| Pin | Signal | Pin | Signal |
|---|---|---|---|
| 1 | Ground | 2 | -HD SLCT 3 |
| 3 | Ground | 4 | -HD SLCT 2 |
| 5 | Ground | 6 | -Write Gate |
| 7 | Ground | 8 | -CNFG/Status |
| 9 | Ground | 10 | -Xfer ACK |
| 11 | Ground | 12 | -Attention |
| 13 | Ground | 14 | -HD SLCT 0 |
| 15 | KEY (no pin) | 16 | -Sector |
| 17 | Ground | 18 | -HD SLCT 1 |
| 19 | Ground | 20 | -Index |
| 21 | Ground | 22 | -Ready |
| 23 | Ground | 24 | -Xfer REQ |
| 25 | Ground | 26 | -DRV SLCT 0 |
| 27 | Ground | 28 | -DRV SLCT 1 |
| 29 | Ground | 30 | reserved |
| 31 | Ground | 32 | -Read Gate |
| 33 | Ground | 34 | -CMD Data |
ESDI HDD-Interface - 20-Pin Data Connector
Pin
Signal
Pin
Signal
1
-DRV SLCTD
2
-Sector
3
-CMD COMPL
4
-Addr MK EN
5
Ground
6
Ground
7
+Write CLK
8
-Write CLK
9
Ground
10
+RD/REF CLK
11
-RD/REF CLK
12
Ground
13
+NRZ Write
14
-NRZ Write
15
Ground
16
Ground
17
+NRZ Read
18
-NRZ Read
19
Ground
20
-Index
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.