XR10910 Datasheet, PDF (7/19 Pages) Exar Corporation – 16:1 Sensor Interface

XR10910
Register Information
Digital Part Control Register
Reg No.
Hex Dec
Name
Function
R/
W/
C
Byte of
Parameter
Parameter
Default Power-up
Code Condition
Remark
0x00 0 NOP
No operation
C
0
N/A
Does not execute a function. NOP is used to
test successful I²C communication
Reset
0x01 1 SW_RESET Software reset
C
0
N/A
Read ID
0x02 2 DEVICE_ID
Read Device ID
[15:0]: report “0910” in
R
2
0x0910
BCD
[15:12]: reserved
Read HW & SW
0x03 3 VERSION_ID
R
2
[11:8]: Hardware version # N/A
version numbers
[7:0]: Software version #
Resets all registers to default values
Instructs the XR10910 to report its device ID
“0910” in binary form (0000 1001 0001 0000)
Initial H/W version number is ‘0’;
Initial S/W version number is ‘01.’
Sleep in/out
0x04 4
SLEEP_OUT_ Normal operating
REG
mode, system active
C
0
0x05 5
SLEEP_IN_
REG
Sleep Mode
C
0
Basic Config
0x06 6 Gain
Gain select
R/W
1
[2:0]: Gain select
N/A
Active
Puts the XR10190 into active mode. (wake
up)
Puts the analog portion of the XR10910 into
sleep mode.
N/A
Active During sleep mode, the only I²C command
that can be received/processed is the
SLEEP_OUT command (0x04). All other
register addresses will be ignored.
0x00
Eight gain settings are selectable (from 2V/V
Gain = 2 to 760V/V), refer to the Gain Register Table
for more information.
0x07 7 LDO
LDO Settings
[0]:LDO 3V, 2.65V
R/W
1
[1]:LDO disable
LDO Current
0x08 8
LDO Current Sense
C
0
Sense Select
Channel Switch (Input Mux Select)
0x10 16 Select_Input_1 Select Channel 1
C
0
0x11 17 Select_Input_2 Select Channel 2
C
0
0x12 18 Select_Input_3 Select Channel 3
C
0
0x13 19 Select_Input_4 Select Channel 4
C
0
0x14 20 Select_Input_5 Select Channel 5
C
0
0x15 21 Select_Input_6 Select Channel 6
C
0
0x16 22 Select_Input_7 Select Channel 7
C
0
0x17 23 Select_Input_8 Select Channel 8
C
0
0x18 24 Select_Input_9 Select Channel 9
C
0
0x19 25 Select_Input_10 Select Channel 10
C
0
0x1A 26 Select_Input_11 Select Channel 11
C
0
0x1B 27 Select_Input_12 Select Channel 12
C
0
0x1C 28 Select_Input_13 Select Channel 13
C
0
0x1D 29 Select_Input_14 Select Channel 14
C
0
0x1E 30 Select_Input_15 Select Channel 15
C
0
0x1F 31 Select_Input_16 Select Channel 16
C
0
Note: Register Numbers not listed above have no function.
0x00
N/A
Bit 0 controls the LDO voltage (0: 3V; 1: 2.65V).
Bit 1 (Sleep Mode only). Bit 1 controls whether
LDO = 3V _{the LDO shuts down or stays on during Sleep}
Mode. (0: Enable; 1: Disable). When the
XR10910 is active, the LDO is always on.
When on, the LDO current is sensed and a
proportional voltage is present at the output
of the XR10910.
Off
Current Sense Mode remains active until
an input select command is received by the
XR10910.
Select +IN1, -IN1; Channel 1
Select +IN2, -IN2; Channel 2
Select +IN3, -IN3; Channel 3
Select +IN4, -IN4; Channel 4
Select +IN5, -IN5; Channel 5
Select +IN6, -IN6; Channel 6
Select +IN7, -IN7; Channel 7
N/A
Channel 1 Select +IN8, -IN8; Channel 8
is selected Select +IN9, -IN9; Channel 9
Select +IN10, -IN10; Channel 10
Select +IN11, -IN11; Channel 11
Select +IN12, -IN12; Channel 12
Select +IN13, -IN13; Channel 13
Select +IN14, -IN14; Channel 14
Select +IN15, -IN15; Channel 15
Select +IN16, -IN16; Channel 16
© 2014-2015 Exar Corporation
7 / 19
exar.com/XR10910
Rev 1B