Roland VA-3 Service Manual 电路图.pdf

《Roland VA-3 Service Manual 电路图.pdf》由会员分享，可在线阅读，更多相关《Roland VA-3 Service Manual 电路图.pdf（30页珍藏版）》请在收音机爱好者资料库上搜索。

1、BOTTOM CABINET ASSY REMOVAL SCREW: SCREW 2,9 x 13 TCTC PR TROPcod. J2289130 VA-3Jan, 2001 1 SERVICE NOTES Issued by RES First edition SN00045K6018410Printed in Italy (A000) (AD) Copyright 2001 by ROLAND CORPORATION All rights reserved. No parts of this publication may be reproduced in any form whith

2、out the written permission of ROLAND CORPORATION. va-3 v-arranger keyboard TABLE OF CONTENTSPage SPECIFICATIONS1 LOCATION OF CONTROLS2 EXPLODED VIEW (TOP)3 EXPLODED VIEW (BOTTOM)4 KEYBOARD PARTS LIST4 WIRING DIAGRAM5 PARTS LIST6/7 HOW TO SAVE THE ?SYSTEM PROGRAM? OR THE ?TEST PROGRAM? ONTO FLOPPY DI

3、SK.8 HOW TO UPDATE THE ?SYSTEM PROGRAM? OR THE ?TEST PROGRAM? BY FLOPPY DISK.9 TEST MODE9/12 CALIBRATION PROCEDURE TO REPLACE THE PITCH BENDER12 HOW TO ENTER THE TOUCH SCREEN CALIBRATION13 HOW TO INIZIALIZE THE FLASH AREA13 HOW TO LOAD THE 6th LANGUAGE13 BLOCK DIAGRAM14 RIGHT turning leftwards the v

4、alue goes to 0. To exit, press BANK/NUMBER 5. 3. ADC Check Press the BANK/NUMBER 3 button, the display shows: The LCD visualizes the values of the functions you are testing. These values vary from 0 to +127 or to -127. To exit, press BANK/NUMBER 5. ADC TEST Bender (0 +/- 127) Modulation(0 - 127) D.

5、Beam(0 - 127) Expressxxx Sustainxxx Press BANK 5 to exit TEST ENCODER ENCODER ?XXX Press Bank 5 to exit SWITCH TEST XXXX XX XXX * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * XXXX XX XXX Press Bank 8 and Bank5 to exit 10 VA-3Jan, 2001 4.LCD Check Pres

6、s the BANK/ NUMBER 4 button, the display shows: Action: If you press the BANK/NUMBER 1 button, the display will be black If you press the BANK/NUMBER 2 button, the display will be white; If you press the BANK/NUMBER 3 button, the display will be gray; If you press the BANK/NUMBER 4 button, the displ

7、ay will show some numbers (normal) If you press the BANK/NUMBER 6 button, the display will show an image To exit, press BANK/NUMBER 5. 5. LED Check Press the BANK/NUMBER 5 button. The display shows: Action: If you press the BANK/NUMBER 1 button, all LEDs stay on If you press the BANK/NUMBER 2 button

8、, the LEDs turn on in sequence At the end of the sequence they stay all on. To exit, press BANK/5. 6.KEYSCAN Check Press the BANK/NUMBER 6 button, the display shows: When pressing the keyboard keys, you will hear a piano sound, the display visualizes the name of the key, the velocity value and the n

9、umber of the octave used. To exit, press BANK/5. KEY SCAN TEST Key = C Velocity =0/127 Octave =2 Press BANK5 to exit LED TEST Press BANK 1All led ON Press BANK 2SequenceON Press BANK5 to exit LCD TEST Press BANK 1blackTest Press BANK 2whiteTest Press BANK 3grayTest Press BANK 4normalTest Press BANK

10、6imageTest Press BANK5 to exit 7.TOUCH SCREEN Test Note: to carry out this test, a normal pen is required. Press the BANK/NUMBER 7 button, the display shows: Pressing BANK/NUMBER 1 you enter the CALIBRATION test; Pressing BANK/NUMBER 2 you enter the test of the LCD darkest area, excluding the 1 mm f

