Cypress CY7C0430BV, CY7C0430CV manual Port 1 Write to Port 2 Read34, 35

CY7C0430BV

CY7C0430CV

Switching Waveforms (continued)

Port 1 Write to Port 2 Read[34, 35, 36]

		tCYC2
CLKP1	tCH2			tCL2
						tHA
PORT-1			tSA
					An
ADDRESS

R/WP1	tSW	tHW
tCKHZ	tSD	tHD	tCKLZ
PORT-1
		Dn
DATAIN

		tCYC2		tCCS
CLKP2			tCL2
	tCH2
PORT-2				tSA		tHA
					An
ADDRESS

R/WP2
	tCD2
PORT-2	Qn
DATAOUT
	tDC

Notes:

34.CE0 = OE = LB = UB = CNTLD =VIL; CE1 = CNTRST = MRST = MKLD = MKRD = CNTRD = CNTINC =VIH.

35.This timing is valid when one port is writing, and one or more of the three other ports is reading the same location at the same time. If tCCS is violated, indeterminate data will be read out.

36.If tCCS< minimum specified value, then Port 2 will read the most recent data (written by Port 1) only (2*tCYC2 + tCD2) after the rising edge of Port 2’s clock. If tCCS > minimum specified value, then Port 2 will read the most recent data (written by Port 1) (tCYC2 + tCD2) after the rising edge of Port 2’s clock.

Document #: 38-06027 Rev. *B Page 20 of 37

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