Cypress CY7C0850AV Computer Hardware User Manual


 
CY7C0850AV, CY7C0851AV
CY7C0852AV, CY7C0853AV
Document #: 38-06070 Rev. *H Page 26 of 32
Figure 22. Counter Interrupt and Retransmit
[34, 42, 43, 44, 45]
Switching Waveforms (continued)
t
CH2
t
CL2
t
CYC2
CLK
1FFFD 1FFFF
INTERNAL
ADDRESS
Last_Loaded
Last_Loaded +1
t
HCM
COUNTER
1FFFE
CNTINT
t
SCINT
t
RCINT
1FFFC
CNTEN
ADS
CNT/MSK
t
SCM
Notes
42.CE
0
= OE = B0 – B3 = LOW; CE
1
= R/W = CNTRST = MRST = HIGH.
43.CNTINT
is always driven.
44.CNTINT
goes LOW when the unmasked portion of the address counter is incremented to the maximum value.
45.The mask register assumed to have the value of 1FFFFh.
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