IDT82V1671J IDT, Integrated Device Technology Inc, IDT82V1671J Datasheet - Page 70

• Manufacturer Part Number: IDT82V1671J
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT82V1671J

• 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: Not Compliant

RSLIC & CODEC CHIPSET
GREG16: Level Meter Count_Number High 3 bits; Level Meter On/Off, Channel Selection and Once/Continuous Measurement, Read/Write
GREG17: Level Meter Result Register (Low), Read Only (30H)
GREG18: Level Meter Result Register (High), Read Only (31H)
GREG19: FSK Flag Length Register, Read/Write (32H/B2H)
GREG20: FSK Data Length Register, Read/Write (33H/B3H)
(2FH/AFH)
LM_ONCE
LM_EN
LM_CS
LM_CN
This register contains the low byte of the level meter result. The default value of LMRL[7:0] bits is 0.
This register contains the high byte of the level meter result. The default value of the LMRH[7:0] is 0.
The flag signal is a stream of '1'. It is transmitted between two message bytes during the Caller ID data transmission.
This register is used to set the number of the flag bits '1'. The value of FSK_FL[7:0] bits is valid from 0 to 255(d).
The default value of 0(d) means that no flag signal will be sent out.
This register is used to set the length of the data bytes that will be transmitted except the flag signal.
The value of the FSK_DL[7:0] bits is valid from 0 to 64(d). Any value larger than 64(d) will be taken as 64(d) by the DSP.
Command
Command
Command
Command
Command
I/O data
I/O data
I/O data
I/O data
I/O data
LM_ONCE
Execution mode of the integrator in level meter. The integration can be executed continuously or once after every initia-
tion.
LM_ONCE = 0:
LM_ONCE = 1:
Level meter function enable. This bit starts or stops level metering.
LM_EN = 0:
LM_EN = 1:
Level meter channel selection. The LM_CS[1:0] bits determine the data on which channel will be level metered.
LM_CS[1:0] = 00: The data on Channel 1 will be input to the level meter (default);
LM_CS[1:0] = 01: The data on Channel 2 will be input to the level meter;
LM_CS[1:0] = 10: The data on Channel 3 will be input to the level meter;
LM_CS[1:0] = 11: The data on Channel 4 will be input to the level meter.
Level meter count number high 3 bits LM_CN[10:8]. Refer to the description of GREG15 for details.
R/W
R/W
R/W
b7
b7
b7
b7
b7
0
0
LM_EN
b6
b6
b6
b6
b6
0
0
0
0
0
The integrator runs continuously (default);
The integrator runs only once. To start again, the LM_EN bit must be set from 0 to 1 again.
disabled, level metering stops (default);
enabled, level metering starts.
LM_CS
b5
b5
b5
b5
b5
1
1
1
1
1
LM_CS[0]
70
b4
b4
b4
b4
b4
0
1
1
1
1
FSK_FL[7:0]
FSK_DL[7:0]
LMRH[7:0]
LMRL[7:0]
Reserved
b3
b3
b3
b3
b3
1
0
0
0
0
b2
b2
b2
b2
b2
1
0
0
0
0
IDT82V1671/IDT82V1671A, IDT82V1074
LM_CN[10:8]
b1
b1
b1
b1
b1
1
0
0
1
1
b0
b0
b0
b0
b0
1
0
1
0
1