59
Pin Name
Pin No.
I/O
Destination
Function
HRSTB 160
5I
ATAPI
ATAPI- IF
control
signal
(host
reset
signal)
DA2
DA1
DA0
195
192
194
5I ATAPI
ATAPI- IF
register
address
signal
DATA[15:0] 180,
178,
172, 170,
168, 166,
164, 162,
161, 163,
165, 167,
169, 171,
177, 179,
5IO ATAPI
ATAPI- IF
data
bus
DREQ 181
5TO
ATAPI
ATAPI- IF
DMA
request
signal
ZIOWB 182
5I
ATAPI
ATAPI- IF
write
strobe
pulse
ZIORB 183
5I
ATAPI
ATAPI- IF
read
strobe
pulse
IORDY
184
5TO ATAPI
ATAPI- IF control signal (drive Ready)
DACKB
185
5I
ATAPI
ATAPI- IF DMA acknowledge
HINTRQ 186
5TO
ATAPI
ATAPI- IF
drive
interrupt
signal
IOCS16B 187 5TO
ATAPI ATAPI- IF
control
signal
(16-bit
transfer)
PDIAGB 193
5IO
ATAPI
ATAPI- IF
control
signal
CS1FXB
CS3FXB
196
197
5I ATAPI
ATAPI- IF
register
chip
select
signal
DASPB 198
5IO
ATAPI
ATAPI- IF
control
signal
1.4.3 ATAPI Interface Pin List