Table of Contents
Advertisement
e. DLM (disable loop master)
This bit is impossible to specify and operates according to the default value.
This bit specifies enabling or disabling of the Loop Master operation.
"1" : • The HDD does not become the Loop Master.
• The HDD only resends the LISM frames that it receives.
• The HDD Permits the INIT to become the Loop Master.
"0" : • The HDD itself is permitted to become the Loop Master.
f. DDIS (disable discovery)
This bit is impossible to specify and operates according to the default value.
This bit specifies settings concerning Port/Address Discovery.
"1" : • Address or Port Discovery is not necessary after Loop Initialization.
• When Loop Initialization is completed, task processing is restarted.
"0" : • Before the INIT restarts task processing, it must wait for Address Discovery or Port
Discovery.
g. PLPB (prevent loop port bypass)
This bit is possible to specify and operates according to the specification.
This bit specifies settings concerning Loop Port bypass (LPB)/Loop Port Enable (LPE).
"1" : • Ignores Loop Port bypass (LPB)/Loop Port Enable (LPE) Primitive.
"0" : • Receiving Loop Port bypass (LPB)/Loop Port Enable (LPE) Primitive, it controls
Port
Bypass circuit according to the received Primitive.
Note:
It is prohibited that "1" is specified in DPIPE and PLPB simultaneously.
If DPIPE=PLPB=1 is specified, it responds with CHECK CONDITION (ILLEGAL
REQUEST, VALID FIELD IN THE PARAMETER LIST).
C141-E054-02EN
4 - 55
Advertisement
Table of Contents
