XR16C864 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XR16C864' PDF : 51 Pages View PDF
XR16C864
REV. 2.2.0
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
FIGURE 18. 68 MODE (MOTOROLA) DATA BUS WRITE TIMING FOR CHANNELS A-D
A0-A7
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-D
RX
Start
Bit
D0:D7
Stop
Bit
D0:D7
D0:D7
TSSR
TSSR
1 Byte
1 Byte
INT
in RHR
in RHR
TSSR
TSSR
RXRDY#
Active
Data
Ready
TRR
Active
Data
Ready
TRR
IOR#
(Reading data
out of RHR)
TSSR
1 Byte
in RHR
TSSR
Active
Data
Ready
TRR
RXNFM
47
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