11、rame indicated by a lighter color. To exit, press BANK/NUMBER 5 ?Touch Screen X, Y test Pressing the BANK/NUMBER 2 button, the display shows: Touch with a pen the upper left corner of the LCD in its darkest area. Pass the pen through the LCD, horizontal- ly first (from the left to the right) and che

12、ck that the X value goes from 0 to 320. Then repeat the operation from downwards to upwards and check that the Y value goes from 0 to 240. The acceptable variation from these values is +/- 5%. To exit, press BANK/NUMBER 5 ?Touch Screen Test Re-selecting BANK/NUMBER 7, the display visualizes: Pressin

13、g BANK/NUMBER 1, the display visualizes: Press BANK/NUMBER 1 to exit the Calibration test; Press BANK/NUMBER 2 to confirm the calibration and carry out the procedure below. Press BANK 5 to exit. TOUCH SCREEN TEST BANK1 - Exit Calibration BANK2 - Confirm Calibration Press BANK5 to exit TOUCH SCREEN T

14、EST BANK1 - Calibrate BANK2 - Touch X, Touch Y test Press BANK5 to exit Touch X - 1 Touch Y - 1 Press BANK5 to exit TOUCH SCREEN TEST BANK1 - calibrate BANK2 - touch X, Touch Y test Press BANK5 to exit VA-3Jan, 2001 11 ?Touch Screen Calibration Pressing BANK/NUMBER 2, the display visualizes: Note:On

15、ce you enter the Calibration test, you can not exit unless you carry out the calibration operations. Calibrate the Touch Screen position this way. To perform this test, a normal pen is required. Touch the lower corner of each slit with the pen, according to the numbering shown in the following pictu

16、re. When the system recognizes the touch, + will change into O. This way, the writing Touch Me will appear to show the correct order, so please follow this indication. During the calibration, do not touch any point except Touch Me. After touching the four points indicated, the calibration ends and t

17、he display will show one of the following wri- tings: When the calibration fails, the following display will appear. In case of failure, you have to carry out the calibration again. Press the BANK/NUMBER 5 button to go to the next test. NG. Calibration Calibration OK Press BANK5 to exit 6MIDI IC27;I

18、C28;IC29 XRST X1 3.5 CNTR DECODER INVERTER BOARD A0,1 MUTE MAIN BOARD 16Mbit BENDER XWP XCS6 XRST XRES 1/4 VGA ALPHA DIAL D0-1 X2 IC19 AN0,1,2 D0-15 A0-21 LS0-3 D0-7 VA INVERTER LED A1-12 ROM 16Mbit TOUCH SCREEN LOGIC DRAM CKOUT KEY IC3 IC47 RX1 IC12 TX2 XCS2 XCS D IC1,IC2 OUT BUFF. D216;D215;Q16;IC

19、10 A0-5,19-21 IC20 VIDEO DRIVER WVOUTAN4 MODULATION XRAS XCS2 CK LCD DECODER XCS SCSIRST XTAL 32Mbit XRP CAS LLCK OSC1 CONTRAST AN3,5 PORT IC16 A1-21 TOUCH SCREEN AN 1,2 RAS,CAS SS0-3 FDC PORT1 Q7 SWITCH IC5 IC21 MASK PHONES X2 24.576MHz 16 M 4 M MASK ROM 4 M RX0 TX0 XPGS4 BOARD CONTROL BOARD LINE O

20、UTPUT LINE INPUT L R L R D/A DATA LOUT ROUT LPF IC11 IC14 IC10 AMPL. IC9 MIXER SUST/EXPR.LCD CONTRAST INPUT REG. IC18 AMPL. VOLUME IC7 BUFFER MUTE CNTRL SQUELCH Q4,Q5,Q9 MUTE IC2 BUFFER Q2,Q3 AN3 POWER AMPLIFIER & POWER SUPPLY POWER INVERTER POWER AMPLIFIER -12V R+ R- L+ L- SPEAKER RSPEAKER L IC2 BO

