DM9801 Просмотр технического описания (PDF) - Davicom Semiconductor, Inc.

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производитель

DM9801

1M Home Phoneline Network Physical Layer Single Chip Transceiver

Davicom Semiconductor, Inc. 

DM9801

1M Home Phoneline Network Physical Layer Single Chip Transceiver

Pin Description (Continued)

Pin No. Pin Name I/O

Description

Miscellaneous:

7

LNKSTA I/O,Z Link Status:

Output, positive true logic. Indication of Link Status.

45

XTAL1 ALG Crystal Pin 1:

This pin should be connected to one side of a 20MHz (±50 ppm) crystal.

46

XTAL2 ALG Crystal Pin 2:

This pin should be connected to the other side of a 20MHz (±50 ppm)

crystal.

21

BGREF ALG Bandgap Voltage Reference:

Connect a 6.20_KΩ, 1% resistor between this pin and the BGGND pin to

provide an accurate current reference for the DM9801.

22

BGGND ALG Bandgap Voltage Reference Return:

Return pin for the 6.20_KΩ resistor connection.

53

TSTMODE I Test Mode Control Pin:

TSTMODE=0: Normal operating mode.

TSTMODE=1: Enable test mode.

1, 2,

NC

No Connect:

3,5,

These pins are reserved. Leave these pins unconnected (floating).

15 – 18,

20,

23 – 27,

30 - 32,

35, 42,

44,

49 – 52,

54, 56,

69, 70,

73 – 78,

80, 87,

89, 98,

99, 100

Power and Ground:

The power (VCC) and ground (GND) pins of the DM9801 are grouped in pairs of two categories - Digital

Circuitry Power/Ground Pairs and Analog Circuitry Power/Ground Pair.

14, 48,

DGND

P Digital logic ground

55, 79,

88,

4, 71, 72

DVCC

P Digital logic power supply

28, 29,

AGND

P Analog circuit ground

38, 39

19, 33,

AVCC

P Analog circuit power supply

34, 43

Preliminary

9

Version: DM9801-DS-P02

March 20, 2000

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