Analog Devices 82-0000603-01 manuale d’uso

ADSP-21535 EZ-KIT LITE  Evaluation System Manual Second Edition, May 2002 Part Number 82-000603-01 Analog Devices, Inc. Digital Signal Processing Division One Technology Way Norwood, MA 02062-9106 a[...]

Limited Warranty The EZ-KIT Lite evaluation system is warr anted against defects in materials and workmanship for a period of one year from the date of purchase from Analog Devices or from an authorized dealer. Disclaimer Analog Devices, Inc. reserves the right to change this product without prior notice. Information furnished by Analog Devices is [...]

Regulatory Compliance The ADSP-21535 EZ-KIT Lite evaluation syst em has been certified to comply with the essential requirements of the Europ ean EMC directive 89/336/EEC (inclusive 93/68/EEC) and therefore carries the “ CE ” mark. The ADSP-21535 EZ-KIT Lite evaluation sy stem had been appended to the Technical Construction File referenced ‘ [...]

TABLE OF CONTENTS LIST OF TABLES ............................................................................................................. vi LIST OF FIGURES ........................................................................................................... vi 1 INTRODUCTION ..............................................................[...]

4.4.1 Programmable Flag LEDs ( LED1, LED2, LED3, LED4) ....................... 4-9 4.4.2 USB Monitor LED (LED5) ...................................................................... 4-9 4.4.3 Power LED (LED6) .................................................................................. 4-9 4.4.4 Reset LEDs (LED7, LED8) .......................[...]

LIST OF TABLES Table 1-1: Related DSP Documents ................................................................................ 1-5 Table 1-2: Related VisualDSP++ Documents ................................................................. 1-5 Table 2-1: Minimum PC Configuration.......................................................................[...]

1 INTRODUCTION Thank you for purchasing the ADSP-21535 EZ-KIT Lite  evaluation system. The evaluation board is designed to be used in conjunction with the VisualDSP++  development environm ent to test the c apabilities of the ADSP- 21535 digital signal processor (DSP). The VisualDSP++ development environment gives you the ability to perform a[...]

• Analog Devices AD1885 48 kHz AC’97 SoundMAX  Codec o Jumper-Selectable Line-In or Mic-In 3.5 mm Stereo Jack o Line-Out 3.5 mm Stereo Jack • SDRAM o 4 M x 32-bit • Flash Memory o 272 K x 16 • Interface Connectors o 14-Pin Emulator Connector for JTAG Interface o SPORT0 Connector o FlashLINK TM Connector (for flash programming) o Expans[...]

You may also obtain additional inform ation about Analog Devices and its products in any of the following ways: • FAX questions or requests for information to (781) 461-3010. • Access the Computer Products Division F ile Transfer Protocol (FTP) site at 137.71.23.21 or ftp://ftp.analog.com . 1.2 For Technical or Customer Support You can reach ou[...]

DSP programmers who are unfamiliar w ith Analog Devices Blackfin DSPs can use this manual in conjunction with the ADSP-21535 DSP Hardware Reference and the ADSP-21535 DSP Instruction Set , which describe the DSP architecture and instruction set. DSP programm ers who are unfamiliar with VisualDSP++ should refer to the VisualDSP++ Help menu and the V[...]

To view help on additional ADSP-21535 EZ-KIT Lite features, go to the windows task bar and select Star tProgramsVisualDSPEZ-KIT Help. The documents in the following tables can be found through onlin e Help or in the Docs folder of your VisualDSP++ installation. For more documentation, please go to http://www.analog.com/tec hnology/dsp/library.ht[...]

2 GETTING ST ARTED 2.1 Overview This chapter provides the information you n eed to begin using ADSP-21535 EZ-KIT Lite evaluation system. For correct operation insta ll the software and hardwa re in the order presented in section 2.4 . This chapter has the following sections: • Contents of your EZ-KIT Lite Package (Section 2.2 ) Provides a list of[...]

The EZ-KIT Lite evalua tion system contains ES D (electrostatic discharge) sensitive devices . Electrostatic c harges readily accumulate on the human b ody and equipm ent and can discharge without detection. Permanent damage may occur on devices subjected to high-energy discharges. Proper ESD precautions are recomm ended to avoid performance degrad[...]

2.4.1 Installing the VisualDSP++ Software This EZ-KIT Lite comes with the latest version of VisualDSP++ f or the Blackfin DSP family. You must install this software before installing the EZ-KIT Lite debug software. Insert the VisualDSP++ CD-ROM into th e CD-ROM drive. If Auto Run is enabled on your PC, the home screen of the VisualDSP++ install wiz[...]