21、ARD +5V+12VVPWR + -SUPPLY +5V IN OUT KEYBOARD 61 KEYS DC IN 12V 2A ADDRESS BUS CS BUS XRST 10MHz 20MHz DATA BUS D 1 4 2 5 31 4 2 5 3 8 7 3 2 4 5 1 8 7 3 2 4 5 1 3 2 1 JK1 1 2 3 POWER SWITCH 12 20MHz X1 IC6, IC5 A B C D E F G H I L M N O P Q R S T U J K 12345678910121314151617181920212223242526272829

22、30 15 11 VA-3Jan, 2001 RIGHT CONTACT PCB ASSY w/RUBBER ASSY 7624504001 CIRCUIT DIAGRAM (RIGHT CONT. PCB ASSY) CIRCUIT DIAGRAM (LEFT CONT .PCB ASSY) LEFT CONTACT PCB ASSY w/RUBBER ASSY 7624505001 View from component side View from component side A B C D E F G H I L M N O P Q R S T U J K 1234567891012

23、131415161718192021222324252627282930 16 11 VA-3Jan, 2001 MAIN PCB ASSYASSY 7770710001 E View from component side View from solder side A B C D E F G H I L M N O P Q R S T U J K 1234567891012131415161718192021222324252627282930 17 11 VA-3Jan, 2001 CIRCUIT DIAGRAM (MAIN PCB ASSY) CONTROL BUS ADDRESS B

24、US DATA BUS A0.21 D0.15 TO CONTROL B. (CN1) (CN3) AFTER_TOUCH BENDER MODULATION EXPRESSION BALANCE RESET MIDI-A RX MODULATION BENDER DBEAM DBEAM TOUCHY TOUCHX TOUCHX TOUCHY TOUCHY TOUCHX TO LCD CONTR. B. (CN5) MIDI-A TX SDDA1 XRST OUTP1 BCKC 256Fs (CN6) TO JACK B. OUTP1 256Fs SDDA1 BCKC BCKC SDDA1 O

25、UTP1 256FS TXD0 RXD0 SCD0SCD1 SCD2SCD3 SCD4SCD5 SCD6SCD7 LLP LS1 LS2 LS3 SS0 SS1 SS2 SS3 XSCNEN EXENCA EXENCBLS0 TO XPGS4 B. (CN1) D0.7 XRD XWRL YD LP XSCL XD3 XD2 XD1 XD0 XRST XLCD 10MHz A0 DISPONDISP_CON XLCDINT KEYSCAN BLOCK D0.7 A0.1 XRD XWRL XKEY XKEYINT XRST 10MHz D0.15 XDWR XRAS XRD XCASH XCA

26、SL XSTYLE XRST XFLASH XWRL RYBY WPCNT A0.21 SWAP_ROM RYBY2 WPCNT2 XRD XWRL XFDC XFDCINT XDACK1 XDREQ1 XFDCDEND A0.1 D0.7 XIDXINT RDYCNTL FDCCONT XFDCRST BEAM CONTR.BLOCK BCLK XRST DBV SS3 SS2 SS1 SS0 SCD0 LS3LLP LS2 LS1 LS0 XSCNEN LLP SCD0SCD0LS3 LS2 LS1 LS0 SS3 SS2 XIPCINTXIPCINTSS1 SS0 XSCNEN SWAP

27、_ROM MUTE SWAP_ROM XIDXINT XIDXINT TOUCH0 TOUCH1 TOUCH3 TOUCH3 TOUCH0 SCD7 SCD5 SCD2 SCD3 SCD3 SCD1 SCD7 SCD6 SCD6 SCD1 SCD3 SCD5 SCD7 SCD4 SCD4 SCD2 SCD1 SCD6 SCD4 SCD2 SCD5 DISPON EXENCA LP YD XD3 XD1 XD2 XD0 XSCL DISP_CON EXENCA EXENCB EXENCB TOUCH1 A20 A10 A0 XDWR A3 A20 A0.1 A0 A17 A7 A5 A10 A0

28、.1 A6 A6 A0 A13 XRD A2 A19 A18 A3 A8 A14 A20 A15 A4 XWRL XWRL XWRL A8 A3 XRD XRD A16 XDWR A13 A21 XRD A15 A1 A20 A0 XWRL A7 A7 A2 A2 A1 A19 XWRL A18 XRD A16 A5 A13 A19 XWRL A4 A14 XWRL XWRL XRD A2 A1 A12 A0 A10 A17 XRD A17 A15 A8 A21 A6 A3 A9 A16 A5 A21 A18 A9 A11 A12 A11 XWRL A21 A12 XDWR A4 A0.21

