Yamaha A5000 Editor, Руководство по обслуживанию

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