2.4.4 Setting Up the EZ-KIT Lite Hardw are The EZ-KIT Lite evalua tion system contains ES D (electrostatic discharge) sensitive devices . Electrostatic c harges readily accumulate on the human b ody and equipm ent and can discharge without detection. Permanent damage may occur on devices subjected to high-energy discharges. Proper ESD precautions a[...]

3. Plug the provided power supply into P10 on the EZ-KIT Lite board. Visually verify that the green power LED (LED6) is on. Also verify that the two red reset LEDs (LED7 and LED 8) go on for a moment and then go off. 4. Connect the USB cable to an available full speed USB Port and to P7 on the ADSP-21535 EZ-KIT Lite board. 2.4.5 Installing the EZ-K[...]

2. Click Next . 3. Select Search for the best driver for your device as shown in Figure 2-3 . Figure 2-3: Search for the driver 4. Click Next . 5. Select CD-ROM drive as shown in Figure 2-4 . Figure 2-4: Search the CD-ROM 6. Click Next . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-6[...]

Windows 98 will locate the W mUSBEz.inf f ile that is on the CD-ROM as shown in Figure 2-5 . Figure 2-5: The driver is located 7. Click Next . The Coping Files dialog box appears ( Figure 2-6). Figure 2-6: Search for .sys File Dialog Box 8. Click Browse . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-7[...]

Figure 2-7 will appear. Figure 2-7: Open the .sys File 9. In Drives select your CD-ROM drive. 10. Click OK . Figure 2-8 will appear. Figure 2-8: Copying Files 11. Click OK . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-8[...]

The driver installation is now complete as shown in Figure 2-9 . Figure 2-9: Finish the Software Installation 12. Click Finish to exit the wizard. Verify the installation by following the instructio ns in section 2.4.6 . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-9[...]

2.4.5.2 Windows 2000 USB Driver Installation Before using the ADSP-21535 EZ-KIT Lite for the first time, the Windows 2000 USB driver must first be installed. To install the USB Driver: 1. Insert the EZ-KIT Lite CD-R OM into the CD-ROM drive. The connection of the device to th e USB port will activate the W indows 2000 “Found New Hardware Wizard?[...]

3. Select Search for a suitable driver for my device as shown in Figure 2-11 . Figure 2-11: Search for a Suitable Driver 4. Click Next . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-11[...]

5. Ensure that CD-ROM drives is selected as shown in Figure 2-12 . Figure 2-12: Locate Driver Files 6. Click Next . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-12[...]

Figure 2-13 appears. Figure 2-13: Driver File Search Results 7. Click Next . ADSP-21535 EZ-KIT Lite Evaluation System Manual 2-13[...]

Windows 2000 will autom atically instal l the ADSP-21535 EZ-KIT Lite driver. The driver installation is now complete as shown in Figure 2-14 . Figure 2-14: Completing Driver Installation Dialog Box 8. Click Finish to exit the wizard. Verify the installation by following the instructio ns in section 2.4.6 . 2.4.6 Verif ying Driver Installation Befor[...]

2.4.7 Starting VisualDSP++ To start debugging, set up a session in VisualDSP++. 1. Verify that the yellow USB monitor LED (LED5, located near the USB connector) is lit. This signifies that the board is communicating properly with the host PC, and is ready to run VisualDSP++. 2. Hold down the Control (CTRL) key. 3. Select the Start button on the Win[...]

3 USING THE EZ-KIT LITE 3.1 Overview This chapter provides specific information to assist you with developing programs for the ADSP-21535 EZ-KIT Lite board. This information appears in the following sections: • EZ-KIT Lite License Restrictions (Section 3.2 ) Describes the restrictions of the VisualDSP++ license shipped with the EZ-KIT Lite. • M[...]

3.2 EZ-KIT Lite License Restrictions The license shipped with the EZ-KIT Lite imposes the following restrictions: • Internal Memory space is limited to 176 KB of the ADSP-21535 internal memory space • No connections to Simulator or Emulator sessions are allowed. • Only one EZ-KIT Lite can be connect ed to the host PC and debugged at a time 3.[...]

3.4 Using the SDRAM Interface In order to use the 4M x 32 bits (16 MB) of SDRAM memory, the three SDRAM control registers must be initialized. The following tab le shows the standard configuration for these registers when using the EZ-KIT Lite in the default configuration. These numbers were de rived using the M48LC4M16ATG-75 with a system clock fr[...]

