scn68681 NXP Semiconductors, scn68681 Datasheet - Page 22

• Manufacturer Part Number: scn68681
• Description: Dual Asynchronous Receiver/transmitter Duart
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2004 Mar 02
Dual asynchronous receiver/transmitter (DUART)
NOTES:
1. Timing shown for MR1(7) = 1.
2. Shown for OPCR(4) and MR1(6) = 0.
NOTES:
1. Timing shown for MR2(4) = 1.
2. Timing shown for MR2(5) = 1.
TRANSMITTER
RECEIVER
OVERRUN
ENABLED
RxRDY/
(READ)
RxRDY
FFULL
FFULL
(OP4)
ENABLED
(OP0)
(SR0)
(SR1)
(SR4)
RTS
CSN
RxD
(WRITE)
TxRDY
CTSN
RTSN
(SR2)
(OP0)
2
1
(IP0)
CSN
TxD
1
2
OPR(0) = 1
OPR(0) = 1
D1
D1
D2
(1X INPUT)
D1
STATUS DATA
RxC
RxD
D1
D2
Figure 13. Transmitter Timing
Figure 12. Receive Timing
Figure 14. Receive Timing
D2
D3
D3
t
RXS
BREAK
START
22
D3
D4
t
RXH
D5 WILL
BE LOST
D4
BREAK
D5
STATUS DATA
BREAK
STOP
D2
SD00093
TRANSMITTED
D6
STATUS DATA
D4
D5 WILL
NOT BE
D3
D6, D7, D8 WILL BE LOST
D7
STATUS DATA
OPR(0) = 1
D4
D6
RESET BY COMMAND
SCN68681
D8
D6
SD00118
SD00119
Product data