XR68C92_05 Datasheet, PDF (29/33 Pages) Exar Corporation – DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER

XR68C92/192
RX
RX
ENABLE
-RxRDY
-FFULL
-RxRDY/
-FFULL
-CS
(Read)
OVERRUN
ERROR
-RTS
D1
D2
D8
D9
D10
D11
D12
D13
D12, D13 Will be lost
due to RX disable
Status Data
(D1)
D11 Will be lost
due to overrun
Status Data Status Data Status Data
(D2)
(D3)
(D10)
Reset by
command
Figure 8: Receive Timing
XR92-RX
TX
D1
D2
D3
Break
D4
D5
TX
ENABLE
-TxRDY
-CS
(Write)
-CTS
-RTS
Rev. 1.33
Figure 9: Transmit Timing
29
XR692-TX