Boot Flash Array Config Main F lash Array Empty Empty 0x2002 0000 0x2001 0000 0x2000 0000 0x2001 00FF 0x2000 8000 0x200A 0000 Figure 3-1: Flash Memory Map Use PSDsoft Express TM to modify the default settings for the flash memory, the DSM project must be modified and th e flash must be reprogramm ed using FlashLINK TM . The default project files ca[...]

3.6 Using the Programmable Flag Pins The ADSP-21535 has 16 asynchronous Program mable Flag (PF) I/O pins. During reset PF0-PF9 function as inputs to th e internal PLL of the DSP. They are not valid until 120uS after reset. Table 3-3 describes how the PF s are used on the EZ-KIT Lite. After a DSP reset, all of the PF pins are in itialized as inputs.[...]

3.6.1 Using the Power Management Features PF14-PF12 allow you to program the core vo ltage of the DSP. The default core voltage is 1.5V. Table 3-4 gives the value of the core voltage corresponding to the state of these PFs. When lowering the core voltage of the D SP, the frequency of the DSP must be taken into consideration. As you lower the core v[...]

4 EZ-KIT LITE HARDW ARE REFERENCE 4.1 Overview This chapter describes the hardware design of the ADSP-21535 EZ-KIT Lite board. The following topics are covered: • System Architecture (Section 4.2 ) Describes the configuration of the DSP as well as a description of how all of the components on the bo ard interface with the DSP. • Jumper and DIP [...]

4.2 System Architecture The EZ-KIT Lite has been designed to demonstrate the capabilitie s of the ADSP- 21535 DSP. This section describes the DSP’s configuration on the EZ-KIT Lite board. A DSP-21535 DSP (U1) SPORT0 Connector AD1885 Codec (U7) St ereo LI NEIN/ MIC an d LINEOUT Connectors SRAM USB Connector EZ USB FX JTAG Header Expansion Connec t[...]

4.2.1 External Bus Interface The External Bus Interface Unit (EBIU) is connected to 4M x 32 bits of SDRAM (16 MB). This memory is connected to the synchronous memory select 0 (~SMS0) pin. Refer to section 3.4 for information about configuring the SDRAM. The EBIU is also connected to 272K x 16 bits of flash memory. This memory is connected to the as[...]

4.2.3 Expansion Interface The expansion interface consis ts of the footprints for 3 connectors. The following table shows the interfaces each connector provid es. For the exact pin-out of these connectors refer to APPENDIX B: SCHEMATIC . Analog Devices does not populate these connectors or provide any ad ditional support for this interface. The mec[...]

4.3 Jumper and DIP Switch Settings This section describes the function of all the jumpers and DIP switches. The following figure shows the location of all the jumpers and DIP switches. Figure 4-2: Jumper Locations 4.3.1 Audio Input Select Jumper (JP1) The audio input jack (P5) can be connect ed to the MIC1 or the LINEIN input channels of the AD1885[...]

Stereo LINE_IN (DEFAULT) Mono MIC1 MIC JP1 LINE 2 1 6 5 MIC JP1 LINE 2 1 6 5 Figure 4-3: Audio Input Jumper Settings (JP1) 4.3.2 Audio Cod ec Disable Jumper (JP2) Placing a jumper between pins 1 and 2 of JP2 holds the AD1885 in reset, preventing it from driving si gnals to the serial port. When a jum per is between pins 2 and 3 of JP2, the AD1885 i[...]

During reset, the function of these p ins is to setup the PLL. At this time, these signals are attached to the PLL setup switch (SW2) and determ ine the core and external clock speeds of the DSP. Appr oximately 120uS after reset has been de- asserted these pins are no longer a ttached to SW2, but function as PFs. The following table shows the switc[...]

4.4 LEDs and Push Buttons This section describes the function of all the LEDs and push buttons. Figure 4-5 shows the location of all the LEDs and push buttons. Figure 4-5: LED and Push Button Locations ADSP-21535 EZ-KIT Lite Evaluation System Manual 4-8[...]

4.4.1 Programmable Flag LEDs (LED1, LED2, LED3, LED4) Four LEDs are connected to four of the DSP’s Progr ammable Flag (PF) pins, PF0-3. These LEDs are active HIGH and are lit by an output of “1” from the DSP. Refer to section 3.6 for m ore information about using of the PFs when programming the DSP. Table 4-4: Programmable Flag LEDs LED Refer[...]

