IDT821064 Ver la hoja de datos (PDF) - Integrated Device Technology
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IDT821064 Datasheet PDF : 33 Pages
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IDT821064 QUAD PROGRAMMABLE PCM CODEC WITH GCI INTERFACE
INDUSTRIAL TEMPERATURE RANGE
DESCRIPTION
The IDT821064 is a feature rich, single-chip, programmable 4 chan-
nel PCM CODEC with on-chip filters. Besides the µ-Law/A-Law
companding and linear coding/decoding (14 effective bits + 2 extra sign
bits), IDT821064 also provides 1 FSK generator (can be used for sending
Caller-ID messages), 2 programmable Tone generators per channel
(which can also generate ring signals) together with 2 programmable
chopper clocks for SLIC.
The digital filters in IDT821064 provide the necessary transmit and
receive filtering for voice telephone circuit to interface with time-division
multiplexed systems. An integrated programmable DSP realizes AC
Impedance Matching, Transhybrid Balance, Frequency Response
Correction and Gain Setting functions. The device also provides 7
signaling pins to SLIC on per channel basis.
The IDT821064 has a General Control Interface (GCI), which is also
known as ISDN Oriented Module (IOM®-2). The IDT821064 supports
both compressed and linear data format. This function provides
convenience for the VoXXX applications.
The device also offers strong test capability with several analog/digital
loopbacks and level metering function. It brings convenience to system
maintenance and diagnosis.
A unique feature of ‘Hardware Ring Trip’ is implemented in IDT821064.
When off-hook signal is detected, IDT821064 can reverse an output pin
to stop ringing immediately.
The IDT821064 can be used in Integrated Access Devices (IADs), i.e.
VoIP and VoDSL.
PIN CONFIGURATIONS
VIN1 49
GNDA1 50
VOUT1 51
VDDA12 52
VOUT2 53
GNDA2 54
VIN2 55
CNF 56
VDDB 57
VIN3 58
GNDA3 59
VOUT3 60
VDDA34 61
VOUT4 62
GNDA4 63
VIN4 64
IDT821064
64 pin PQFP
32 DCL
31 FSC
30 NCR
29 NC
28 NC
27 DD
26 DU
25 NC
24 VDDD
23 RESET
22 MCLK
21 GNDD
20 NC
19 S1
18 S0
17 NCR
IOM®-2 is a registered trademark of Siemens AG.
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