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Philips Semiconductors
3.3 V or 5.0 V Universal Asynchronous
Receiver/Transmitter (UART)
(1X OUTPUT)
(1X INPUT)
TxD
TRANSMITTER
ENABLED
TxRDY
(SR2)
WRN
D1
1
CTSN
(IP0)
2
RTSN
(OP0)
OPR(0) = 1
NOTES:
1. Timing shown for MR2[4] = 1.
2. Timing shown for MR2[5] = 1.
2004 Oct 21
1 BIT TIME
(1 OR 16 CLOCKS)
TxC
(INPUT)
t
TXD
TxD
t
TCS
TxC
Figure 12. Transmitter External Clocks
RxC
t
RXS
RxD
Figure 13. Receiver External Clock
D1
D2
D8
D9
START
BREAK
Figure 14. Transmitter Timing
SD00138
t
RXH
SD00139
D3
BREAK
D4
D10
STOP
D11 WILL
BREAK
NOT BE
WRITTEN TO
THE TxFIFO
37
Product data sheet
SC28L91
D6
D12
OPR(0) = 1
SD00155
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