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HighWire HW400c/2 User Reference Guide Rev 1.0
4.2.15 LED Register B (LEDB)
The LED Register B (LEDB) is a Read/Write register. It contains controls for the
eight on-board surface-mount LEDs as well as the optional LAN status LEDs.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Table 44. LED Register B (LEDB) Offset Address 0x14
STLEDD S 1 LEDB0 TLEDC LAN2 LAN1 LAN0 LEDB2 LEDB
y LEDB[1:0] are further explained below in Table 45.
LEDB
[1:0]
L7
STLEDD LED
E
TLEDC = 0 Status LED C off
= 1 Status LED C on
AN[2:0] indicate Port 0 Status
EDB2 ntrolled by register bits STLEDC
EDB[1:0] = 00 On-Board LEDs indicate Boot Status (default)
= 01 On-Board LEDs indicate LAN Status
On-Board LEDs indicate BCM5388 Ethernet Switch Load
Status
= 0 Status D off
= 1
Status L
D D on
S
L = 000 Status LEDs C and D
= 001 Status LEDs C and D indicate Port 1 Status
Status LEDs C and D indicate Port 2 Status = 010
…. ….
= 111 Status LEDs C and D indicate Port 7 Status
L = 0 Status LEDs C and D co
and STLEDD
Status LEDs C and D indicate LAN Status for port = 1
defined by LAN[2:0]
L
n-Board LED (L7 – L0) functions determined bO
Table 45. On-board LED functions as determined by LEDB [1:0]
L6 L5 L4 L3 L2 L1 L0
= 10
= 11 On-Board LEDs controlled by LED Register A
00
M538
DERR
RC_B RE INITA BTST TST2 ST1 0
BC
LE
8
ZI OOT SET CT 3 B BT BTST
01
AN7 LAN LAN5 LAN4 LANL 6 3 LAN2 LAN1 LAN0
10
LOAD7 LOAD6 LOAD5 LOAD4 LOAD3 LOAD2 LOAD1 LOAD0
11
LED EDA L EDA2 LEDA1 LEDA0 A7 L 6 LEDA5 EDA4 LEDA3 L
October 10, 2006 Copyright 2006, SBE, Inc. Page 56