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IDT821054APF8

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42
31
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE
This register is used for MCU to monitor the transmit (A to D) PCM data. For linear code, this register contains the high byte of the
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.
LREG9: A/D Gain, D/A Gain, Channel Power Down and PCM Receive Path Cutoff, Read/Write (08H/88H)
The Channel Power Down bit (PD) selects the operation mode for the corresponding channel:
PD = 0: The corresponding channel is in normal operation state;
PD = 1: The corresponding channel is powered down (default).
The PCMCT bit determines the operation of PCM Receive Path of the corresponding channel:
PCMCT = 0: The PCM Receive Path of the corresponding channel is in normal operation state (default);
PCMCT = 1: The PCM Receive Path of the corresponding channel is cut off.
The A/D Gain bit (GAD) sets the gain of analog A/D for the corresponding channel:
GAD = 0: 0 dB (default);
GAD = 1: +6 dB.
The D/A Gain bit (GDA) sets the gain of analog D/A for the corresponding channel:
GDA = 0: 0 dB (default);
GDA = 1: -6 dB.
Attention: To ensure proper operation, the lower 4 bits of the I/O data byte following the write command (88H) must be '0000'.
LREG10: Tone Generator Enable and Tone Program Enable, Read/Write (09H/89H)
TPROG1 = 0: The default amplitude and frequency coefficients are selected for tone generator 1 (default);
TPROG1 = 1: The amplitude and frequency coefficients for tone generator 1 are programmed by the Coe-RAM.
TPROG0 = 0: The default amplitude and frequency coefficients are selected for tone generator 0 (default);
TPROG0 = 1: The amplitude and frequency coefficients for tone generator 0 are programmed by the Coe-RAM.
TEN1 = 0: Tone generator 1 is disabled (default);
TEN1 = 1: Tone generator 1 is enabled.
TEN0 = 0: Tone generator 0 is disabled (default);
TEN0 = 1: Tone generator 0 is enabled.
b7 b6 b5 b4 b3 b2 b1 b0
Command R/W0001000
I/O data PD PCMCT GAD GDA 0 0 0 0
b7 b6 b5 b4 b3 b2 b1 b0
Command R/W0001001
I/O data Reserved TPROG1 TPROG0 TEN1 TEN0
32
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE
4 ABSOLUTE MAXIMUM RATINGS
Note: Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
5 RECOMMENDED DC OPERATING CONDITIONS
Note: MCLK: 1.536 MHz, 1.544 MHz, 2.048 MHz, 3.072 MHz, 3.088 MHz, 4.096 MHz, 6.144 MHz, 6.176 MHz or 8.192 MHz with tolerance of ± 50 ppm.
6 ELECTRICAL CHARACTERISTICS
6.1 DIGITAL INTERFACE
6.2 POWER DISSIPATION
Note: Power measurements are made at MCLK = 2.048MHz, outputs unloaded.
Ratings Min. Max. Unit
Power supply voltage 6.5 V
Voltage on Any Pin with respect to ground -0.5 5.5 V
Package power dissipation 1W
Storage temperature -65 +150
°C
Parameter Min. Max. Unit
Operating temperature −40 +85
°C
Power supply voltage 4.75 5.25 V
Parameter Description Min. Typ. Max. Units Test Conditions
V
IL
Input low voltage 0.8 V All digital inputs
V
IH
Input high voltage 2.0 V All digital inputs
V
OL
Output low voltage 0.8 V
DX, I
L
= 8 mA,
All other digital outputs, I
L
= 4 mA
V
OH
Output high voltage VDD − 0.6 V
DX, I
L
= −8 mA,
All other digital outputs, I
L
= −4 mA
I
I
Input current −10 10 µA All digital inputs, GND<VIN<VDD
I
OZ
Output current in high-impedance state −10 10 µA DX
C
I
Input capacitance 5 pF
Parameter Description Min. Typ. Max. Units Test Conditions
I
DD1
Operating current 70 mA All channels are active.
I
DD0
Standby current 6 mA
All channels are powered down, with
MCLK present.
33
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE
6.3 ANALOG INTERFACE
Parameter Description Min. Typ. Max. Units Test Conditions
V
OUT1
Output voltage, VOUT 2.25 2.4 2.6 V
Alternating ±zero, µ-law PCM code
applied to DR
V
OUT2
Output voltage swing, VOUT 3.25 Vp-p
R
L
= 300 Ω
R
I
Input resistance, VIN 30 40 60 kΩ 0.25 V < VIN < 4.75 V
R
O
Output resistance, VOUT 20 Ω
0 dBm0, 1020 Hz PCM code applied to
DR
R
L
Load resistance, VOUT 300 Ω External loading
C
L
Load capacitance, VOUT 100 pF External loading
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42

IDT821054APF8

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IC PCM CODEC QUAD MPI 64-TQFP
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