PM7382-PI View Datasheet(PDF) - PMC-Sierra
Part Name
Description
MFG CO.
'PM7382-PI' PDF : 330 Pages View PDF
RELEASED
DATA SHEET
PMC-2010333
ISSUE 3
PM7382 FREEDM-32P256
FRAME ENGINE AND DATA LINK MANAGER 32P256
Pin Name Type Pin Function
No.
IRDYB
I/O
P1 The active low initiator ready (IRDYB) signal is
used to indicate whether the initiator is ready to
start or continue with a transaction. IRDYB
works in conjunction with TRDYB to complete
transaction data phases. When IRDYB is set
high and a transaction is in progress, the initiator
is indicating it cannot complete the current data
phase and is forcing a wait state. When IRDYB
is set low and a transaction is in progress, the
initiator is indicating it has completed the current
data phase. The data phase is completed when
IRDYB is set low and the target ready signal
(IRDYB) is also set low.
When the FREEDM-32P256 is the initiator,
IRDYB is an output.
When the FREEDM-32P256 is the target, IRDYB
is an input.
When the FREEDM-32P256 is not involved in
the current transaction, IRDYB is tristated.
IRDYB is updated on the rising edge of PCICLK
or sampled on the rising edge of PCICLK
depending on whether it is an output or an input.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 25
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