XR16C854 Datasheet, PDF (45/51 Pages) Exar Corporation – QUAD UART WITH RX/TX FIFO COUNTERS,128-BYTE FIFO

XR16C854
TX
-IOW
D0-D7
-TXRDY
START
BIT
DATA BITS (5-8)
STOP
BIT
D0 D1 D2 D3 D4 D5 D6 D7
PARITY
BIT
NEXT
DATA
START
BIT
Active
BYTE #1
T27d
Active
Transmitter ready
T28d
Transmitter
not ready
X654-TX-2
Transmit ready timing in none FIFO mode
Rev. 1.00P
45