Samhop SM7183
SM7183 is an Audio Echo Processor using CMOS Technology. It has built-in AD/DA and 30KBits SRAM for time delay. When SDI/PDI is tie to VDD, the SM7183's state is control by this internal 5 Bits register.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 Microelectronics Corp. SM7183 ECHO Function Analog positive power supply Analog reference voltage Analog negative power supply Digital negative power supply No connection PINDESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name AVDD VREF AGND DGND NC...