Motorola MC68340 manual DACK2, DACK1

Freescale Semiconductor, Inc...

Freescale Semiconductor, Inc.

Table 2-5. Signal Summary (Continued)

Signal Name	Mnemonic	Input/Output	Active State	Three-State
Transmit Data	TxDA, TxDB	Out	—	No
Clear-to-Send	CTSA, CTSB	In	Low	—
Request-to-Send/	RTSB, RTSA	Out/Out	Low/—	No
OP1, OP0
Serial Clock	SCLK	In	—	—
Transmitter Ready/OP6	T≈RDYA	Out/Out	Low/—	No
Receiver Ready/	R≈RDYA	Out/Out/Out	Low/Low/—	No
FIFO Full/OP4
DMA Request	DREQ2, DREQ1	In	Low	—
DMA Acknowledge	DACK2, DACK1	Out	Low	No
DMA Done	DONE2, DONE1	I/O	Low	No
Timer Gate	TGATE2,	In	Low	—
	TGATE1
Timer Input	TIN2, TIN1	In	—	—
Timer Output	TOUT2, TOUT1	Out	—	Yes
Test Clock	TCK	In	—	—
Test Mode Select	TMS	In	High	—
Test Data In	TDI	In	High	—
Test Data Out	TDO	Out	High	—
Synchronizer Power	VCCSYN	–	—	—
System Power Supply and	VCC , GND	–	—	—
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MOTOROLAMC68340 USER’S MANUAL2- 15

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