Sony SCD-XB940 Service Manual page 70

Pin No. Pin Name
110 ARPRD
111 ARPCS
112 XRAMOE
113 XRAMWE
114 SDPRST
115 SDPINT
116 SDPWR
117 SDPRD
118 SDPCS
119 NC
120 VDD
121, 122 GND
123 NC
124 RAMUB
125 RAMLB
126 to 133 HD7 to HD0
134 GND
135 CPUCK
136 GND
137 HDAK1IN
138 HDAK0IN
139 HDRQ1OUT
140 HDRQ0OUT
141 CS1
142 CS4
143 LWR
144 HWR
145 HRD
HA19 to HA18,
146 to 154
HA5 to HA0
155 XINT3
156 XINT1
157 WAIT
158 NC
159, 160 GND
20
I/O
O
Read data output to the RF signal decoder (IC622)
O
Chip select signal output to the RF signal decoder (IC622) "L": active
O
Data enable signal output to the S-RAM (IC609) and ROM (IC632)
O Data write enable signal output to the S-RAM (IC609)
O
Reset signal output to the servo digital signal processor (IC607) "L": reset
I
Interrupt signal input from the servo digital signal processor (IC607)
O
Data write strobe signal output to the servo digital signal processor (IC607)
O Data read strobe signal output to the servo digital signal processor (IC607)
O
Chip select signal output to the servo digital signal processor (IC607) "L": active
—
Not used (open)
—
Power supply terminal (+3.3V)
— Ground terminal
—
Not used (open)
O
Upper byte write enable signal output to the S-RAM (IC609)
O
Low byte write enable signal output to the S-RAM (IC609)
Two-way data bus with the system controller (IC605), S-RAM (IC609), RF signal decoder
I/O
(IC622), and ROM (IC632)
—
Ground terminal
I Clock signal input from the system controller (IC605)
—
Ground terminal
I
Not used (fixed at "H")
I
Not used (fixed at "H")
O Not used (open)
O
Not used (open)
I
Chip select signal output to the system controller (IC605) "L": active
I
Chip select signal output to the system controller (IC605) "L": active
I Write strobe 1 signal output to the system controller (IC605)
I
Write strobe 0 signal output to the system controller (IC605)
I
Read strobe signal output to the system controller (IC605)
I
Address signal output to the system controller (IC605)
O
Interrupt signal 3 output to the system controller (IC605)
O Interrupt signal 1 output to the system controller (IC605)
O
Wait signal output to the system controller (IC605)
—
Not used (open)
—
Ground terminal
Description