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