User's Manual

Product Brief – Airborne SDIO/SPI 802.11b/g Radio Quatech, Inc.
846-8310-240 June 2010 18
Table 13 - GSPI Protocol Timing Values
Symbol
Parameter
Min
Typ
Max
Units
T
SCLK
Clock period
20
ns
T
WH
Clock High
5
ns
T
WL
Clock Low
9
ns
T
WR
Clock Rise Time
1
ns
T
WF
Clock Fall Time
1
ns
T
H
Serial Data In Hold Time
2.5
ns
T
SU
Serial Data In Setup Time
2.5
ns
T
V
Serial Data Out Hold Time
5
ns
T
CSS
Chip Select Low to Clock
Valid
5
ns
T
CSH
Clock Rise or Fall to Chip
Select High
0
ns
T
CRF
Chip select High to Chip
Select Low
400
ns