AK8996 Datasheet, PDF (65/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
5.1.3) Register Available to Users
n) User-writable data space (Register name: UE)
Free area (EEPROM) available to the user.
Address: 16 hex D[7:0]=EUE[7:0]
Name
Content
Address
UE User-writable data 16 hex
Default
D7
EUE7
0
D6
EUE6
0
D5
EUE5
0
Data
D4 D3
EUE4 EUE3
0
0
D2
EUE2
0
D1
EUE1
0
D0
EUE0
0
5.1.4) Mode Setup Register
o) Measurement mode (Register name: MM)
Sets up the measurement mode such as the selection of the AK8996 supply voltages and
sampling frequencies.
Address: 17 hex D[5:0]= EAC[1:0], EVD[0], ESF[1:0], EBU[0]
D[5:0] Symbol
Mode setup
D[5:4]
EAC[1:0]
Pressure judge circuit control register (adj. mode 1 CM1 D[6.5]
prioritized)
00 NRM1 Pressure judge circuit functions valid (default)
01
APP
Pressure judge circuit invalid, fixed to positive pressure judge
10 APN Pressure judge circuit invalid, fixed to negative pressure judge
11
Reserved
D[3]
EVD[0] Supply voltage setup register
0
VD5
Supply voltage at 5V (default)
1
VD3
Supply voltage at 3V
D[2:1] ESF[1:0] Sampling frequency setup register
00
SF0
Sampling frequency 100 Hz (default)
01
SF1
Sampling frequency 1kHz
10
SF2
Sampling frequency 2kHz
11
SF3
Sampling frequency 10.24kHz
D[0]
EBU[0] BUFFER Block ON/OFF register
0
BU0
BUFFER Block enable (default)
1
BU1
BUFFER Block disable
MS1055-E-02
65
2011/12