Specifications

ATAPI For Streaming Tape QIC-157 Rev B

2.11. Timing of Packet Command

BSY

I/O

CoD

DRQ

INTRQ

Byte Count

Write CMD

Read Status

Rd/Wr Data

Optional use

of Interrupt

5µs Maximum

Less than 50µs

or 3MS if using Interrupt

[Editor’s Note: Time from Write CMD to BSY=0 should be:

“Less than 50 us, 3ms

or 10ms if using Interrupt”

I don’t currently have the ability to change this drawing]