Philips Semiconductors
Product specification
Dual asynchronous receiver/transmitter (DUART)
SCC2692
D1
D2
D3
D4
D5
D6
D7
D8
RxD
D6, D7, D8 WILL BE LOST
RECEIVER
ENABLED
RxRDY
(SR0)
FFULL
(SR1)
RxRDY/
FFULL
2
(OP5)
RDN
STATUS DATA
STATUS DATA STATUS DATA STATUS DATA
D5 WILL
BE LOST
D1
D2
D3
D4
OVERRUN
(SR4)
RESET BY COMMAND
1
RTS
(OP0)
OPR(0) = 1
NOTES:
1. Timing shown for MR1(7) = 1.
2. Shown for OPCR(4) = 1 and MR(6) = 0.
SD00141
Figure 11. Receiver Timing
MASTER STATION
TxD
BIT 9
BIT 9
BIT 9
1
ADD#1
1
D0
0
ADD#2
TRANSMITTER
ENABLED
TxRDY
(SR2)
WRN
MR1(4–3) = 11
MR1(2) = 1
ADD#1 MR1(2) = 0 D0
MR1(2) = 1 ADD#2
PERIPHERAL STATION
BIT 9
BIT 9
1
BIT 9
0
BIT 9
BIT 9
0
0
ADD#1
D0
ADD#2 1
RxD
RECEIVER
ENABLED
RxRDY
(SR0)
RDN/WRN
MR1(4–3) = 11
ADD#1
STATUS DATA
STATUS DATA
ADD#2
D0
SD00142
Figure 12. Wake-Up Mode
23
1998 Sep 04
NXP [ NXP ]
