XR16V2651 Datasheet, PDF (43/51 Pages) Exar Corporation – HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE

PRELIMINARY
XR16V2651
REV. P1.0.0
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
FIGURE 18. 68 MODE (MOTOROLA) DATA BUS WRITE TIMING
A0-A2
CS#
R/W#
D0-D7
TADS
Valid Address
TCSL
TADH
TRWS
TCSD
TRWH
TWDS
Valid Data
T WDH
Valid Address
Valid Data
68Write
FIGURE 19. RECEIVE READY & INTERRUPT TIMING [NON-FIFO MODE] FOR CHANNELS A & B
RX
Start
Bit
D0:D7
Stop
Bit
D0:D7
D0:D7
T_SSR
T_SSR
T_SSR
1 Byte
1 Byte
1 Byte
INT
in RHR
in RHR
in RHR
T_SSR
T_SSR
T_SSR
RXRDY#
Active
Data
Ready
T_RR
Active
Data
Ready
T_RR
Active
Data
Ready
T_RR
IOR#
(Reading data
out of RHR)
RXNFM
43