Pin #

Function

Description

1^(1,2)

GPIO0/P0.0/INT0

General-purpose I/O line 0 (P0.0);

interrupt line 0.

2^(1,2)

GPIO1/P0.1/INT1

General-purpose I/O line 1 (P0.1);

interrupt line 1;

This pin is also used for interfacing to the external flash.

3⁽¹⁾

GPIO2/P0.2

General-purpose I/O line 2 (P0.2).

4⁽¹⁾

GPIO3/P0.3

General-purpose I/O line 3 (P0.3);

This pin is also used for interfacing to the external flash.

5⁽¹⁾

GPIO4/P0.4

General-purpose I/O line 4 (P0.4);

This pin is also used for interfacing to the external flash.

6⁽¹⁾

GPIO5/P0.5

General-purpose I/O line 5 (P0.5);

This pin is also used for interfacing to the WA2000.

7⁽¹⁾

GPIO6/P0.6

General-purpose I/O line 6 (P0.6);

This pin is also used for interfacing to the WA2000.

8⁽¹⁾

GPIO7/P0.7

General-purpose I/O line 7 (P0.7);

This pin is also used for interfacing to the WA2000.

9

GPIO8/P1.0/RX

General-purpose I/O line 8 (P1.0);

RX, W1, and din input of the serial port.

10

GPIO9/P1.1/TX

General-purpose I/O line 9 (P1.1);

TX, W1, and dout output of the serial port.

11

GND

System ground.

12

MD

Mode selection pin.

13

RST

Reset input, active low. External reset is optional.

14

SE

Link status LED control line.

15

SR

Dual-function red status LED control line.

16

SG

Dual-function green status LED control line.

17

RX–

Ethernet port, negative line of the differential input signal pair.

18

RX+

Ethernet port, positive line of the differential input signal pair.

19

TX–

Ethernet port, negative line of the differential output signal pair.

20

TX+

Ethernet port, positive line of the differential output signal pair.

21

AVCC

"Clean" power output for magnetics circuitry.

22

VCC

Positive power input, 3.3V nominal, ±5%, max. current consumption 110mA.