PM7366 Datasheet, PDF (233/286 Pages) PMC-Sierra, Inc – FRAME ENGINE AND DATA LINK MANAGER

RELEASED
DATA SHEET
PMC-1970930
ISSUE 4
PM7366 FREEDM-8
FRAME ENGINE AND DATA LINK MANAGER
be reset, but not set. A bit is reset whenever the register is written, and the data in the
corresponding bit location is a one.
FBTBE:
The FBTBE bit is hardwired to one to indicate the GPIC supports fast back-to-back
transactions with other targets.
DPR:
The Data Parity Reported (DPR) bit is set high if the GPIC is an initiator and asserts or
detects a parity error on the PERRB signal while the PERREN bit is set in the Command
register. The DPR bit is cleared by the PCI Host.
DVSLT[1:0]:
The Device Select Timing (DEVSLT) bits specify the allowable timings for the assertion of
DEVSELB by the GPIC as a target. These are encoded as 00B for fast, 01B for medium, 10B
for slow and 11B is not used. The GPIC allows for medium timing.
TABT:
The Target Abort (TABT) bit is set high by the GPIC when as a target, it terminates a
transaction with a target abort. The TABT bit is cleared by the PCI Host.
RTABT:
The Received Target Abort (RTABT) bit is set high by the GPIC when as an initiator, its
transaction is terminated by a target abort. The RTABT bit is cleared by the PCI Host.
MABT:
The Master Abort (MABT) bit is set high by the GPIC when as an initiator, its transaction is
terminated by a master abort and a special cycle was not in progress. The MABT bit is
cleared by the PCI Host.
SERR:
The System Error (SERR) bit is set high whenever the GPIC asserts the SERRB output. The
SERR bit is cleared by the PCI Host.
PERR:
The Parity Error (PERR) bit is set high whenever the GPIC detects a parity error, even if parity
error handling is disabled by clearing PERREN in the Command register. The PERR bit is
cleared by the PCI Host.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 220