Figure 4. I/O Pins And Supported Ata Signals - Seagate Medalist 3240 Product Manual

22 Medalist 3240 and Medalist 2531 Product Manual, Rev. A
Drive pin #
Signal name
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Pins 28, 34 and 39 are used for master-slave communication (details shown below).
Drive 1 (slave) Drive 0 (master)
28
34
39

Figure 4. I/O pins and supported ATA signals

Host pin # and signal description
Reset –
1 Host Reset
Ground 2 Ground
DD7 3 Host Data Bus Bit 7
DD8 4 Host Data Bus Bit 8
DD6 5 Host Data Bus Bit 6
DD9 6 Host Data Bus Bit 9
DD5 7 Host Data Bus Bit 5
DD10 8 Host Data Bus Bit 10
DD4 9 Host Data Bus Bit 4
DD11 10 Host Data Bus Bit 11
DD3 11 Host Data Bus Bit 3
DD12 12 Host Data Bus Bit 12
DD2 13 Host Data Bus Bit 2
DD13 14 Host Data Bus Bit 13
DD1 15 Host Data Bus Bit 1
DD14 16 Host Data Bus Bit 14
DD0 17 Host Data Bus Bit 0
DD15 18 Host Data Bus Bit 15
Ground 19 Ground
(removed) (No Pin)
20
DMARQ 21 DMA Request
Ground 22 Ground
DIOW –
23 Host I/O Write
Ground 24 Ground
DIOR –
25 Host I/O Read
Ground 26 Ground
IORDY 27 I/O Channel Ready
CSEL 28 Cable Select pin
DMACK –
29 DMA Acknowledge
Ground 30 Ground
INTRQ 31 Host Interrupt Request
IOCS16 –
32 Host 16 Bit I/O
DA1 33 Host Address Bus Bit 1
PDIAG –
34 Passed Diagnostics
DA0 35 Host Address Bus Bit 0
DA2 36 Host Address Bus Bit 2
CS1FX –
37 Host Chip Select 0
CS3FX –
38 Host Chip Select 1
DASP –
39 Drive Active / Slave Present
Ground 40 Ground
28 CSEL
PDIAG –
34
DASP–
39
Host
28
34
39