Cirrus-logic CS5534-BS Manual de usuario descargar pdf (Pagina 37)

CS5532/34-BS

DS755F3 37

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]

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

1 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.

00 Physical Channel 1

01 Physical Channel 2

10 Physical Channel 3

11 Physical Channel 4

D31(MSB) D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18 D17 D16

MSB 2221201918 17 16151413121110 9 8

D15 D14D13D12D11D10D9 D8D7D6D5D4D3D2D1D0

7 65432 1LSB00000OFCI1CI0

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

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 49 50

CS5532/34-BS 1

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Cirrus-logic CS5534-BS Manual de usuario Pagina 37

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