三合微科股�½有限公司
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AM
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Microelectronics Corp.
SM7183
ECHO
GENERAL DESCRIPTIONS
SM7183 is an Audio Echo Processor
using CMOS Technology. It has built-in
AD/DA and 30KBits SRAM for time delay.
Three sample rate selection and eight
delay time selection. Many combination
to fit your applications.
FEATURES
* Built-in adjustable OSC.
* Built-in power on reset circuit.
* Built-in 30KBits SRAM for delay control.
* Adjustable delay time setting:
Echo Mode: 20.5ms ~ 163.8ms
Surround Mode: 4.1ms ~ 41.0ms
(Based on 6MHz OSC)
* Direct control & Micro-processor control
interface.
* Auto muting during power up and change
mode.
APPLICATIONS
*
*
*
*
*
VCD
Karaok
TV
Audio System
Car Stereo
PIN ASSIGNMENT
AVDD
VREF
AGND
DGND
NC1
OSCR
SDI/PDI
DVDD
Test
EC/SR
SDReq/PD1
SDCK/PD2
SDData/PD3
Mute
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OP1-IN
OP1-OUT
ECFB
NC2
OP2-OUT
OP2-IN
DAC-OUT
DAC-IN
ADC-OUT
ADC-IN
ADCTL-2
ADCTL-1
DACTL-2
DACTL-1
Page 1
V.2.0 MAR. 8, 2002
SAMHOP [ SAMHOP MICROELECTRONICS CORP. ]
