IBM DJSA-210 Hard Drive Specifications - Page 56
Signal definitions
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7.3 Signal definitions The pin assignments of interface signals are listed as follows: PIN SIGNAL I/O Type PIN SIGNAL I/O 01 -RESET I TTL 02 GND 03 DD07 I/O 3-state 04 DD08 I/O 05 DD06 I/O 3-state 06 DD09 I/O 07 DD05 I/O 3-state 08 DD10 I/O 09 DD04 I/O 3-state 10 DD11 I/O 11 DD03 I/O 3-state 12 DD12 I/O 13 DD02 I/O 3-state 14 DD13 I/O 15 DD01 I/O 3-state 16 DD14 I/O 17 DD00 I/O 3-state 18 DD15 I/O 19 GND (20) Key 21 DMARQ O 3-state 22 GND 23 -DIOW(*) I TTL 24 GND 25 -DIOR(*) I TTL 26 GND 27 IORDY(*) O OD 28 CSEL I 29 -DMACK I TTL 30 GND 31 INTRQ O 3-state 32 -IOCS16(*) O 33 DA01 I TTL 34 -PDIAG I/O 35 DA00 I TTL 36 DA02 I 37 -CS0 I TTL 38 -CS1 I 39 -DASP I/O OD 40 GND 41 + 5V logic power 42 + 5V motor power 43 GND 44 (reserved) Type 3-state 3-state 3-state 3-state 3-state 3-state 3-state 3-state TTL OD OD TTL TTL Notes: 1. "O" designates an output from the Drive. 2. "I" designates an input to the Drive. 3. "I/O" designates an input/output common. 4. "OD" designates an Open-Drain output. 5. The signal lines marked with (*) are redefined during the Ultra DMA protocol to provide special functions. 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. 6. "power" designates a power supply to the drive. 7. "reserved" designates reserved pins which must be left unconnected. Figure 33. Table of signals Travelstar 32GH/30GT/20GN hard disk drive specifications 42