Yamaha Clavinova CLP-970, Service Manual

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CLP-970/CLP-970M/CLP-970C/CLP-970A/CLP-970AM/CLP-970AC
TC160G22AF-1252 (XU135A00) MI2 (MPU Interface 2)
DM: IC003
PIN
NAME I/O FUNCTION
PIN
NAME I/O FUNCTION
NO. NO.
1 TEST I Test pin 41 SD0 I/O
2 VDD Power supply 42 SD1 I/O
3 XIN I Clock 43 SD2 I/O
4 XOUT O Clock 44 SD3 I/O
5 VSS Ground 45 SD4 I/O
6 /RESET I Reset 46 SD5 I/O
7 /MCS I Main CPU chip select 47 SD6 I/O
8 /MRD I Main CPU read 48 SD7 I/O
9 /MWR I Main CPU write 49 SD8 I/O Slave CPU data 0-15
10 /MIRQ O Main CPU interrupt request 50 SD9 I/O
11 MA0 I Main CPU address 0 51 SD10 I/O
12 VSS Ground 52 VSS (Ground)
13 MA1 I 53 SD11 I/O
14 MA2 I
Main CPU address 1-4
54 SD12 I/O
15 MA3 I 55 SD13 I/O
16 MA4 I 56 SD14 I/O
17 MD0 I/O 57 SD15 I/O
18 MD1 I/O 58 /TXREQ I 4-bit CPU send data request
19 MD2 I/O 59 RRDY I 4-bit CPU ready
21 VSS (Ground) 61 SD I/O 4-bit CPU data
22 MD4 I/O 62 DR1 O KBS interface drive (pedal)
23 MD5 I/O 63 DR2 O KBS interface drive (lower keyboard)
24 MD6 I/O 64 DR3 O KBS interface drive (upper keyboard)
25 MD7 I/O 65 KD1 I Keyboard data scan (pedal)
26 MD8 I/O Main CPU data 0-15 66 KD2 I Keyboard data scan (lower keyboard)
27 MD9 I/O 67 KD3 I Keyboard data scan (upper keyboard)
28 MD10 I/O 68 KBSCLK O KBS clock
29 MD11 I/O 69 XCLK1 I
30 MD12 I/O 70 XCLK2 I KSN interface clock
31 MD13 I/O 71 XCLK3 I
32 MD14 I/O 72 KSEL I KBS/KSN select
33 VDD (Power supply) 73 VDD Power supply
34 MD15 I/O 74 ADSEL0 O
35 /SCS I Slave CPU chip select 75 ADSEL1 O FSV interface CH select
36 /SRD I Slave CPU read 76 ADSEL2 O
37 /SWR I Slave CPU write 77 ADMCLK O FSV A/D system clock (8 MHz)
38 /SIRQ O Slave CPU interrupt request 78 ADL/R O FSV A/D L/R clock(31.25 kHz)
39 SA0 I Slave CPU address 0 79 ADSCLK O FSV A/D bit clock(1 MHz)
40 VSS Ground 80 ADDATA I FSV A/D data
YMZ702-D (XR632A00) KSN2 (Key Scanner)
AEXL88-L: KSN2
PIN
NAME I/O FUNCTION
PIN
NAME I/O FUNCTION
NO. NO.
1 BK5 O 21 GND Ground
2 BK4 O 22 VDD Power supply
3 BK3 O
Key block (open drein)
23 SO O Serial data
4 BK2 O 24 ACK I Acknowledge/mode select
5 BK1 O 25 XCK I Clock for serial data
6 BK0 O 26 /IC I Initial clear
7 MK15 I 27 TST1 I Test mode
8 MK14 I 28 TST2 I (L,L: normal mode, others: test)
9 MK13 I
First make contact
29 XCKINH I Inhibit of serial clock
10 MK12 I 30 BK14 O
11 MK11 I 31 BK13 O
12 MK10 I 32 BK12 O
13 MK05 I 33 BK11 O
14 MK04 I 34 BK10 O Key block (open drein)
15 MK03 I
Second make contact
35 BK9 O
16 MK02 I 36 BK8 O
17 MK01 I 37 BK7 O
18 MK00 I 38 BK6 O
19 XIN I Crystal osc. input (4 MHz) 39 GND Ground
20 XOUT O Crystal osc. output (4 MHz) 40 VDD Power supply