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Philips Semiconductors
3.3 V or 5.0 V Universal Asynchronous
Receiver/Transmitter (UART)
RxD
RECEIVER
ENABLED
RxRDY
(SR0)
FFULL
(SR1)
RxRDY/
FFULL
2
(OP5)
RDN
OVERRUN
(SR4)
1
RTS
(OP0)
OPR[0] = 1
NOTES:
1. Timing shown for MR1[7] = 1.
2. Shown for OPCR[4] = 1 and MR[6] = 0.
MASTER STATION
TxD
TRANSMITTER
ENABLED
TxRDY
(SR2)
WRN
MR1[4:3] = 11
ADD#1 MR1[2] = 0 D0
MR1[2] = 1
PERIPHERAL STATION
RxD
RECEIVER
ENABLED
RxRDY
(SR0)
RDN/WRN
MR1[4:3] = 11
2004 Oct 21
D1
D2
D8
STATUS DATA
D1
Figure 15. Receiver Timing
BIT 9
BIT 9
ADD#1
1
D0
0
BIT 9
BIT 9
BIT 9
0
ADD#1 1
D0
0
ADD#1
Figure 16. Wake-Up Mode
D9
D10
D11
STATUS DATA
STATUS DATA
D11 WILL BE LOST
D2
DUE TO OVERRUN
MR1[2] = 1 ADD#2
STATUS DATA
D0
38
Product data sheet
SC28L91
D12
D13
D12, D13 WILL BE LOST
DUE TO RECEIVER DISABLE.
STATUS DATA
D3
D10
RESET BY COMMAND
SD00156
BIT 9
ADD#2 1
BIT 9
BIT 9
ADD#2 1
0
STATUS DATA
ADD#2
SD00096
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