LXT9785 datasheet(47/226 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

109, 123,

138, 152

N6, N7,

N9, N11,

N12

VCCT

Analog Power Supply - Transmit.

+2.5 V supply for all analog transmit circuits.

66, 79,

183, 195

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

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).

99, 163

M5, M13

GNDPECL

Digital GND - PECL Signal Detect Inputs.

Ground return for PECL Signal Detect input circuits.

106, 112,

120, 126,

135, 141,

149, 155

P5, P6,

P13, R7,

R9, R11,

R13, U8

GNDR

Analog Ground - Receive.

Ground return for receive analog supply. All ground

pins can be tied together using a single ground plane.

113, 127,

134, 148

P14, R1,

R3, R5,

R15, R17,

T17, U2,

U4, U6,

U10, U12,

U14, U16,

U17

GNDT

Analog Ground - Transmit.

Ground return for transmit analog supply. All ground

pins can be tied together using a single ground plane.

179

K14

SGND

Substrate Ground.

Ground for chip substrate. All ground pins can be tied

together using a single ground plane.

Table 15. Intel® LXT9785/LXT9785E Power Supply Signal Descriptions – PQFP (Sheet 2 of 2)

Pin/Ball Designation

Symbol

Type

Signal Description

PQFP

PBGA

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) 47 Page - Intel Corporation

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