29、A19 A4 XRD XWRL A11 A9 A5 A14 A1 D12 D1 D6 D0 D3 D3 D7 D9 D4 D1 D2 D5 D0.7 D15 D15 D14 D8 D1 D3 D0 D1 D3 D13 D2 D0.7 D0 D0 D14 D2 D9 D11 D0.15 D11 D15 D11 D7 D4 D8 D4 D5 D0 D12 D1 D1 D4 D8 D0 D12 D6 D2 D10 D5 D13 D7 D6 D10 D5 D9 D13 D14 D2 D10 D3 D7 D6 XFLASH XPORT XFDC XKEY XWRH XPORT XLCD XFLASH X

30、FLASH XFDC XKEY XFDC XPORT XKEY XWRH XWRH XLCD XWRH XLCD D4 D5 D6 D7 10MHz 10MHz 10MHz MUTE SCD7 LSSC7 TOUCH2 TOUCH2 YD LP XSCL XD0 XD1 XD2 XD3 DISP_CON TXD1 TXD1 TXD1 LSSC7 BENDER MOD AN3 RYBY2 XLCDINT XGWAIT FDCCONT XFDCINT XFDCINT RXD1 XGINT XDREQ1 XRAS XRST AN5 XDACK1 FDCCONT XSTYLEXSTYLE XLCDIN

31、T WVOUT RYBY XFDCDEND 20MHz RYBY AN4 RDYCNTL XLCDINT XRST RDYCNTL XIDEINT AN4 XCASL XRAS XSTYLE AN1 RYBY2 WPCNT2 AN3 XRST XRST XFDCDEND AN7 RXD1 XRST RXD1 WVOUT XLCDINT XKEYINT XCASH XFDCINT XRST XRAS AN6 XIDEINT XRST XDREQ1 AN5 WPCNT XCASH 20MHz AN0 XCS4 RXD0 TXD0 AN4 XXP6INT XCASL XCS2 WVOUT XCS4

32、RXD0 AN6 XRST XCS4 XCS2 XFDCRST RDYCNTL XXP6INT XFDCRST RYBY XCASL RYBY2 XSTYLE XCS2 XDREQ1 WPCNT AN0 WPCNT2 WPCNT2 XCASH XGWAIT XFDCDEND XDACK1 AN2 XDACK1 FDCCONT XGWAIT XGINT XRST AN1 XRST XCASL XCASH XRST RXD0 XGINT TXD0 XFDCRST AN2 XRAS XKEYINT AN3 AN7 TXD0 XKEYINT WPCNT BENDER MOD D D D D D D R

33、EF REF REF REF REF REFREFREFREF D D D D D D D REF D D D D D D D D D 5VD 5VD5VD 5VD 5VD 5VREF 5VREF 5VREF 5VREF 5VREF 5VD 5VD 5VD 5VD 5VD 5VD 5VD 5VD 5VD5VD 5VD 5VD 5VD 5VD 5VD DD 5VD 5VD 5VD 5VD D D REF 5VD D 5VD D D D D D REF D D A 5VD -12V+12V 5VD D +12V-12V D 5VD 5VD 5VD5VD 5VD 5VD D D 5VD REF 5V

34、REF REF 5VREF REF D REF D D D 5VREF D D D D -12V+12V REF REF REF 5VREF 5VREF C2 10uF16s D3 DA204K 21 3 D5 DA204K 21 3 D7 DA204K 21 3 D8 DA204K 21 3 C9 100nFs C10 100nFs C11 100nFs C12 100nFs C13 100nFs C20 22pFs C21 22pFs C22 22pFs C23 22pFs C24 22pFs C25 22pFs C26 22pFs C27 22pFs C28 22pFs C30 22pF

