Rainbow Electronics LM41 - Manual (Page 17)

2.0 Register Set
(Continued)
2.5 DEVICE ID (Addr: 000 010; 02h)
Reg
Add
Register
Name
R/
W
P
O
R
Val
Bit
15
MSb
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSb
000 010 Device ID R 24h
RevID DeviceID
0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0
The device ID is defined by the manufacturer of the device and is unique for each device produced by a manufacturer. Bits 15-11
identify the revision number of the die and will be incremented upon revision of the device.
Bit Type Description
10-0 RO DeviceID (Device ID Value) A fixed value that identifies the device.
15-11 RO RevID (Revision ID Value) A fixed value that identifies the device revision.
2.6 CAPABILITIES FIXED (Addr: 000 011; 03h)
Reg
Add
Register
Name
R/
W
P
O
R
Val
Bit
15
MSb
Bit
14
Bit
13
Bit
12
Bit
11
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
LSb
000 011
Capabilities
Fixed
R 21h
Reserved FuncDescriptor2 FuncDescriptor1
0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
The value of this register defines the capabilities of the LM41. The LM41 supports two functions, that of Temperature
Measurement type (Function 1) and Voltage-Only Measurement type (Function 2). Please refer to the SensorPath specification
for further details on other FuncDescriptor values.
2.7 DEVICE STATUS (Addr: 000 100; 04h)
This register is set to the reset value by a Device Reset.
Reg Add Register Name
R/
W
P
O
R
Val
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
Bit 0
LSb
000 100 Device Status R 0h BER
Res
ERF2 ERF1
Res
SF2 SF1
0 0 0
Bit Type Description
0 RO SF1 (Status Function 1) This bit is set by a Function Event within Function 1. Event details are function
dependent and are described within the function. SF1 is cleared by Device Reset or by handling the event
within the Temperature Measurement Function (see Section 2.9 for further details).
0: Status flag for Function 1 is inactive (no event).
1: Status flag for Function 1 is active indicating that a Function Event has occurred.
1 RO SF2 (Status Function 2) Same as SF1 for Function 2, Voltage-Only Measurement Function. (see Section
2.10 for further details)
3-2 RO Reserved. Will always read "0".
4 RO ERF1 (Error Function 1) This bit is set in response to an error indication within Function 1. ERF1 is cleared
by Device Reset or by handling the error condition within the Temperature Measurement Function (see
Section 2.9 for further details).
0: No error occurred in Function 1.
1: Error occurred in Function 1.
5 RO ERF2 (Error Function 2) Same as ERF1 for Function 2, Voltage-Only Measurement Function. (see Section
2.10 for further details)
6 RO Reserved. Will always read "0".
LM41
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