CS5532 datasheet(37/50 Pages) CIRRUS

37 / 50 page

CS5532/34-BS

DS755F3

2.8.1. Conversion Data Output Descriptions

Conversion Data Bits [31:8]

These bits depict the latest output conversion.

NU (Not Used) [7:3]

These bits are masked logic zero.

OF (Over-range Flag Bit) [2]

Bit is clear when over-range condition has not occurred.

Bit is set when input signal is more positive than the positive full scale, more negative than zero (unipolar

mode) or when the input is more negative than the negative full scale (bipolar mode).

CI (Channel Indicator Bits) [1:0]

These bits indicate which physical input channel was converted.

Physical Channel 1

Physical Channel 2

Physical Channel 3

Physical Channel 4

D31(MSB) D30

D29

D28

D27

D26

D25

D24

D23

D22

D21

D20

D19

D18

D17

D16

MSB

2221

2019

D15

D14

D13

D12

D11

D10

D8D7D6D5D4

D2D1D0

LSB

0000

CI1

CI0

Table 4. Output Coding for 24-bit CS5532 and CS5534

Unipolar Input

Voltage

Offset

Binary

Bipolar Input

Voltage

Two's

Complement

>(VFS-1.5 LSB)

FFFFFF

>(VFS-1.5 LSB)

7FFFFF

VFS-1.5 LSB

FFFFFF

------

FFFFFE

VFS-1.5 LSB

7FFFFF

------

7FFFFE

VFS/2-0.5 LSB

800000

------

7FFFFF

-0.5 LSB

000000

------

FFFFFF

+0.5 LSB

000001

------

000000

-VFS+0.5 LSB

800001

------

800000

<(+0.5 LSB)

000000

<(-VFS+0.5 LSB)

800000

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