IDT82V1671J IDT, Integrated Device Technology Inc, IDT82V1671J Datasheet - Page 32

• 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

FSK generator. Refer to
programming flow chart for FSK generation.
Table - 9 Registers and FSK-RAM Used for the FSK Generator
RSLIC & CODEC CHIPSET
FSK Modulation Standard
Table - 9
FSK Channel Selection
FSK Generator Enable
Mark After Send
FSK Data RAM
Seizure Length
Transmit Start
Mark Length
Data Length
Flag Length
Parameter
Selection
shows the configuration and control registers used for the
Figure - 16 on page 33
Bits FSK_CS[1:0] in GREG23
Bits FSK_ML[7:0] (GREG22)
Bits FSK_DL[7:0] (GREG20)
Bits FSK_SL[7:0] (GREG21)
Bits FSK_FL[7:0] (GREG19)
Bit FSK_MAS in GREG23
Register Bits/FSK-RAM
Bit FSK_EN in GREG23
Bit FSK_TS in GREG23
Bit FSK_BS in GREG23
FSK-RAM
for a recommended
The length of the Flag Signal is programmable from 0 to 255 (bits).
Data Length is the number of the Caller ID data bytes written in the FSK-RAM. The valid data
length is 0 to 64 (bytes).
Seizure Length is the number of ‘01’ pairs that represent the seizure signal. The length of the
Seizure Signal is two times of the value specified in GREG21. That means, Seizure Length can
be up to 510 pairs.
The length of the Mark Signal is programmable from 0 to 255 (bits).
FSK_TS = 1: FSK transmit start. The FSK_TS bit will be cleared to 0 automatically after the
data in the FSK-RAM is completely sent out.
After the data in the FSK-RAM is sent out, if FSK_MAS = 1, the FSK generator sends out a
mark-after-send signal (a string of ‘1’), otherwise, the output of the FSK generator is muted.
FSK_BS = 0: BELL 202 is selected;
FSK_BS = 1: ITU-T V.23 is selected.
FSK_EN = 0: FSK generator is disabled;
FSK_EN = 1: FSK generator is enabled.
Select one of the four channels to send the Caller ID data.
Total 64 bytes
32
IDT82V1671/IDT82V1671A, IDT82V1074
Notes