82V1671JG8 IDT, Integrated Device Technology Inc, 82V1671JG8 Datasheet - Page 74
![no-image](/images/manufacturer_photos/0/3/324/idt__integrated_device_technology_inc_sml.jpg)
82V1671JG8
Manufacturer Part Number
82V1671JG8
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.82V1671JG8.pdf
(107 pages)
Specifications of 82V1671JG8
Number Of Channels
4
On-hook Transmission
Yes
Polarity Reversal
Yes
On-chip Ring Relay Driver
Yes
Operating Supply Voltage (typ)
3.3V
Operating Temp Range
-40C to 85C
Package Type
PLCC
Operating Temperature Classification
Industrial
Pin Count
28
Mounting
Surface Mount
Operating Current
95mA
Operating Supply Voltage (max)
3.465V
Operating Supply Voltage (min)
3.135V
Lead Free Status / RoHS Status
Compliant
RSLIC & CODEC CHIPSET
LREG4: Coefficient Selection, Read/Write (03H/83H)
LREG5: Coefficient Selection and Filter Control Register, Read/Write (04H/84H)
This register determines whether the default values or the coefficients in Coe-RAM is selected for the programmable filters, tone genera-
tors and DC offset compensation.
FRR
GRX
FRX
GTX
TG
ECF
IMF
DC_OFT
V90
HPF
Command
Command
I/O data
I/O data
CUTOFF = 0:
CUTOFF = 1:
Coefficient selection for the Frequency Response correction in the Receive path
FRR = 0:
FRR = 1:
Coefficient selection for the digital Gain filter in the Receive path
GRX = 0:
GRX = 1:
Coefficient selection for the Frequency Response correction in the Transmit path
FRX = 0:
FRX = 1:
Coefficient selection for the digital Gain filter in the Transmit path
GTX = 0:
GTX = 1:
Coefficient selection for the Tone Generators (TG1 and TG2)
TG = 0:
TG = 1:
Coefficient selection for the Echo Cancellation filter
ECF = 0:
ECF = 1:
Coefficient selection for the Impedance Matching filter
IMF = 0:
IMF = 1:
Compensation value selection for the Offset Register
DC_OFT = 0:
DC_OFT = 1:
V90 filter characteristic enable. The bit is used to select the filter characteristic of the lowpass filter in voice signal path.
The V90 filter characteristic may be selected for a modem transmission to improve the transmission rate and
performance.
V90 = 0:
V90 = 1:
Enable/disable the highpass filter
FRR
R/W
R/W
V90
b7
b7
GRX
HPF
b6
b6
0
0
disabled, the PCM receive path is in normal operation (default);
enabled, the PCM receive path is cut off.
coefficient in the Coe-RAM is selected;
the frequency response correction in the receive path is disabled (default).
coefficient in the Coe-RAM is selected;
the digital gain in the receive path is 0 dB (default).
coefficient in the Coe-RAM is selected;
the frequency response correction in the transmit path is disabled (default).
coefficient in the Coe-RAM is selected;
the digital gain in the transmit path is 0 dB (default).
coefficient in the Coe-RAM is selected;
coefficient in the ROM is selected (default)
(The default values are: TG1Amp = 0.94 V, TG1Freq = 852 Hz, TG2Amp = 0.94 V, TG2Freq = 1447
Hz).
coefficient in the Coe-RAM is selected;
the echo cancellation filter is disabled (default).
coefficient in the Coe-RAM is selected;
the impedance matching filter is disabled (default).
the compensation value in the Coe-RAM is used;
the DC offset compensation value in the ROM (which is 0) is used (default).
The V90 filter is enabled;
The V90 filter is disabled (default);.
LM_B
FRX
b5
b5
0
0
LM_N
GTX
74
b4
b4
0
0
UTD
TG
b3
b3
0
0
Signaling
ECF
b2
b2
0
1
IDT82V1671/IDT82V1671A, IDT82V1074
DC_FEED
IMF
b1
b1
1
0
DC_OFT
RG
b0
b0
1
0