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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)
mper in J7 (see Figure 9), and can control and report the state of two of the status
EDS on the front panel (see Figure 3).
Table 31. Board Select Register (BSR) Offset Address 0x05
6 5 4
ju
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.
ACT No
Re
ARK No
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.
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