SBE HW400c/2 User Manual
HighWire HW400c/2 User Reference Guide Rev 1.0
4.2.2 Board Status Register (BSR)
The Board Status Register (BSR) is a Read/Write register. This register reflects the
presence of the CT bus (H.110, see Section 3.3.3), the state of the FACT (Factory)
presence of the CT bus (H.110, see Section 3.3.3), the state of the FACT (Factory)
EDS on the front panel (see Figure 3).
Table 31. Board Select Register (BSR) Offset Address 0x05
6
5
4
ju
L
L
Bit 7
Bit
Bit
Bit
Bit 3
Bit 2
Bit 1
Bit 0
CT_EN_ST T FACT Reserved
DARK Reserved Reserved STLEDB STLEDA
A
R R
-
R/W
- -
R/W
R/W
CT_EN_STAT
H.
H.
H.
ACT
No
Re
Re
ARK
No
Da
Da
Ds turned off)
TLEDB
= 0 Status LED B off
STLEDA
= 0 Status LED A off
4.2.3 LED Regis
its in
ED Register B (see Section 4.2.15) are set to “11”, the contents of LEDA become
ctive and drive the on-board surface-mount LEDs (near cPCI connector J5). When
ble 32
Reg
(LE
ffset A
s 0x0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
= 0
110 present
= 1
110 not present
F
= 0
rmal operation
=
1
served
D
= 0
rmal LED operation
= 1
rk Office (all front panel LE
S
= 1 Status LED B on
= 1 Status LED A on
ter A (LEDA)
LED Register A (LEDA) is a Read/Write register. When the “LEDB[1:0]” b
L
a
active, setting any of the bits to a “1” turns ON the corresponding LED.
L
a
active, setting any of the bits to a “1” turns ON the corresponding LED.
Ta
. LED
ister A
DA) O
ddres
6
LEDA7
L
A5
LEDA6 ED
LEDA4 LEDA3 LEDA2 LEDA1 LEDA0
October 10, 2006
Copyright 2006, SBE, Inc.
Page
49