scc68681 NXP Semiconductors, scc68681 Datasheet - Page 26

• Manufacturer Part Number: scc68681
• Description: Dual Asynchronous Receiver/transmitter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2004 Apr 06
Dual asynchronous receiver/transmitter (DUART)
TRANSMITTER
NOTES:
1. Timing shown for MR1(7) = 1.
2. Shown for OPCR(4) and MR1(6) = 0.
RECEIVER
ENABLED
ENABLED
(WRITE)
RxRDY
TxRDY
(SR2)
(SR0)
RECEIVER
OVERRUN
ENABLED
CSN
CSN
RxD
TxD
RxRDY/
(READ)
RxRDY
FFULL
FFULL
(OP4)
(OP0)
(SR0)
(SR1)
(SR4)
MR1(4:3) = 11
RTS
CSN
RxD
MASTER STATION
PERIPHERAL STATION
MR1(4+3) = 11
MR1(2) = 1
2
1
OPR(0) = 1
ADD#1 MR1(2) = 0 D0
BIT 9
0
D1
STATUS DATA
ADD#1
ADD#1 1
D1
BIT 9
1
D2
BIT 9
ADD#1
Figure 13. Receive timing
Figure 14. Wake-up mode
D0
D0
D3
BIT 9
0
BIT 9
0
26
STATUS DATA
D4
D0
D5 WILL
BE LOST
MR1(2) = 1 ADD#2
D5
STATUS DATA
D2
D6
STATUS DATA
D3
D6, D7, D8 WILL BE LOST
ADD#2 1
ADD#2 1
D7
STATUS DATA
BIT 9
D4
BIT 9
RESET BY COMMAND
SCC68681
STATUS DATA
D8
ADD#2
SD00119
Product data
BIT 9
0
SD00120