60 VMICPCI-7055/CPCI-7055RC Hardware Reference Manual
Publication No. 500-657055-000 Rev. G
The sensor readings returned are in their “raw” values; to convert them to actual values use the
following formulas below.
a. For 3.3 V sensors
V
a
= (V
r
/ 256) * (3.3 / 2.5) * 3.3
Where V
a
= actual voltage
V
r
= “raw” sensor reading
e.g.: if sensor 0x41 says 0xC0 (192 decimal), the actual voltage is
(192/256) * 3.3/2.5 * 3.3 = 3.267 V.
b. For 5 V sensors
V
a
= (V
r
/ 256) * 3.3 * 2
Where V
a
= actual voltage
V
r
= “raw” sensor reading
e.g.: if sensor 0x44 says 0xC3 (195 decimal), the actual voltage is
(195/256) * 3.3 * 2 = 5.027 V.
c. For Temp sensors
T
a
= T
r
Where T
a
= actual temperature in
o
C
T
r
= “raw” sensor reading
e.g.: if sensor 0x61 says 0x1f (31 decimal), the actual temperature is 31
o
C.
B.1.13 FRU Inventory Area Info
This command is used to obtain information about the size and access method of the FRU Inventory
data in the device.
Table B-12 NetFn 0x0A, Cmd 0x10
Byte
Value
Data Field
Comments
Request-
data
1
XXh
FRU device ID. FFh
reserved.
Response-
data
1
00h
Completion code
2
XXh
FRU inventory area size
in bytes, LS Byte.
3
XXh
FRU inventory area size
in bytes, MS Byte.
4
XXh
[7:1] – reserved
[0] – 0b = accessed by
bytes
1b = accessed by
words
