821054PQF Integrated Device Technology (Idt), 821054PQF Datasheet - Page 34

• Manufacturer Part Number: 821054PQF
• Description: Audio Codec 4ADC / 4DAC 64-Pin PQFP
• Manufacturer: Integrated Device Technology (Idt)
• Type: PCMr

Specifications of 821054PQF

• Package: 64PQFP
• Number Of Channels: 4ADC /4 DAC
• Number Of Dacs: 4
• Operating Supply Voltage: 5 V

IDT821054 QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE
LREG9: A/D Gain, D/A Gain, Channel Power Down and PCM Receive Path Cutoff, Read/Write (08H/88H)
LREG10: Tone Generator Enable, Read/Write (09H/89H)
transmit PCM data. For compressed code (A/µ-Law), this register is not used (when being read, it will output a data byte of 00H).
The high byte of transmit PCM data will be read out by applying a read command to this register, and at the same time, it will be
transmitted to the PCM highway without any interference.
The Channel Power Down bit (PD) selects the operation mode for the corresponding channel:
PD = 0:
PD = 1:
The PCMCT bit determines the operation of PCM Receive Path of the corresponding channel:
PCMCT = 0:
PCMCT = 1:
The A/D Gain bit (GAD) sets the gain of analog A/D for the corresponding channel:
GAD = 0:
GAD = 1:
The D/A Gain bit (GDA) sets the gain of analog D/A for the corresponding channel:
GDA = 0:
GDA = 1:
Attention: To ensure proper operation, the lower 4 bits of the I/O data byte following the write command (88H) must be '0000'.
TEN1 = 0:
TEN1 = 1:
TEN0 = 0:
TEN0 = 1:
Attention: To ensure proper operation, the b3 and b2 of the I/O data byte following the write command (89H) must be ‘11’.
Command
Command
I/O data
I/O data
The corresponding channel is in normal operation state;
The corresponding channel is powered down (default).
The PCM Receive Path of the corresponding channel is in normal operation state (default);
The PCM Receive Path of the corresponding channel is cut off.
0 dB (default);
+6 dB.
0 dB (default);
-6 dB.
Tone generator 1 is disabled (default);
Tone generator 1 is enabled.
Tone generator 0 is disabled (default);
Tone generator 0 is enabled.
R/W
R/W
PD
b7
b7
PCMCT
b6
b6
0
0
Reserved
GAD
b5
b5
0
0
GDA
34
b4
b4
0
0
b3
b3
1
0
1
1
b2
b2
0
0
0
1
INDUSTRIAL TEMPERATURE RANGE
TEN1
b1
b1
0
0
0
TEN0
b0
b0
0
0
1