Cypress CY7C68013A manual Gpif Synchronous Signals Timing Diagram20

CY7C68013A, CY7C68014A

CY7C68015A, CY7C68016A

10.6 GPIF Synchronous Signals

Figure 17. GPIF Synchronous Signals Timing Diagram[20]

IFCLK

GPIFADR[8:0]

tIFCLK

tSGA

RDYX

DATA(input)

CTLX

tSRY
	tRYH
	valid
tSGD	tDAH

tXCTL

DATA(output)N

tXGD

N+1

Table 18. GPIF Synchronous Signals Parameters with Internally Sourced IFCLK[20, 21]

Parameter	Description	Min	Max	Unit
tIFCLK	IFCLK Period	20.83		ns
tSRY	RDYX to Clock Setup Time	8.9		ns
tRYH	Clock to RDYX	0		ns
tSGD	GPIF Data to Clock Setup Time	9.2		ns
tDAH	GPIF Data Hold Time	0		ns
tSGA	Clock to GPIF Address Propagation Delay		7.5	ns
tXGD	Clock to GPIF Data Output Propagation Delay		11	ns
tXCTL	Clock to CTLX Output Propagation Delay		6.7	ns
Table 19. GPIF Synchronous Signals Parameters with Externally Sourced IFCLK[21]
Parameter	Description	Min.	Max.	Unit
t	IFCLK Period[22]	20.83	200	ns
IFCLK
tSRY	RDYX to Clock Setup Time	2.9		ns
tRYH	Clock to RDYX	3.7		ns
tSGD	GPIF Data to Clock Setup Time	3.2		ns
tDAH	GPIF Data Hold Time	4.5		ns
tSGA	Clock to GPIF Address Propagation Delay		11.5	ns
tXGD	Clock to GPIF Data Output Propagation Delay		15	ns
tXCTL	Clock to CTLX Output Propagation Delay		10.7	ns

Notes

20.Dashed lines denote signals with programmable polarity.

21.GPIF asynchronous RDYx signals have a minimum Setup time of 50 ns when using internal 48-MHz IFCLK.

22.IFCLK must not exceed 48 MHz.

Document #: 38-08032 Rev. *L Page 42 of 62

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