Timing Parameters; Setup/Hold Times Of Inputs Relative To Clock; Clock To Output Delays - Xilinx RocketIO User Manual

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Timing Parameters

Timing Parameters
Parameter designations are constructed to reflect the functions they perform, as well as the
I/O signals to which they are synchronous. The following subsections explain the meaning
of each of the basic timing parameter designations used in the tables.

Setup/Hold Times of Inputs Relative to Clock

Basic Format:
ParameterName Format:
Setup/Hold Time (Examples):

Clock to Output Delays

Basic Format:
ParameterName Format:
Output Delay Time (Examples):
RocketIO™ Transceiver User Guide
UG024 (v3.0) February 22, 2007
ParameterName_SIGNAL
where
ParameterName = T with subscript string defining the timing relationship
SIGNAL = name of RocketIO signal synchronous to the clock
T = Setup time before clock edge
GxCK
T = Hold time after clock edge
GCKx
where
x = C (Control inputs)
D (Data inputs)
T _RRST/T _RRST
GCCK GCKC
T _TDAT/T
GDCK GCKD
ParameterName_SIGNAL
where
ParameterName = T with subscript string defining the timing relationship
SIGNAL = name of RocketIO signal synchronous to the clock
T = Delay time from clock edge to output
GCKx
where
x = CO (Control outputs)
DO (Data outputs)
ST (Status outputs)
T _CHBO
GCKCO
T _RDAT
GCKDO
T _TBERR
GCKST
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Setup/hold times of RX Reset input
relative to rising edge of RXUSRCLK2
_TDAT Setup/hold times of TX Data inputs
relative to rising edge of TXUSRCLK2
Rising edge of RXUSRCLK to Channel Bond outputs
Rising edge of RXUSRCLK2 to RX Data outputs
Rising edge of TXUSRCLK2 to TX Buffer Err output
R
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