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CY7C419/21/25/29/33
Document #: 38-06001 Rev. *B
Page 9 of 25
Last Write to First Read Full Flag
Last Read to First Write Empty Flag
Retransmit[13]
Notes:
13. EF, HF and FF may change state during retransmit as a result of the offset of the read and write pointers, but flags will be valid at tRTC.
14. tRTC = tPRT + tRTR.
Switching Waveforms (continued)
LAST WRITE
FIRST READ
ADDITIONAL
READS
FIRST WRITE
tWFF
tRFF
R
W
FF
VALID
LAST READ
FIRST WRITE
ADDITIONAL
WRITES
FIRST READ
VALID
tREF
tWEF
tA
W
R
EF
DATA OUT
tRTC
tPRT
tRTR
FL/RT
R,W
[14]
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