SCN2681T Ver la hoja de datos (PDF) - Philips Electronics
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SCN2681T Datasheet PDF : 14 Pages
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Philips Semiconductors
Dual asynchronous receiver/transmitter (DUART)
Product specification
SCN2681T
RxD
RECEIVER
ENABLED
RxRDY
(SR0)
FFULL
(SR1)
D1
D2
D3
D4
D5
D6
D7
D8
D6, D7, D8 WILL BE LOST
RxRDY/
FFULL
(OP5)2
RDN
OVERRUN
(SR4)
SD
D1
S = STATUS
D = DATA
D5 WILL
BE LOST
SD
D2
SD SD
D3 D4
RESET BY
COMMAND
RTS1
(OP0)
OPR(0) = 1
NOTES:
1. Timing shown for MR1(7) = 1.
2. Shown for OPCR(4) = 1 and MR1(6) = 0.
Figure 11. Receiver Timing
SD00105
MASTER STATION
TxD
BIT 9
ADD#1 1
TRANSMITTER
ENABLED
TxRDY
(SR2)
WRN
MR1(4–3) = 11
MR1(2) = 1
ADD#1 MR1(2) = 0 D0
BIT 9
D0 0
MR1(2) = 1 ADD#2
BIT 9
ADD#2 1
PERIPHERAL STATION
BIT 9
RxD
0
BIT 9
ADD#1 1
RECEIVER
ENABLED
RxRDY
(SR0)
BIT 9
D0 0
RDN/WRN
MR1(4–3) = 11
ADD#1
S
D
D0
S = STATUS
D = DATA
Figure 12. Wake-Up Mode
1998 Sep 04
11
BIT 9
ADD#2 1
BIT 9
0
SD
ADD#2
SD00106
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