Yamaha A5000 Service Manual page 15

MB87034PF (XK851A00) SPC (SCSI Protocol Controller)
PIN
NO.
NAME I/O
1 /RESET I
2 VSS -
3 NC -
4 NC -
5 NC -
6 /DBP I/O
7 VSS -
8 /DB7 I/O
9 /DB6 I/O
10 /DB5 I/O
11 VDD -
12 VSS -
13 VSS -
14 /DB4 I/O
15 /DB3 I/O
16 /DB2 I/O
17 /DB1 I/O
18 VSS -
19 /DB0 I/O
20 NC -
21 NC -
22 TEST -
23 VSS -
24 DRESP I
25 DREQ O
26 HIN I
27 HDB0 I/O
28 HDB1 I/O
29 HDB2 I/O
30 HDB3 I/O
31 HDB4 I/O
32 HDB5 I/O
33 VDD -
34 HDB6 I/O
35 HDB7 I/O
36 HDBP I/O
37 A0 I
38 A1 I
39 A2 I
40 A3 I
PCM1716E (XU829A00) DAC (Digital to Analog Converter)
PIN
NO.
NAME I/O
1 LRCK I
2 DATA I Data input
3 BCK I Bit clock
4 CLKO O Clock input
5 XTI I Clock input
6 XTO O Clock out
7 DGND - Digital ground
8 VDD - Digital power supply (+5V)
9 Vcc2R - Analog power supply (+5V)
10 AGND2R - Analog ground
11 EXTR O Rch, analog output
12 NC -
13 VOUTR O Rch, analog voltage output
14 AGND1 - Analog ground
FUNCTION
Reset
Ground
SCSI data bus
Ground
SCSI data bus
Power supply
Ground
SCSI data bus
Ground
SCSI data bus
Ground
Response signal for DREQ
Data transfer request
Output control of HDB0-7,HDBP
Data bus
(MB87034 < - >data memory)
Power supply
Data bus
Resistor select
FUNCTION
PIN
NO.
NAME I/O
41 /CLK I
42 VSS -
43 NC -
44 NC -
45 NC -
46 /I/O I/O
47 VSS -
48 /REQ I/O
49 /C/D I/O
50 /SEL I/O
51 VDD -
52 VSS -
53 VSS -
54 /MSG I/O
55 /RST I/O
56 /ACK I/O
57 /BSY I/O
58 VSS -
59 /ATN I/O
60 NC -
61 NC -
62 INT2 O
63 VSS -
64 /CS I
65 /WT I
66 /WTG I
67 /RD I
68 /RDG I
69 D0 I/O
70 D1 I/O
71 D2 I/O
72 D3 I/O
73 VDD -
74 D4 I/O
75 D5 I/O
76 D6 I/O
77 D7 I/O
78 DP I/O
79 DP0 O
80 INTR O
PIN
NO.
NAME I/O
15 Vcc1 - Analog power supply (+5V)
16 VOUTL O Lch, analog voltage output
17 NC -
18 EXTL O Lch, analog output
19 AGND2L - Analog ground
20 Vcc2L - Analog power supply (+5V)
21 /ZERO O Zero data flag
22 /RST I Reset
23 /CS/IWO I Chip select
24 MODE I Mode control select
(H: Software, L: Hardware)
25 /MUTE I Mute control
26 MD/DM0 I Mode control data/ De-emphasis select1
27 MC/DM1 I Mode control BCK/ De-emphasis select2
28 ML/IIS I Mode control Latch/ input format select
A5000/A4000
FUNCTION
Clock
Ground
Data direction
Ground
Request
Command/Data
Select
Power supply
Ground
Message
Reset
Acknowledge for REQ
Busy
Ground
Attention condition
Non-maskable interrupt request
Ground
Chip select
Write strobe
Data bus write control (to HDB0-7,HDBP)
Read strobe
Output control for D0-7,DP
Data bus
(MB87034 < - >internal register)
Power supply
Data bus
Odd number parity of data bus
Interrupt request
(IC805)
FUNCTION
(IC52)
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