Cypress CY7C68013, Manual

Page: 39 / 48

CY7C68013
Document #: 38-08012 Rev. *A Page 39 of 48
9.5 GPIF Synchronous Signals
Notes:
12. Dashed lines denote signals with programmable polarity
13. GPIF asynchronous RDY
x
signals have a minimum set-up time of 50 ns when using internal 48-MHz IFCLK.
14. IFCLK must not exceed 48 MHz.
Table 9-4. GPIF Synchronous Signals Parameters with Internally Sourced IFCLK
[13, 14]
Parameter Description Min. Max. Unit
t
IFCLK
IFCLK Period 20.83 ns
t
SRY
RDY
X
to Clock Set-up Time 8.9 ns
t
RYH
Clock to RDY
X
0 ns
t
SGD
GPIF Data to Clock Set-up Time 9.2 ns
t
DAH
GPIF Data Hold Time 0 ns
t
SGA
Clock to GPIF Address Propagation Delay 7.5 ns
t
XGD
Clock to GPIF Data Output Propagation Delay 11 ns
t
XCTL
Clock to CTL
X
Output Propagation Delay 6.7 ns
Table 9-5. GPIF Synchronous Signals Parameters with Externally Sourced IFCLK
[14]
Parameter Description Min. Max. Unit
t
IFCLK
IFCLK Period 20.83 200 ns
t
SRY
RDY
X
to Clock Set-up Time 2.9 ns
t
RYH
Clock to RDY
X
3.7 ns
t
SGD
GPIF Data to Clock Set-up Time 3.2 ns
t
DAH
GPIF Data Hold Time 4.5 ns
t
SGA
Clock to GPIF Address Propagation Delay 11.5 ns
t
XGD
Clock to GPIF Data Output Propagation Delay 15 ns
t
XCTL
Clock to CTL
X
Output Propagation Delay 10.7 ns
DATA(output)
t
XGD
IFCLK
RDY
X
DATA(input)
valid
t
SRY
t
RYH
t
IFCLK
t
SGD
CTL
X
t
XCTL
t
DAH
N N+1
GPIFADR[8:0]
t
SGA
Figure 9-4. GPIF Synchronous Signals Timing Diagram
[12]