IDT821034 Просмотр технического описания (PDF) - Integrated Device Technology
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IDT821034 Datasheet PDF : 19 Pages
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IDT821034 QUAD PCM CODEC WITH PROGRAMMABLE GAIN
PIN CONFIGURATIONS
INDUSTRIAL TEMPERATURE RANGE
GNDA
40
GNDA
41
VFXI1
42
GSX1
43
VFRO1
44
VDDA
45
GNDA
46
VDDA
47
VFRO2
48
GSX2
49
VFXI2
50
GNDA
51
GNDA
52
52-Pin PQFP
26
I/O0_0
25
GND
24
CS
23
CI
22
CO
21
CCLK
20
BCLK
19
MCLK
18
FS
17
TSX
16
DR
15
VDD
14
DX
PIN DESCRIPTION
Name
GNDA
VDDA
Type
Pin Number
--
46
51
52
40
41
--
47
45
VFRO3
O
3
VFRO2
48
VFRO1
44
VFRO0
37
GSX3
O
2
GSX2
49
GSX1
43
GSX0
38
VFXI3
I
1
VFXI2
50
VFXI1
42
VFXI0
39
O3_4
O
9
O3_3
10
O3_2
11
O2_4
4
O2_3
O
5
O2_2
6
Description
Analog Ground.
All ground pins should be connected to the ground plane of the circuit board.
+5 V Analog Power Supply.
This pin should be bypassed to ground using 0.1µF capacitor. All power supply pins should be connected to
the power plane of the circuit board.
Voice Frequency Receiver Output.
This is the output of receive power amplifier. It can drive 2000 Ω (or greater) load.
Gain Setting Transmit Amplifier Output.
This pin is the output of the gain setting amplifier, and the input to the differential transmit filter. It should be
connected to the corresponding VFXI pin through a resistive network to set the transmit gain. Refer to Figure
5 for details.
Voice Frequency Transmitter Input.
This pin is the input to the gain setting amplifier in the transmit path.
SLIC Signaling Output for Channel 3.
SLIC Signaling Output for Channel 2.
2
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