2.1.2 PCM Bus ....................................................................................................................................................................................10
2.2.1 Signal Processing.......................................................................................................................................................................11
2.2.2 Gain Adjustment.........................................................................................................................................................................11
2.2.5 Frequency Response Correction................................................................................................................................................12
2.3 SLIC Control ............................................................................................................................................................................................12
2.3.1 SI1 and SI2.................................................................................................................................................................................12
2.3.2 SB1, SB2 and SB3 .....................................................................................................................................................................12
2.3.3 SO1 and SO2 .............................................................................................................................................................................12
2.4 Hardware Ring Trip .................................................................................................................................................................................12
2.5 Interrupt and Interrupt Enable..................................................................................................................................................................12
2.8 Dual Tone and Ring Generation..............................................................................................................................................................13
2.10 Channel Power Down/Standby Mode......................................................................................................................................................14
2.11 Power Down/Suspend Mode ...................................................................................................................................................................14
Operating The IDT821054A .............................................................................................................................................................................15
3.1.1 Command Type and Format ......................................................................................................................................................15
3.1.2 Addressing the Local Registers..................................................................................................................................................15
3.1.3 Addressing the Global Registers................................................................................................................................................15
3.1.4 Addressing the Coe-RAM...........................................................................................................................................................15
3.1.5.1 Example of Programming Local Registers .................................................................................................................16
3.1.5.2 Example of Programming Global Registers................................................................................................................16
3.1.5.3 Example of Programming the Coefficient-RAM..........................................................................................................16
3.3 Default State After Reset.........................................................................................................................................................................19
3.4.2 Global Registers List ..................................................................................................................................................................22
3.4.3 Local Registers List ....................................................................................................................................................................28
Absolute Maximum Ratings ............................................................................................................................................................................32
Recommended DC Operating Conditions .....................................................................................................................................................32
6.1 Digital Interface........................................................................................................................................................................................32
6.2 Power Dissipation....................................................................................................................................................................................32
6.3 Analog Interface ......................................................................................................................................................................................33
7.1 Absolute Gain ..........................................................................................................................................................................................34
7.2 Gain Tracking ..........................................................................................................................................................................................34
7.3 Frequency Response ..............................................................................................................................................................................34
7.4 Group Delay ............................................................................................................................................................................................35
10 Ordering Information .......................................................................................................................................................................................41
4
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE
INDUSTRIAL TEMPERATURE
LIST OF FIGURES
Figure - 1
Figure - 2
Figure - 3
Figure - 4
Figure - 5
Figure - 6
Figure - 7
Figure - 8
Figure - 9
Figure - 10
Figure - 11
An Example of the MPI Interface Write Operation .............................................................................................................................. 9
An Example of the MPI Interface Read Operation (ID = 81H)............................................................................................................. 9
Signal Flow for Each Channel ........................................................................................................................................................... 11
Transmit and Receive Timing............................................................................................................................................................ 39
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