CS5467 datasheet(37/46 Pages) CIRRUS

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CS5467

DS714A1

ADVANCE RELEASE

6.2.11 Temperature Offset (Toff) Register

Address: 23

Default = 0xF38701 = -0.0974425

Temperature offset (Toff) is used to remove the temperature channel’s offset at the zero-degree reading. Values

are represented in two's complement notation and in the range of -1.0

≤ Toff < 1.0, with the binary point to the

right of the MSB.

6.2.12 Temperature Measurement (Tmeas ) Register

Address: 26

Default = 0x000000

The Temperature Measurement register is used to cycle-steal voltage channel 2 for temperature measurement.

Writing a one to the LSB causes the temperature to be measured and the Temperature register (T) to be updat-

ed.

6.2.13 System Gain Register ( SYSGain )

Address: 28

Default = 0x500000 = 1.25

System Gain (SYSGain) determines the one’s density of the channel measurements. Small changes in the mod-

ulator due to temperature can be fine adjusted by changing the system gain. The value is represented in two's

complement notation and in the range of -2.0

< SYSGain < 2.0, with the binary point to the right of the second

MSB.

MSB

LSB

-(20)2-1

2-2

2-3

2-4

2-5

2-6

2-7

.....

2-17

2-18

2-19

2-20

2-21

2-22

2-23

MSB

LSB

223

222

221

220

219

218

217

216

.....

MSB

LSB

-(21)20

2-1

2-2

2-3

2-4

2-5

2-6

.....

2-16

2-17

2-18

2-19

2-20

2-21

2-22

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