Synchronous Data Transfer Request Message (01H); Figure 4-4 Synchronous Data Transfer Request Message - Data Format - Quantum DLT 8000 Product Manual

Messages

4.2.15 SYNCHRONOUS DATA TRANSFER REQUEST Message (01h)

The tape drive supports initiating synchronous transfer negotiations with the
host, but this feature is disabled by default. To enable it, set the MODE
SELECT VU ERROM parameter EnaInitSyncNeg.
This extended message allows the target and initiator to agree on the values of the
parameters relevant to synchronous transfers. The tape drive will not initiate the
Synchronous Data Transfer Request message; it relies on the initiator to do so. The
Synchronous Data Transfer Request command has the format shown in Figure 4-4.
Bit 7
Byte
0
1
2
3
4
Figure 4–4 Synchronous Data Transfer Request Message — Data Format
4-12
NOTE
6 5 4
Extended Message Identifier (01h)
(see Figure 4-1)
Length (03h)
Message Code (01h)
Transfer Period: Min. = 25 (19h) (equals 100 ns)
Transfer REQ/ACK Offset: Max. = 15
Quantum DLT 8000 Tape System
3 2 1 0