4.4.6 Programmable Flag Push Bu ttons (SW4, SW5, SW6, SW7) Four push buttons are provided for general-purpose user input. SW4-7 connect to the DSP’s Programmable Flag (PF) pins, PF4-7. The push buttons are active high and when pressed send a high (1) to the DSP. Refer to section 3.6 for more information about the use of the PFs when programming t[...]

4.5 Connectors This section describes the function of th e connectors and gives information about mating connectors. The following figure s hows the locations of the connectors. Figure 4-6: Connector Locations ADSP-21535 EZ-KIT Lite Evaluation System Manual 4-11[...]

4.5.1 Expansion Interface (P1, P2, P3) Three board-to-board connector footprints provide the signals for most of the DSP peripheral interfaces. Analog Devices does not populate these connectors or provide any additional support for this interface. See section 4.2.3 , for m ore information on the Expansion Interface. Contact Samtec for the availabil[...]

4.5.4 USB (P7) The USB connector is a standard Type B US B receptacle. This connector is used to debug the DSP, and is not connected to the DSP’s USB interface. Part Description Manufacturer Part Number Mill-Max 897-30-004-90-000 Type B USB receptacle (P7) Digi-Key ED90003-ND Mating Connector Assmann AK672-5 USB cable (provided with kit) Digi-Key[...]

4.5.6 SPORT0 (P9) SPORT0 is connected to a 20- pin connector. The pinout fo r this connector can be found in APPENDIX B: SCHEMATIC . Contact AMP for pric ing and availability on these connectors. Part Description Manufacturer Part Number 20 position AMPMODU system 50 receptacle (P9) AMP 104069-1 Mating Connectors 20 position AMPMODU system 20 conne[...]

4.6.1 Pow er Supply The power connector supplies DC pow er to the EZ-KIT Lite board. Table 4-6 shows the power connector pinout. Table 4-6: Power Connector Terminal Connection Center pin +7.5 VDC@2amps Outer Ring GND 4.6.2 Board Cur rent Measurements The ADSP-21535 EZ-KIT Lite board provides eight zero-ohm resistors that may be removed to measure c[...]

4.6.3 Mechanical Dimensions The following figure shows the location of th e mounting holes as well as the PIN1 of each of the expansion connectors. P1 P3 P2 0.000 0.000 0.250 0.250 1.125 3.875 4.750 5.000 0.625 1.300 3.750 2.500 3.250 3.600 6.375 6.750 1.400 6.200 7.000 Figure 4-7: Mechanical Drawing ADSP-21535 EZ-KIT Lite Evaluation System Manual [...]

APPENDIX A: BILL OF MA TERIALS REF QTY. Description Ref. Des Manufacturer Part Number 2 3 74LVC14A SOIC14 HEX-INVER-SCHMITT-TRIGGER U9-10, U19 TI 74LVC14AD 3 1 IDT74FCT3244APY SSOP20 3.3V-OCTAL-BUFFER U24 IDT IDT74FCT3244APY 4 1 24.576MHZ SMT OSC005 CRYSTAL Y2 EPSON MA505 24.576M-C2 5 1 CY7C64603-128 PQFP128 USB-TX/RX MICROCONTROLLER U11 CYPRESS CY[...]

24 2 ADP3338AKC-33 SOT-223 3.3V-1.0AMP REGULATOR VR1-2 ANALOG ADP3338AKC-3.3 25 1 ADP3339AKC-5 SOT-223 5V-1.5A REGULATOR VR4 ANALOG ADP3339AKC-5-REEL 26 1 ADP3088 MSOP8 500MA-BUCK-REGULATOR VR5 ADI ADP3088ARM-REEL 27 1 ADSP-21535PKB-300 PBGA260 308KBYTES-BLACKFIN U1 28 5 RUBBER FEET BLACK MH1-5 MOUSER 517-SJ-5018BK 29 1 PWR 2.5MM_JACK CO N005 RA P1[...]

49 1 1.5K 100MW 5% 805 R43 AVX CR21-1501F-T 50 1 22uF 16V 10% D TANT CT1 DIG01 PCT3226CT-ND 51 3 2.21K 1/8W 1% 1206 R30, R35, R40 AVX CR32-2211F-T 52 4 10uF 16V 10% B TANT CT4, CT19-21 AVX TAJB106K016R 53 1 1A HSM160J DO-214AA SCHOTTKY D4 MICRO-SEMI HSM160J 54 5 100 100MW 5% 805 R67, R82, R85-86, R89 AVX CR21-101J-T 55 1 1000 100MHZ 1.5A FER002 0.0[...]

