Cirrus Logic CS5528 - Manual (Page 41)

CS5521/22/23/24/28
DS317F8 41
1.5.1 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)
0 Bit is clear when oscillatory condition in modulator does not exist (bit is read only).
1 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)
0 Bit is clear when over-range condition has not occurred (bit is read only).
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 (CS5521/23 only)
01 Physical Channel 2 (CS5521/23 only)
10 Physical Channel 3 (CS5523 only)
11 Physical Channel 4 (CS5523 only)
D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
MSB 14 13 12 11 10 9 8 7 6 5 4
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
3 2 1 LSB 1 1 1 0 CI1 CI0 OD OF
D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
MSB 22 21 20 19 18 17 16 15 14 13 12
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
11 10 9 8 7 6 5 4 3 2 1 LSB