35、s C31 22pFs C32 22pFs C33 22pFs C34 22pFs C35 22pFs C36 22pFs C37 22pFs R510Ks R610Ks C38 10uF16s C39 100nFs C40 100nFs C41 100nFs C42 100nFs RA3 4X10Ks 45 6 7 8 3 2 1 R13100s R16100s R17100s C46 NIU C47 NIU C49 NIU C50 NIU RA6 8X10Ks 4 5 6 7 8 9 3 2 1 RA7 8X10Ks 4 5 6 7 8 9 3 2 1 RA8 8X10Ks 4 5 6 7

36、 8 9 3 2 1 RA9 8X10Ks 4 5 6 7 8 9 3 2 1 RA10 8X10Ks 4 5 6 7 8 9 3 2 1 RA11 4X10Ks 45 6 7 8 3 2 1 TP TP1 TP L4EXCCL4532U1 L5EXCCL4532U1 L6EXCCL4532U1 L7EXCCL4532U1 L8EXCCL4532U1 L9 EXCCL4532U1 IC5 M51953A 2 3 5 4 1 NC GND RES CAP VCC R51 47sR52 47s R54100s R55 0s SW1 NIU C82 100nFs RA184X47s 18 27 36

37、 45 RA194X47s 18 27 36 45 RA204X47s 18 27 36 45 RA214X47s 18 27 36 45 RA224X47s 18 27 36 45 RA234X47s 18 27 36 45 RA244X47s 18 27 36 45 RA254X47s 18 27 36 45 RA264X47s 18 27 36 45 TP TP5 TP L28 BK2125HM102 L29BK2125HM102 L30BK2125HM102 L31BK2125HM102 L32BK2125HM102 L33BK2125HM102 L34BK2125HM102 L35B

38、K2125HM102 L36BK2125HM102 L37BK2125HM102 L38BK2125HM102 R94 0s R950s R34NIU R35NIU R36NIU C1 33uF25s R3110Ks R3210Ks R3310Ks R7 47s R56100s RA32 4X10Ks 45 6 7 8 3 2 1 TP TP11 TP RA17 4X47s 18 27 36 45 R4 10Ks RA15 8X10Ks 4 5 6 7 8 9 3 2 1 RA4 4X10Ks 45 6 7 8 3 2 1 C93 33uF25s C8 100nFs C7 100nFs C5

39、100nFs C4 100nFs C18 12pFs C19 12pFs R501Ks TP TP2 niu TP TP3 niu TP TP4 niu TP TP7 niu IC8 74HC74 FLAT 367060074 2 3 1 4 12 11 13 10 5 6 9 8 14 7 D1 CLK1 CLR1 PR1 D2 CLK2 CLR2 PR2 Q1 Q1 Q2 Q2 VCC GND C75 220nF 16V 5% RA5 4X10Ks 45 6 7 8 3 2 1 RA35 4X10Ks 45 6 7 8 3 2 1 R41 4K7s NIU RA14 4X10Ks 45 6

40、 7 8 3 2 1 C84 100nFs L18 EXCCL4532U1 R151100s R153100s R154100s L51 EXCCL4532U1 IC40 74HC273 32 45 76 89 1312 1415 1716 1819 11 110 20 D1Q1 D2Q2 D3Q3 D4Q4 D5Q5 D6Q6 D7Q7 D8Q8 CLK CLRGND VCC L26 BK2125HM102 L23BK2125HM102 L25BK2125HM102 L24 BK2125HM102 L21BK2125HM102 L27 BK2125HM102 L22BK2125HM102 R

41、A45 4X100s 18 27 36 45 IC3 M60205-0601FP 2 29 52 79 1 28 33 40 53 80 6 4 5 25 66 65 64 63 62 61 60 59 3 67 69 68 74 73 72 71 78 77 76 75 70 81 89 88 87 86 85 84 83 82 90 91 92 100 99 98 97 96 95 94 93 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 34 35 36 31 32 37 41 39 38 24 55 54 51 50 49 48 47

42、46 45 44 43 42 58 57 56 27 30 26 VDD VDD VDD VDD VSS VSS VSS VSS VSS VSS MIDI IN WRHO WRLO WAIT IN PORT7 PORT6 PORT5 PORT4 PORT3 PORT2 PORT1 PORT0 PWM 2 PWM 1 ENC B ENC A SS3 SS2 SS1 SS0 LS3 LS2 LS1 LS0 SSEN LLCK PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 RS/CD R/W LE/RD LCD 7 LCD 6 LCD 5 LCD 4 LCD 3 LCD 2 LCD

