
DATA SHEET
PM7367 FREEDM-32P32
ISSUE 2
PMC-1991499
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMER’S INTERNAL USE
126
CHAN[4:0]:
The indirect channel number bits (CHAN[4:0]) indicate the receive channel to
be configured or interrogated in the indirect access.
CRWB:
The channel indirect access control bit (CRWB) selects between a configure
(write) or interrogate (read) access to the receive channel provision RAM.
Writing a logic zero to CRWB triggers an indirect write operation. Data to be
written is taken from the Indirect Channel Data registers. Writing a logic one
to CRWB triggers an indirect read operation. The data read can be found in
the Indirect Channel Data registers.
BUSY:
The indirect access status bit (BUSY) reports the progress of an indirect
access. BUSY is set high when this register is written to trigger an indirect
access, and will stay high until the access is complete. At which point, BUSY
will be set low. This register should be polled to determine when data from an
indirect read operation is available in the RHDL Indirect Channel Data #1 and
#2 registers or to determine when a new indirect write operation may
commence.