SCC68681E1N40 查看數據表（PDF） - NXP Semiconductors.

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SCC68681E1N40

Dual asynchronous receiver/transmitter (DUART)

NXP Semiconductors. 

Philips Semiconductors

Dual asynchronous receiver/transmitter (DUART)

Product data

SCC68681

TxC

(INPUT)

1 BIT TIME

(1 OR 16 CLOCKS)

tTXD

TxD

TxC

(1X OUTPUT)

tTCS

Figure 10. Transmit timing

SD00117

RxC

(1X INPUT)

RxD

TxD

D1

TRANSMITTER

ENABLED

TxRDY

(SR2)

CSN

(WRITE)

D1

D2

CTSN1

(IP0)

RTSN2

(OP0)

OPR(0) = 1

NOTES:

1. Timing shown for MR2(4) = 1.

2. Timing shown for MR2(5) = 1.

tRXS

tRXH

Figure 11. Receive timing

SD00093

D2

D3

BREAK

D4

D6

D3 START

BREAK

D4 STOP

D5 WILL

D6

BREAK

NOT BE

TRANSMITTED

Figure 12. Transmitter timing

OPR(0) = 1

SD00118

2004 Apr 06

25

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