43、 1 LCD 0 A21 A20 A19 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0 XRD XWRH XWRL XDREQ XDACK WAIT OUT CS6 CS4 CS2 XIREQ ECS11 ECS10 ECS9 ECS8 ECS7 ECS6 ECS5 ECS4 ECS3 ECS2 ECS1 ECS0 EXTINT2 EXTINT1 EXTINT0 CLK IN CLK OUT RESET CN28 52411-0501 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 3

44、0 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 R14100s IC6D 74HC00 12 13 11 IC6B 74HC00 4 5 6 IC6E 74HC00 147 R155 4K7s TP TP1

45、9 TP IC43CTC7W34FU 35 IC44ATC7W34FU 17 IC44BTC7W34FU 62 IC43D TC7W34FU 84 IC44D TC7W34FU 84 L53 EXCCL4532U1 IC43A TC7W34FU 17 IC43B TC7W34FU 62 IC44C TC7W34FU 35 C186 100nFs C193 100nFs C202 33uF25s FL2 ELKS471FA 2 13 FL3 ELKS471FA 2 13 IC39 TC7S32F 1 2 4 53 IC6A 74HC00 1 2 3 C220 22pFs NIU C221 22p

46、Fs NIU C223 22pFs NIU C224 22pFs NIU D2 DA204K 21 3 RA164X10Ks 45 6 7 8 3 2 1 R179 100s R181 100s R182 100s RA464X10Ks 45 6 7 8 3 2 1 IC6C 74HC00 9 10 8 R202 NIU R108 10Ks IC7 TC7S32F 1 2 4 53 RA1 8X10Ks 4 5 6 7 8 9 3 2 1 C43 47pFs C71 100uF16s L1 NIU C70 100uF25 C69 100uF25 CN9 AMPC1-2720P 3 4 5 6

47、7 8 2 1 9 20 19 18 17 16 15 14 13 12 1110 C201 47uF16s C192 100nFs CN4 AMPC1-2714P 3 4 5 6 7 2 1 8 9 10 11 12 13 14 CN24 AMPC1-2720P 3 4 5 6 7 8 2 1 9 20 19 18 17 16 15 14 13 12 1110 R152100s C188 47uF16s RA12 4X100s 18 27 36 45 RA13 4X100s 18 27 36 45 R112 10Ks C29 22pFs R8 10Ks RA2 8X10Ks 4 5 6 7

48、8 9 3 2 1 CN29 AMPC1-2716P 3 4 5 6 7 8 2 1 9 10 11 12 13 14 15 16 C232 330uF6_3s C231 100nFs CN1 AMPC1-2720P 3 4 5 6 7 8 2 1 9 20 19 18 17 16 15 14 13 12 1110 R150s R203 100s D4 DA204K 21 3 X1 20MHz MA-406 C76 10nFs TP TP20 R3 470s TP TP21 C3 10nFs R11510Ks C77 10nFs IC4 HD6437034AE47F 77 15 43 70 7

49、5 83 3 12 22 31 40 52 61 72 96 48 102 101 100 98 95 94 93 88 87 107 108 109 110 47 46 45 44 42 41 39 38 37 36 35 34 33 32 30 29 28 27 26 25 24 23 21 20 19 18 17 16 14 13 11 10 9 8 7 6 5 4 76 97 92 90 89 86 91 2 1 112 111 69 66 67 68 65 64 106 79 73 74 71 78 84 99 56 55 82 81 54 53 80 51 50 49 62 60 59 58 57 63 85 105 104 103 VPP VCC VCC VCC VCC VCC VSS VSS VSS VSS VSS VSS VSS VSS VSS CS0 PB4/TP4/TIOCA4 PB3/TP3/TIOCB3 PB2/TP2/TIOCA3 PB1/TP1/TIOCB2 PC7/AN7 PC6/AN6 PC5/AN5 PC1/AN1 PC0/AN0 PB8/TP8/RXD0 PB9/TP9/TXD0 PB10/TP10/RXD1 PB11/TP11/TXD1 A21 A20 A19 A