LXT9785 datasheet(94/226 Pages) INTEL

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LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers

Datasheet

Document Number: 249241

Revision Number: 007

Revision Date: August 28, 2003

N6, N7,

N9, N11,

N12

109, 123,

138, 152

VCCT

Analog Power Supply - Transmit.

+2.5 V supply for all analog transmit circuits.

A1, A9,

B3, B7,

C5, C13,

C17, D1,

D3, D6,

D10, D15,

E5, E7,

E9, E11,

E13, E17,

F13, H8,

H9, H10,

J8, J9,

J10, K8,

K9, K10

66, 79,

183, 195

GNDD

Digital Ground.

Ground return for core digital supplies (VCCD). All

ground pins can be tied together using a single ground

plane.

9, 19, 30,

38, 48, 57,

74, 188,

199, 207

GNDIO

Digital GND - I/O Ring.

Ground return for digital I/O circuits (VCCIO).

M5, M13

99, 163

GNDPECL

Digital GND - PECL Signal Detect Inputs.

Ground return for PECL Signal Detect input circuits.

P5, P6,

P13, R7,

R9, R11,

R13, U8

106, 112,

120, 126,

135, 141,

149, 155

GNDR

Analog Ground - Receive.

Ground return for receive analog supply. All ground

pins can be tied together using a single ground plane.

P14, R1,

R3, R5,

R15, R17,

T17, U2,

U4, U6,

U10, U12,

U14, U16,

U17

113, 127,

134, 148

GNDT

Analog Ground - Transmit.

Ground return for transmit analog supply. All ground

pins can be tied together using a single ground plane.

K14

179

SGND

Substrate Ground.

Ground for chip substrate. All ground pins can be tied

together using a single ground plane.

Table 34. Intel® LXT9785/LXT9785E Power Supply Signal Descriptions – BGA23 (Sheet 2 of 2)

Ball/Pin Designation

Symbol

Type

Signal Description

BGA23

PQFP

1. Type Column Coding: I = Input, O = Output, OD = Open Drain output, ST = Schmitt Triggered input, TS =

Three-State-able output, SL = Slew-rate Limited output, IP = weak Internal Pull-up, ID = weak Internal pull-

Down.

LXT9785 Datasheet(PDF) 94 Page - Intel Corporation

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