75 2 39PF 50V 5% 805 NPO C1-C2 PANASONIC ECJ-2VC1H390J 76 5 10K 100MW 2% RNET16 BUSSED RN1-5 CTS 767-161-103G 77 1 1K 1/8W 5% 1206 R38 AVX CR32-102J-T 78 6 10K 1/8W 5% 1206 R23-27, R33 DALE CRCW1206-1002FRT1 79 1 100K 1/8W 5% 1206 R109 CR1206-1003FTR1 80 1 20.0K 1/8W 1% 1206 R104 81 3 22 1/8W 5% 1206 R36,R39, R126 82 7 270 1/8W 5% 1206 R69-73, R75-[...]

APPENDIX B: SCHEMA TIC ADSP-21535 EZ-KIT Lite Evaluation System Manual E[...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of ADSP-21535 EZ-KIT LITE 1 10 5-3-2002_12:31 ADSP-21535 EZ-KIT LITE - TITLE[...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of R1 R2 R3 R4 R5 R6 R7 R8 COM1 COM2 R1 R2 R3 R4 R5 R6 R7 R8 COM1 COM2 R1 R2 R3 R4 R5 R6 R7 R8 COM1 COM2 3V COM R10 R11 R12 R13 R14 R15 R2 R3 R4 R5 R6 [...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of 3V 3V A11 BA0 A2 A3 A4 A5 A6 A7 A8 A9 CKE CLK DQ0 DQ1 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQMH DQML CAS CS RAS WE BA1 A10 [...]

AGND AGND A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of AGND AGND AGND AGND AGND AGND AGND AGND AGND JUMPER SHORTING 3V JUMPER SHORTING JUMPER SHORTING A5V AFILT1 AFILT2 AUX_L AUX_R AVDD1 AVDD2 [...]

1 2 ON 3 A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of COM R10 R11 R12 R13 R14 R15 R2 R3 R4 R5 R6 R7 R8 R9 R1 3V 1 2 4 5 6 7 ON 3 8 9 10 11 12 I0A I0B I0C I0D I1A I1B I1C I1D S YA YB YC YD E I0A[...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of 3V 3V 3V 3V 3V 3V 3V 3V 3V 5V 3V PFI RESET MR PFO RESET 1A1 1A2 1A3 1A4 2A2 2A3 2A4 1Y1 1Y2 1Y3 1Y4 2Y1 2Y2 2A1 2Y4 2Y3 OE1 OE2 POWER NMI PF3 PF2 PF[...]

3V A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of 5V 3V DSP JTAG HEADER SPORT0 5-3-2002_12:31 87 85 83 81 77 75 73 69 67 65 63 61 59 57 1 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 25 26 27 2[...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of 1206 IN1 IN2 GND1 COMP FB GND2 DRV SW 1206 WAIT 100uS FOR VOLTAGE TO SETTLE 0 0 1 0 1 0 1 1 1 1 1 0 1 0 1 1 0 0 0 1 1 0 0 0 1.6V 1.4V 1.3V 1.2V 1.1V[...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of 5V FB GND INPUT SD OUTPUT ERR 5V 5V 5V SHGND CHOKE_COIL INPUT GND OUTPUT 3V AGND 5V A5V SHGND SHGND INPUT GND OUTPUT INPUT GND OUTPUT 5-3-2002_12:31[...]

A0162-2000 5/11/02 1.4 4 3 2 1 A B C D 20 Cotton Road Nashua, NH 03063 Checked Engineering A B C D 4 3 2 1 Drawn ANALOG DEVICES Date PH: 1-800-ANALOGD Date Title Board No. Size Rev C Approvals Sheet of 3V 3V AGND 3V 3V 3V 3V 3V 3V 3V 3V 3V 3V 3V 3V 3V 3V A5V 3V ADSP-21535 INTERNAL (U1) ADSP-21535 EXTERNAL (U1) ADM708SAR (U23) CYC64603-128 (U11) 24L[...]

INDEX A architecture ......................................... 4-2 audio ................................................. 4-12 B boot mode select ................................ 4-6 C connectors ........................................ 4-11 P1,P2,P3 ................................ 4-3, 4-12 P10 ............................................... 4-1[...]

S SDRAM ...................................... 3-2, 3-3 SPORT0 .................................... 4-3, 4-14 audio codec disable ........................ 4-6 switches .............................................. 4-8 default settings ............................... 2-4 SW1................................................ 4-6 SW2...................[...]