AMD Am79C930 manual ISA Plug and Play PIN Summary

P R E L I M I N A R Y

ISA PLUG AND PLAY PIN SUMMARY (continued)

No. of
Pins		Pin Name	Pin Function	Pin Style
1	TXC		Transmit Clock—m ay be configured either as input or output	TS1
			Low Frequency Power Enable—used to p ower up the low-frequency section of
1	LFPE			PTS1
			the transceiver
1	LFCLK		Low Frequency Clock—a re ference signal for the transceiver synthesizer	TS1
			High Frequency Power Enable—used to p ower up the high-frequency section	PTS1
1	HFPE
			of the transceiver
1	HFCLK		High Frequency Clock—a re ference signal for the transceiver synthesizer	TS1
1	ANTSLT		Antenna Select—used to select bet ween two antennas	PTS1
1			Transmit Command—used to select the t ransmit path in the transceiver	TP1
	TXCMD
			Transmit Power Enable—used to p ower up the transmit section of the	TP1
1	TXPE
			transceiver
1	TXDATA		Transmit Data—supplies the t ransmit data stream to the transceiver	TP1
1			Transmit Modulation Enable—ena bles the modulation of transmit data	TP1
	TXMOD
1			Receive Power Enable—ena bles the receive function of the transceiver	PTS1
	RXPE
1	RXDATA		Receive Data—accepts recei ve data in NRZ format from the transceiver	I
1			Frame Detect—sta rt of frame delimiter detection indication	TS1
	FDET
1	RXCIN		Receive Clock Input—optional clo ck input that allows for an external PLL	IPU
1	SDCLK		Serial Data Clock—clo ck output used to access serial peripheral devices	PTS1
1	SDDATA		Serial Data Data—data pin used to access se rial peripheral devices	PTS1
3			Serial Data Select—chip select outputs used to select se rial peripheral devices	PTS1
	SDSEL3–SDSEL1
1			Activity LED—output capa ble of driving an LED	PTS2
	ACT
1			Link LED—output capa ble of driving an LED	PTS2
	LNK
1	ADREF		A/D Reference—an input that can be used to set the analog re ference voltage	I
			for the internal A/D converter
7	SAR6–SAR0		Serial Approximation Register—supplies the value of the serial approximation	TS1
			register used in the A/D converter
2	ADIN1–2		Comparator—A/D comparator inputs	TS1
12	VCC		Power	I
13	GND		Ground	I

Output Driver Types

Name	Type	IOL	IOH	load
TP1	Totem pole	4 mA	–4 mA	50 pF
TS1	Tri-state	4 mA	–4 mA	50 pF
TS2	Tri-state	24 mA	–4 mA	120 pF
PTS1	User-programmable tri-state	4 mA	–4 mA	50 pF
PTS2	User-programmable tri-state	12 mA	–4 mA	50 pF
PTS3	User-programmable tri-state	24 mA	–4 mA	120 pF
OD2	Open drain	24 mA	–4 mA	120 pF
XO	Xtal amplifier	Output	NA	NA
Input Types

Name	Type	Size of Pullup	Size of Pulldown
I	Input	NA	NA
IPU	Input with internal pullup device	>50K Ω	NA
IPD	Input with internal pulldown device	NA	>50K Ω
24	Am79C930