Seagate ST1.2 - Series 8 GB Removable Hard Drive Product Manual page 32

Table 8: CompactFlash+ interface connector signals
PC Card Memory Mode
24 WP O
25 -CD2 O
26 -CD1 O
[1]
27 D11 I/O
[1]
28 D12 I/O
[1]
29 D13 I/O
[1]
30 D14 I/O
[1]
31 D15 I/O
[1]
32 -CE2 I
33 -VS1 O
34 -IORD I
35 -IORW I
36 -WE I
37 READY O
38 VCC
[5]
39 -CSEL I
40 -VS2 O
41 RESET I
42 -WAIT O
43 -INPACK O
44 -REG I
45 BVD2 O
46 BVD1 O
[1]
47 D08 I/O
[1]
48 D09 I/O
[1]
49 D10 I/O
50 GND
RFU is Reserved for Future Use
Note.
[1] These signals are required only for 16 bit accesses and not required when installed in 8 bit systems.
Devices should allow for 3-state signals not to consume current.
[2] The signal should be grounded by the host.
[3] The signal should be tied to VCC by the host.
[4] The mode is optional for CF+ Cards, but required for CompactFlash Storage Cards.
[5] The -CSEL signal is ignored by the card in PC Card modes. However, because it is not pulled up on the
card in these modes, it should not be left floating by the host in PC Card modes. In these modes, the pin
should be connected by the host to PC Card A25 or grounded by the host.
[6] If DMA operations are not used, the signal should be held high or tied to VCC by the host. For proper
operation in older hosts: while DMA operations are not active, the card shall ignore this signal, including a
floating condition.
26
PC Card I/O Mode
OT3 24 -IOIS16
Ground 25 -CD2
Ground 26 -CD1
[1]
I1Z, OZ3 27 D11
[1]
I1Z, OZ3 28 D12
[1]
I1Z, OZ3 29 D13
[1]
I1Z, OZ3 30 D14
[1]
I1Z, OZ3 31 D15
[1]
I3U 32 -CE2
Ground 33 -VS1
I3U 34 -IORD
I3U 35 -IORW
I3U 36 -WE
OT1 37 -IREQ
Power 38 VCC
[5]
I2Z 39 -CSEL
OPEN 40 -VS2
I2Z 41 RESET
OT1 42 -WAIT
OT1 43 -INPACK
I3U 44 -REG
OT1 45 -SPKR
OT1 46 -STSCHG
[1]
I1Z, OZ3 47 D08
[1]
I1Z, OZ3 48 D09
[1]
I1Z, OZ3 49 D10
Ground 50 GND
O OT3 24
O Ground 25
O Ground 26
I/O I1Z, OZ3 27
I/O I1Z, OZ3 28
I/O I1Z, OZ3 29
I/O I1Z, OZ3 30
I/O I1Z, OZ3 31
I I3U 32
O Ground 33
I I3U 34
I I3U 35
I I3U 36
O OT1 37
Power 38
I I2Z 39
O OPEN 40
I I2Z 41
O OT1 42
O OT1 43
I I3U 44 -DMACK
O OT1 45
O OT1 46
I/O I1Z, OZ3 47
I/O I1Z, OZ3 48
I/O I1Z, OZ3 49
Ground 50
ST1.2 Series Product Manual, Rev. B
[4]
True IDE Mode
-IOIS16 O ON3
-CD2 O Ground
-CD1 O Ground
[1]
D11 I/O I1Z, OZ3
[1]
D12 I/O I1Z, OZ3
[1]
D13 I/O I1Z, OZ3
[1]
D14 I/O I1Z, OZ3
[1]
D15 I/O I1Z, OZ3
[1]
-CS1 I I3Z
-VS1 O Ground
-IORD I I3Z
-IORW I I3Z
[3]
-WE I I3U
INTRQ O OZ1
VCC Power
-CSEL I I2U
-VS2 O OPEN
-RESET I I2Z
IORDY O ON1
DMARC O OZ1
[6]
I I3U
-DASP I/O I1U, ON1
-PDIAG I/O I1U, ON1
[1]
D08 I/O I1Z, OZ3
[1]
D09 I/O I1Z, OZ3
[1]
D10 I/O I1Z, OZ3
GND Ground