RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
Pin Name
Type
Pin No.
Function
-PI
-BI
TRDYB
I/O
K19
K2
The active low target ready signal (TRDYB) indicates
when the target is ready to start or continue with a
transaction. TRDYB works in conjunction with IRDYB
to complete transaction data phases. During a
transaction in progress, TRDYB is set high to indicate
that the target cannot complete the current data
phase and to force a wait state. TRDYB is set low to
indicate that the target can complete the current data
phase. The data phase is completed when TRDYB is
set low and the initiator ready signal (IRDYB) is also
set low.
When the FREEDM-8 is the initiator, TRDYB is an
input.
When the FREEDM-8 is the target, TRDYB is an
output. During accesses to FREEDM-8 registers,
TRDYB is set high to extend data phases over
multiple PCICLK cycles.
When the FREEDM-8 is not involved in the current
transaction, TRDYB is tri-stated.
As an output signal, TRDYB is updated on the rising
edge of PCICLK. As an input signal, TRDYB is
sampled on the rising edge of PCICLK.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
18
PMC [ PMC-SIERRA, INC ]
