AMD8513 datasheet(13/88 Pages) INFINEON

13 / 88 page

Data Sheet

Rev. 1.21, 2005-12-05

ADM8513

Data Sheet

Interface Description

2.2.3

LED Interface

Note: The LED interface is EEPROM-programmable, 2 bit EEPROM control bit, Address 0B[7:6] at EEPROM, is

used to select LED mode, the default setting are:

1. LED0: 100Mbps(on, drive '0') or 10Mbps(off, drive '1')

2. LED1: link (keeps on when link ok) or activity (blinks with 10Hz when Pegasus II is receiving or transmitting but

not colliding

3. LED2: full duplex (keeps on when in full duplex mode) or collision (blinks with 20Hz when colliding)

4. All LED pins will be tri-state when using external PHY (offset 81h with bit[4:2] = 001B)

Mapping between LED action and EEPROM 0B[7:6] setting

Table 4

Physical Interface

Pin or Ball

No.

Name

Type

Buffer

Type

Function

86, 35

RXIP, RXIN

RX Input

46, 47

TXOP, TXON

TX Output

CLK25_I

Crystal Input

25MHz

CLK25_O

Crystal Output

25MHz

RIBB

Reference Bias Resistor, tied to external 10K(1%)

resistor to ground

38, 39

TSTA, TSTB

Test Output Pin

Table 5LED Interface

Pin or Ball

No.

Name

Type

Buffer

Type

Function

LED0

LED display for 100M b/s or 10M b/s speed.

Active low indicates 100Base-TX, active high indicates 10

BaseT.

LED1

LED display for link and activity status.

Active low when link is established.

LED2

LED display for Full Duplex or Collision status.

Active low indicates full duplex, high indicates collision in

half duplex.

Table 6

Mapping between LED action and EEPROM 0B[7:6] setting

EEPROM 0B[7:6] LED Action

0,0

LED0 10 / 100 (OFF/ON)

LED1 LINK / ACTIVITY (ON/FLASH)

LED2 FULL DUP / COL (ON/FLASH)

0,1

LED0 ACTIVITY when LINK (FLASH)

LED1 LINK 10(ON)

LED2 LINK 100(ON)

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