Yamaha CDR-HD1500 Service Manual page 36

CDR-HD1500
IC3 : YDC126-F (MAIN P.C.B.)
ACDR
No. Name I/O
29 AES O
30 P14 I+
31 P13 I+
32 P12 I+
33 P11 I+
34 P10 I+
35 P04 O
36 P03 O
37 P02 O
38 P01 O
39 P00 O
40 VSS
41 DD15 I/O
42 DD14 I/O
43 DD13 I/O
44 DD12 I/O
45 DD11 I/O
46 DD10 I/O
47 DD9 I/O
48 DD8 I/O
49 VSS
50 DD7 I/O
51 DD6 I/O
52 DD5 I/O
53 DD4 I/O
54 DD3 I/O
55 DD2 I/O
56 DD1 I/O
57 DD0 I/O
58 VDD
59 /HRST OT
60 /HCS1 OT
61 /HCS0 OT
62 HA2 OT
63 HA1 OT
64 HA0 OT
65 /H10W OT
66 /H10R OT
67 CSEL OT
68 IORDY
69 /HDACK OT
70 HINTRQ
71 /PDIAG OD
72 /DASP OD
73 HDMARQ
74 VSS
75 SENDA O
76 RTRNA I+
77 SENDB O
78 RTRNB I+
79 SDO O
80 SDI
81 VSS
82 RD15 I/O
83 RD14 I/O
84 RD13 I/O
85 RD12 I/O
86 RD11 I/O
87 RD10 I/O
88 RD9 I/O
89 RD8 I/O
90 VSS
91 RD7 I/O
92 RD6 I/O
93 RD5 I/O
94 RD4 I/O
95 RD3 I/O
96 RD2 I/O
36
DC Level Function
C (Unconnected)
T General purpose input port
T General purpose input port
T General purpose input port
T General purpose input port
T General purpose input port
C General purpose input port (Unconnected)
C General purpose input port
C General purpose input port
C General purpose input port
C General purpose input port
GND
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
GND
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
T/C IDE bus interface, data bus
Power supply +5V
C IDE bus interface, reset output
C IDE bus interface, chip select output
C IDE bus interface, chip select output
C IDE bus interface, address output
C IDE bus interface, address output
C IDE bus interface, address output
C IDE bus interface, write strobe output
C IDE bus interface, read strobe output
C IDE bus interface, cable select output
I T IDE bus interface, channel ready input
C IDE bus interface, DMA acknowledge output
I T IDE bus interface, interrupt request input
C IDE bus interface, connection diagnosis output
C IDE bus interface, active slave output
I T IDE bus interface, DMA request input
GND
C DSP3 serial data interface output 1
T DSP3 serial data interface input 1
C DSP3 serial data interface output 2
T DSP3 serial data interface input 2
C Serial audio data output
I T Serial audio data input
GND
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
GND
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus
T/C External RAM interface, data bus