Travelstar 20GN, 30GT, 32GH
Electrical interface specifications
Models: DJSA-232, 230, 220, 210, 205
Cabling
The maximum cable length from the host system to the drive plus circuit
pattern in the host system shall not exceed 18 inches.
IDE interface connector
The AT/IDE interface connector is designed to mate with Dupont part number
69764-044 or equivalent.
Notes: A/T = IDE. Pin position 20 is left blank for secure
connector insertion. Pin position A,B,C, and D are used for drive
address setting.
Signal definition
The pin assignments of interface signals are listed as follows:
| Pin |
Signal |
I/O |
Pin |
Signal |
I/O |
| 01 |
-RESET |
I |
02 |
GND |
|
| 03 |
DD07 |
I/O |
04 |
DD08 |
I/O |
| 05 |
DD06 |
I/O |
06 |
DD09 |
I/O |
| 07 |
DD05 |
I/O |
08 |
DD10 |
I/O |
| 09 |
DD04 |
I/O |
10 |
DD11 |
I/O |
| 11 |
DD03 |
I/O |
12 |
DD12 |
I/O |
| 13 |
DD02 |
I/O |
14 |
DD13 |
I/O |
| 15 |
DD01 |
I/O |
16 |
DD14 |
I/O |
| 17 |
DD00 |
I/O |
18 |
DD15 |
I/O |
| 19 |
GND |
|
(20) |
KEY |
|
| 21 |
DMARQ |
O |
22 |
GND |
|
| 23 |
-DIOW* |
I |
24 |
GND |
|
| 25 |
-DIOR* |
I |
26 |
GND |
|
| 27 |
IORDY* |
O |
28 |
CSEL |
I |
| 29 |
-DMACK |
I |
30 |
GND |
|
| 31 |
INTRQ |
O |
32 |
-IOCS16** |
O |
| 33 |
DA01 |
I |
34 |
-PDIAG |
I/O |
| 35 |
DA00 |
I |
36 |
DA02 |
I |
| 37 |
-CSO |
I |
38 |
-CS1 |
I |
| 39 |
-DASP |
I/O |
40 |
GND |
|
| 41 |
+5V Logic |
PWR |
42 |
+5V Motor |
PWR |
| 43 |
GND |
|
44 |
Reserved |
|
Notes:
-
"O" designates an output from the drive.
-
"I" designates an input from the drive.
-
"I/O" designates an input/output common.
-
"*" these signal lines are redifined during the
Ultra DMA protocol to provide special functions as detailed
in the table below.
-
"**" this signal complies with ATA-2
specifications.
| Operation |
Special Definition (Ultra DMA) |
Conventional Definition |
| Write |
-DDMARDY |
IORDY |
| HSTROBE |
-DIOR |
| STOP |
-DIOW |
| Read |
-HDMARDY |
-DIOR |
| DSTROBE |
IORDY |
| STOP |
-DIOW |
|
