Cypress CY7C68013A manual Slave Fifo Asynchronous Write, Slave Fifo Synchronous Packet End Strobe

CY7C68013A, CY7C68014A

CY7C68015A, CY7C68016A

10.10 Slave FIFO Asynchronous Write

Figure 21. Slave FIFO Asynchronous Write Timing Diagram[20]

tWRpwh

SLWR	tWRpwl
	tSFD	tFDH
DATA
FLAGS	tXFD

Table 25. Slave FIFO Asynchronous Write Parameters with Internally Sourced IFCLK [23]

Parameter	Description	Min	Max	Unit
tWRpwl	SLWR Pulse LOW	50		ns
tWRpwh	SLWR Pulse HIGH	70		ns
tSFD	SLWR to FIFO DATA Setup Time	10		ns
tFDH	FIFO DATA to SLWR Hold Time	10		ns
tXFD	SLWR to FLAGS Output Propagation Delay		70	ns

10.11 Slave FIFO Synchronous Packet End Strobe

Figure 22. Slave FIFO Synchronous Packet End Strobe Timing Diagram[20]

IFCLK

PKTEND

FLAGS

tPEH

tSPE

tXFLG

Table 26. Slave FIFO Synchronous Packet End Strobe Parameters with Internally Sourced IFCLK[21]

Parameter	Description	Min	Max	Unit
tIFCLK	IFCLK Period	20.83		ns
tSPE	PKTEND to Clock Setup Time	14.6		ns
tPEH	Clock to PKTEND Hold Time	0		ns
tXFLG	Clock to FLAGS Output Propagation Delay		9.5	ns
Table 27. Slave FIFO Synchronous Packet End Strobe Parameters with Externally Sourced IFCLK[21]
Parameter	Description	Min	Max	Unit
tIFCLK	IFCLK Period	20.83	200	ns
tSPE	PKTEND to Clock Setup Time	8.6		ns
tPEH	Clock to PKTEND Hold Time	2.5		ns
tXFLG	Clock to FLAGS Output Propagation Delay		13.5	ns
Document #: 38-08032 Rev. *L				Page 46 of 62

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