4-Level FSK Modem Data Pump
Page 47 of 50
MX929B PRELIMINARY INFORMATION
WRITE CYCLE (DATA TO MODEM)
tAH
ADDRESS
A0, A1
ADDRESS VALID
tACSL
tCSH
tCSHI
CS
tWL
WR
tCSRWL
tRHCSL
RD
tDSW
tDHW
DATA
DATA
D0 to D7
VALID
READ CYCLE (DATA FROM MODEM)
tAH
ADDRESS
A0, A1
ADDRESS VALID
tACSL
tCSH
CS
tCSHI
tWHCSL
WR
RD
tCSRWL
tRL
tRX
tRARL
tDHR
DATA VALID
DATA
D0 to D7
tRACL
Figure 28: 2C Parallel Interface Timings
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