CS5521 datasheet(41/56 Pages) CIRRUS

41 / 56 page

CS5521/22/23/24/28

DS317F2

2.5.1 Conversion Data FIFO Descriptions

CS5521/23 (EACH 16-BIT CONVERSIONS)

CS5522/24/28 (EACH 24-BIT CONVERSION LEVELS)

Conversion Data Bits [23:8 for CS5521/23; 23:0 for CS5522/24/28]

These bits depict the latest output conversion.

OD (Oscillation detect Flag Bit)

Bit is clear when oscillatory condition in modulator does not exist (bit is read only).

Bit is set any time an oscillatory condition is detected in the modulator. This does not occur under normal

operation conditions, but may occur when the input is extremely overranged. The OD flag will be cleared

to logic 0 when the modulator becomes stable.

OF (Over-range Flag Bit)

Bit is clear when over-range condition has not occurred (bit is read only).

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 (CS5521/23 only)

Physical Channel 2 (CS5521/23 only)

Physical Channel 3 (CS5523 only)

Physical Channel 4 (CS5523 only)

D23

D22

D21

D20

D19

D18

D17

D16

D15

D14

D13

D12

MSB

765

D11

D10

D8D7

D4D3

D1D0

LSB

CI1

CI0

D23

D22

D21

D20

D19

D18

D17

D16

D15

D14

D13

D12

MSB

2221

2019

1615

D11

D10

D8D7

D4D3

D1D0

321

LSB

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