QSG-5200
12
Holt Integrated Circuits
LED Indicators
The board has two LED indicators (LED0 and LED1). LED1 is connected to pin 31 and LED0 is connected
to pin 30 of the HI-5200PC (U1),
The two LEDs are programmable to LED mode ‘00’ or ‘01’ via register 1E (hex), bits [15:14], and are
defined in the following table.
Table 6. Definitions for HI-5200PC PHY Evaluation Board LEDs.
LED Mode
LED1 (U1 pin 31)
LED0 (U1 pin 30)
00
Speed
U1 Pin 31
State
LED State
Link /
Activity
U1 Pin 30
State
LED State
10BT
H
OFF
No Link
H
OFF
100BT
L
ON
Link
L
ON
-----------
-----------
-----------
Activity
Toggle
Blinking
01
Activity
U1 Pin 31
State
LED State
Link
U1 Pin 30
State
LED State
No Activity
H
OFF
No Link
H
OFF
Activity
L
ON
Link
L
ON
10
Reserved – Not Used
Reserved – Not Used
11
Reserved – Not Used
Reserved – Not Used
