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| ESMT Features Compliant with USB Specification v1.1, and USB 2.0 full speed Support I2S input and I2S output interface of master mode Sampling frequencies(Fs)48kHz Support recording function Supports Win Me//2000/XP and MacOS True plug-and-play application, no driver is required for basic USB speaker application Support volume/mute control with external button Built-in 5V to 3.3V regulator for internal device operation 12 MHz Crystal Input 32-pin LQFP(Pb free) AD62551A USB controller with external Amplifier and Recording function Description AD62551A is a USB audio controller with I2S interface and supports recording function. The device also has an I2S input port and I2S output port. The I2S output port allows other high performance audio device (i.e. AD8356A/AD8256A) to be controlled by AD62551A. Functional Block Diagram Elite Semiconductor Memory Technology Inc. Publication Date: Apr. 2007 Revision: 1.2 1/10 ESMT Pin Assignment AD62551A Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 Name MSDA MSCL PDO Type I/O O O O O O I O P NC NC P 2 2 Description I C's SDA of Master mode I C's SCL of master mode Power-down output (Note1) Serial audio output (Note1) L/R clock output(Fs) (Note1) BCLK output(64xFs) (Note1) Serial audio data input Master clock(256xFs) Ground No connection No connection 5V supply voltage Characteristics Schmitt trigger TTL input buffer SDATAO LRCIN BCLK SDATAI MCLK GND NC NC VDD Schmitt trigger TTL input buffer Elite Semiconductor Memory Technology Inc. Publication Date: Apr. 2007 Revision: 1.2 2/10 ESMT 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VDD NC NC GND USB/I 2 S AD62551A P NC NC P I NC I O I P O P I/O I/O P I I I O I 5V supply voltage No connection No connection Ground Low is USB mode, high is I2S mode No connection Mode selection bit Crystal output Crystal input Ground 3.3V regulator output 5V supply voltage USB data DUSB data D+ Ground Volume down, low active Volume up, low active Power-down and mute of Class D Error output Reset signal With internal pull-up resistor With internal pull-up resistor Schmitt trigger TTL input buffer Open-Drain output Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer NC SEL XO XI GND REGO VDD USBDM USBDP GND VOLDN VOLUP MUTE ERROR RESET Note1: Must be strapped resistor 1M to 3.3V(REGO) or GND. BCLK, LRCIN and PDO must be strapped to GND. SDATAO is strapped to GND when AD62551A is button mode, otherwise strapped to 3.3V when AD62551A is I2C slave mode. Absolute Maximum Ratings Symbol VDD Vi Tstg Ta Parameter Supply for regulator input Input Voltage Storage Temperature Ambient Operating Temperature Min 0 -0.3 -65 0 Max 5.5 3.6 150 70 Units V V o C o C Recommended Operating Conditions Symbol VDD Ta Parameter Supply for regulator input Ambient Operating Temperature Typ 4.5~5.5 0~70 Units V o C Elite Semiconductor Memory Technology Inc. Publication Date: Apr. 2007 Revision: 1.2 3/10 |
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