Travelstar 12GN
Electrical interface specifications |
Models: DARA-206000, 209000, and 212000 |
Cabling
The maximum cable length from the host system to the drive plus
circuit pattern in the host system shall not exceed 18 inches. |
A/T interface
connector
The a/t 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 |
cs0 |
i |
38 |
cs1 |
i |
| 39 |
dasp |
i/o |
40 |
gnd |
|
| 41 |
+5v
logic |
pwr |
42 |
+5v
motor |
pwr |
| 43 |
gnd |
|
44 |
(resv) |
|
Notes:
- "O" designates an output from the
drive.
- "I" designates an input to the drive.
- "I/O" designates an input/output
common.
- "PWR" designates a power supply to the
drive.
- "(Resv)" designates reserved pins
which must be left unconnected.
- "*" these signal lines are redifined
during the Ultra DMA protocol to provide special
functions as detailed in the table below. These
lines change from the conventional to special
definitions at the moment the host decides to
allow a DMA burst, if the Ultra DMA transfer
mode was previously chosen via SetFeatures. The
drive becomes aware of this change upon
assertion of the -DMACK line. These lines revert
back to their original definitions upon the
deassertion of -DMACK at the termination of the
DMA burst.
- There are two input pins for +5V power supply,
"+5V Logic" and "+5V Motor".
These two input pins are tied together within
drive.
|
| Operation |
Special
Definition (Ultra DMA) |
Conventional
Definition |
| Write |
ddmardy |
iordy |
| hstrobe |
dior |
| stop |
diow |
| Read |
hdmardy |
dior |
| dstrobe |
iordy |
| stop |
diow |
|
|
|
