821054PQF Integrated Device Technology (Idt), 821054PQF Datasheet - Page 2

• Manufacturer Part Number: 821054PQF
• Description: Audio Codec 4ADC / 4DAC 64-Pin PQFP
• Manufacturer: Integrated Device Technology (Idt)
• Type: PCMr

Specifications of 821054PQF

• Package: 64PQFP
• Number Of Channels: 4ADC /4 DAC
• Number Of Dacs: 4
• Operating Supply Voltage: 5 V

IDT821054 QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE
DESCRIPTION
channel PCM CODEC with on-chip filters. Besides the
companding and linear coding/decoding (14 effective bits + 2 extra sign
bits), the IDT821054 also provides 1 FSK generator for sending Caller-
ID messages, 2 programmable tone generators per channel (which can
generate ring signals) and 2 programmable chopper clocks for SLICs.
receive filtering for voice telephone circuits to interface with time-division
multiplexed systems. An integrated programmable DSP realizes AC
impedance matching, transhybrid balance, frequency response
correction and gain adjustment functions. The IDT821054 supports 2
PCM buses with programmable sampling edge, which allows an extra
delay of up to 7 clocks. Once the delay is determined, it is effective to all
PIN CONFIGURATION
The IDT821054 is a feature rich, single-chip, programmable 4-
The digital filters in the IDT821054 provide necessary transmit and
VDDA12
VDDA34
GNDA1
GNDA2
GNDA3
GNDA4
VOUT1
VOUT2
VOUT3
VOUT4
VDDB
VIN1
VIN2
VIN3
VIN4
CNF
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
µ
-Law/A-Law
64 Pin PQFP
IDT821054
2
four channels of the IDT821054. The device also provides 7 signaling
pins per channel for SLICs.
Two PCM buses are provided to transfer the compressed or linear PCM
data.
loopbacks and level metering function. It brings convenience to system
maintenance and diagnosis.
IDT821054. When an off-hook signal is detected, the IDT821054 will
reverse an output pin to stop the ringing signal immediately.
applications such as Central Office Switch, PBX, DLC and Integrated
Access Devices (IADs), i.e. VoIP and VoDSL.
The IDT821054 is programmed via a Microprocessor Interface (MPI).
The device offers strong test capability with several analog/digital
A unique feature of “Hardware Ring Trip” is implemented in the
The IDT821054 can be used in digital telecommunication
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
INDUSTRIAL TEMPERATURE RANGE
BCLK
FS
DR2
DX2
TSX2
DR1
DX1
TSX1
VDDD
RESET
MCLK
GNDD
CO
CI
CCLK
CS