LXT9785 datasheet(46/226 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

185

186

187

J15,

J16,

H17

LED5_1

LED5_2

LED5_3

OD, TS, SL,

Port 5 LED Drivers 1-3.

These pins drive LED indicators for Port 5. Each LED

can display one of several available status conditions

as selected by the LED Configuration Register (refer

to Table 96, “LED Configuration Register (Address

20, Hex 14)” on page 213 for details).

189

190

191

H15,

H16,

G17

LED6_1

LED6_2

LED6_3

OD, TS, SL,

Port 6 LED Drivers 1-3.

These pins drive LED indicators for Port 6. Each LED

can display one of several available status conditions

as selected by the LED Configuration Register (refer

to Table 96, “LED Configuration Register (Address

20, Hex 14)” on page 213 for details).

192

193

194

G15,

F17,

F16

LED7_1

LED7_2

LED7_3

OD, TS, SL,

Port 7 LED Drivers 1-3.

These pins drive LED indicators for Port 7. Each LED

can display one of several available status conditions

as selected by the LED Configuration Register (refer

to Table 96, “LED Configuration Register (Address

20, Hex 14)” on page 213 for details).

Table 15. Intel® LXT9785/LXT9785E Power Supply Signal Descriptions – PQFP (Sheet 1 of 2)

Pin/Ball Designation

Symbol

Type

Signal Description

PQFP

PBGA

65, 78, 184,

196

G13, J14,

F5, J5

VCCD

Digital Power Supply - Core.

+2.5 V supply for core digital circuits.

18, 29, 47,

56, 208

A2, A8,

C1, C11,

D14

VCCIO

Digital Power Supply - I/O Ring.

+2.5/3.3 V supply for digital I/O circuits. The digital

input circuits running off of this rail, having a TTL-level

threshold and over-voltage protection, may be

interfaced with 3.3/5.0 V, when the IO supply is 3.3 V,

and 2.5/3.3/5.0 V when 2.5 V.

98, 164

L13, L5

VCCPECL

Digital Power Supply - PECL Signal Detect Inputs.

+2.5/3.3 V supply for PECL Signal Detect input

circuits. If Fiber Mode is not used, tie these pins to

GNDPECL to save power.

103, 116,

117, 130,

131, 144,

145, 158

N13, P4,

P7, P8,

P9, P10,

P11, P12

VCCR

Analog Power Supply - Receive.

+2.5 V supply for all analog receive circuits.

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.

Table 14. Intel® LXT9785/LXT9785E LED Signal Descriptions – PQFP (Sheet 2 of 2)

Pin/Ball

Designation

Symbol

Type1

Signal Description2,3

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.

2. The IP/ID resistors are disabled during H/W Power-Down mode. If a pin is an output or an I/O, the IP/ID

resistors are also disabled when the output is enabled.

3. The LED outputs are three-stated in H/W Power-Down mode and during H/W reset.

LXT9785 Datasheet(PDF) 46 Page - Intel Corporation

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