IDT82V1671AJ IDT, Integrated Device Technology Inc, IDT82V1671AJ Datasheet - Page 75

• Manufacturer Part Number: IDT82V1671AJ
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT82V1671AJ

• 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
LREG6: CODEC and RSLIC Mode Control Register, Read/Write (05H/85H)
LM_B
LM_N
UTD
Signaling
DC_FEED
RG
All eight bits in this register and the RING bit in LREG7 are used to control the operating mode of the chipset.
The higher four bits in this register and the RING bit in LREG7 are used to control the operating mode of the CODEC.
The lower four bits in this register are used to control the operating mode of the RSLIC. These four bits are used for MPI mode only.
(In GCI mode, the SCAN_EN and SM[2:0] bits in the downstream C/I channel byte control the operating mode of the RSLIC. Refer to
“4.2.3.1 Downstream C/I Channel Byte” on page 55
The SM[2:0] bits determine the operating mode of the RSLIC as shown in the following:
Command
I/O data
P_DOWN
HPF = 0:
HPF = 1:
Coefficient selection for the level meter bandpass filter
LM_B = 0:
LM_B = 1:
Coefficient selection for the level meter notch filter
LM_N = 0:
LM_N = 1:
Coefficient and threshold selection for the UTD
UTD = 0:
UTD = 1:
Coefficient selection for signaling (thresholds for off-hook, ground-key and ring trip detection)
Signaling = 0:
Signaling = 1:
Coefficient selection for DC feeding characteristic
DC_FEED = 0:
DC_FEED = 1:
Coefficients selection for Ring Generator and Ramp Generator
RG = 0:
RG = 1:
P_DOWN = 0:
P_DOWN = 1:
STANDBY = 0:
STANDBY = 1:
ACTIVE = 0:
ACTIVE = 1:
RAMP = 0:
RAMP = 1:
SCAN_EN = 0:
SCAN_EN = 1:
SM[2:0] = '000':
SM[2:0] = '001':
SM[2:0] = '010':
R/W
b7
STANDBY
b6
0
The highpass filter is enabled (default);
The highpass filter is disabled.
coefficient in the Coe-RAM is used for the level meter bandpass filter;
coefficient in the ROM is used for the level meter bandpass filter (default).
coefficient in the Coe-RAM is used for the level meter notch filter;
coefficient in the ROM is used for the level meter notch filter (default).
coefficient and threshold in the Coe-RAM are used for UTD;
coefficient and threshold in the ROM are used for UTD (default).
coefficients in the Coe-RAM are used;
coefficients in the ROM are used (refer to
coefficient in the Coe-RAM is used;
coefficient in the ROM is used (default).
coefficient in the Coe-RAM is used;
coefficient in the ROM is used (default).
power down mode is disabled;
power down mode is enabled (default).
standby mode is disabled (default);
standby mode is enabled.
active mode is disabled (default);
active mode is enabled.
ramp mode is disabled (default);
ramp mode is enabled;
the corresponding RSLIC will not be accessed (default);
the corresponding RSLIC will be accessed.
Normal Active mode (default);
External Ring;
Internal Ring;
ACTIVE
b5
0
for details)
RAMP
75
b4
0
SCAN_EN
b3
0
Table - 23 on page 62
b2
1
IDT82V1671/IDT82V1671A, IDT82V1074
SM[2:0]
for details) (default).
b1
0
b0
1