CY7C4292V datasheet(10/15 Pages) CYPRESS

Part #	CY7C4292V

Description	64K/128Kx9 Low Voltage Deep Sync FIFOs w/ Retransmit & Depth Expansion

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Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

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CY7C4282V

CY7C4292V

10

Notes:

23. Clocks are free-running in this case.

24. The flags may change state during Retransmit as a result of the offset of the read and write pointers, but flags will be valid at tRTR.

25. For the synchronous PAE and PAF flags an appropriate clock cycle is necessary after tRTR to update these flags.

Switching Waveforms (continued)

Write Programmable Registers

WCLK

tCLKH

tCLKL

PAE OFFSET

LSB

D0 –D8

WEN

tENS

PAF OFFSET

MSB

tCLK

tDS

tDH

4282V–14

PAE OFFSET

MSB

PAF OFFSET

LSB

tENH

LD

tENS

PAF OFFSET

MSB

PAF OFFSET

LSB

tENH

Read Programmable Registers

RCLK

tCLKH

tENS

tCLKL

PAE OFFSET LSB

Q0 –Q15

REN

tENS

PAE OFFSET MSB

tCLK

UNKNOWN

tA

4282V–15

LD

Retransmit Timing

REN/WEN

FL/RT

tPRT

tRTR

4282V–16

EF/FF

[23, 24, 25]

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