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Chapter 5 ATAPI Interface
Page 28 Seagate Travan 40 Product Manual
Pin Assignment Description Source
21 DMARQ DMA Request Device
22 GND Ground N/A
23 DIOW- I/O Write Host
24 –REQ Ground N/A
25 –I/O I/O Read Host
26 GND Ground N/A
27 IORDY I/O Ready Device
28 CSEL Cable Select Device
29 DMACK DMA Acknowledge Host
30 GND Ground N/A
31 INTRQ Interrupt Request Device
32 10CS16- 16-Bit I/O Device
33 DA1 Device Address Bit 1 Host
34 PDIAG Passed Diagnostics Device
35 DA0 Device Address Bit 0 Host
36 DA2 Device Address Bit 2 Host
37 CS0- Chip Select 0 Host
38 CD1- Chip Select 1 Host
39 DASP- Device Active or Slave
Present
Device
40 Ground Ground N/A
ATAPI commands
This section describes the ATAPI commands as implemented by the STT2401A and
ST3401A. The table below lists the commands in the order of their Operation Code,
and identifies the page number where the command is described in this manual.
Op Code (Hex) Command See Page
00 TEST UNIT READY 84
01 REWIND 80
03 REQUEST SENSE 73
08 READ 67
0A WRITE 86
10 WRITE FILEMARK 89
11 SPACE 82
12 INQUIRY 31
13 VERIFY 85