LG GSA-4120B Service Manual page 57

1.4.3 ATAPI Interface Pin List
Pin Name Pin No.
HRSTB 160
DA2 195
DA1 192
DA0 194
DATA[15:0] 180, 178,
172, 170,
168, 166,
164, 162,
161, 163,
165, 167,
169, 171,
177, 179,
DREQ 181
ZIOWB 182
ZIORB 183
IORDY 184
DACKB 185
HINTRQ 186
IOCS16B 187
PDIAGB 193
CS1FXB 196
CS3FXB 197
DASPB 198
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I/O Destination Function
5I ATAPI ATAPI IF control signal (host reset signal)
5I ATAPI ATAPI IF register address signal
5IO ATAPI ATAPI IF data bus
5TO ATAPI ATAPI IF DMA request signal
5I ATAPI ATAPI IF write strobe pulse
5I ATAPI ATAPI IF read strobe pulse
5TO ATAPI ATAPI IF control signal (drive Ready)
5I ATAPI ATAPI IF DMA acknowledge
5TO ATAPI ATAPI IF drive interrupt signal
5TO ATAPI ATAPI IF control signal (16-bit transfer)
5IO ATAPI ATAPI IF control signal
5I ATAPI ATAPI IF register chip select signal
5IO ATAPI ATAPI IF control signal