06 USB / UART Speaker MCU HT82A824R USB / i-x Docking Characteristics USB/i-x Docking Speaker Supports i-x Charging and Sync Media Key High Performance 16-bit Stereo Audio Sigma-delta DAC Supports Auxiliary Audio Stereo Input and Programmable Attenuator Note: i-x = i-Phone or i-Pod or i-Pad Sync / Dock Mode Switch USB Connector HT82A824R Docking Connector Dock / USB Mode Indicator Dock / USB Mode Select i-x Backlight On 30 sec Media Player Control i-x Power Down Application Areas USB Speakers, USB Speaker with i-x Docking, USB Toys Block Diagram Application Circuit D VQ C2 10uF C5 + C3 10uF 0.1uF BIAS C4 0.1uF FILT_P + C6 10uF + Line Out_R C1 0.1uF MUSIC_R Line Out_L C7 0.1uF MUSIC_L ZXMP3A16 G 1 C8 + 10uF DP1 R2 33 USBDP DM1 R4 33 USBDN C15 47p UM 1 JP1 (NC) 2 DM1 UP 1 JP2 (NC) 2 DP1 R3 1.5K U2 V33O VQ AVSS1 AVCC1 MUSIC_R MUSIC_L BIAS AVSS2 LOUT ROUT AVCC2 AVCC3 C13 0.1uF C16 47p AVCC2 Vol_Down VQ USBVSS VCCA1&VDD VCCA2&VCCA3 RESETB MUSIC_IN_R OSCO MUSIC_IN_L OSCI BIAS PC0 VSS PC1 HT82A824R_48LQFP LOUT PC2 ROUT PC3 VCCA4&VCCA5 PC4 VCCA6 PC5 AIN5 PC6 AIN4 AIN3 AIN2 AIN1 AIN0 VSS PB4 PB3 PB2 PB1 PB0 PC7 SW5 1 2 3 4 5 6 7 8 9 10 11 12 + AVSS3 AD_Source 3.3V_OUT SW4 C24 10uF Rewind_SW SW2 Forward_SW SW7 VDP2 VCC 1 C29 0.1uF C28 10uF USBDN VCC RESETB OSCO OSCI SY N_DET SPK_LED IPOD_LED IPOD_POWER ACC Detect I2C_SDA I2C_SCL VCC Y1 12MHz R5 470 D5 SPEAKER R6 470 SY N_DET 2 IPOD_DN 5 IPOD_DP 11 D2 IPOD SPK_LED IPOD_LED USB Speaker Circuit Security circuit VCC R32 VCC 100K nRSTB nRSTB 20 19 18 17 16 NC MODE1 I2C_SDA I2C_SCL GND VDP1 1 15 14 13 12 11 2 BEAD AVCC2 AVCC1 C26 0.1uF C27 10uF R13-2 6.8K R14-2 6.8K ACC ID 9 10 DP2_1 12 DP2 JP5 0(N.C) 2 DM2 1 JP6 0(N.C) 2 DP2 AVSS2 L4 L6 VDP1 1 2 BEAD 2 AVSS3 2 AVSS5 L7 AVCC3 C31 0.1uF 1 C32 10uF BEAD 0 C59 0.1uF L8 1 2 BEAD 0 Security IC Circuit DM2 1 BEAD I2C_SDA I2C_SCL IpadSecurity R14-1 43K AVSS5 AVSS5 3.3V_OUT FW PWR FW PWR ACC ID TPBVDP2_IN TPB+ IPOD_DN TPAIPOD_DP TPA+ FW GND FW GND R15 ACC Detect 549K(NC) i-x Docking Circuit 2 1 10K 10K 6 7 8 9 10 VCC NC MODE1 NC nRESET VCC DM2_1 6 DP2_1 BEAD NC NC NC NC NC C58 0.1uF 1 2 3 4 5 1 R30 R31 NC NC NC NC NC U8 R13-1 43K Common GND Common GND Line Out R Line Out L Line In R Line In L NC NC NC NC Accessory Detect TX RX NC GND USB GND NC +3.3V Out FW PWR FW PWR Accessory ID TPBUSB PWR TPB+ USB DTPAUSB D+ TPA+ FW GND FW GND I-POD CON_F 4 7 L2 L3 VCC R12 1K ACC Detect I_TxD I_RxD C35 0.1uF V33 DM2_1 AD_Source PLAY _SW DP2_1 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 29 30 SW PUSHBUTTON-4PDT SW9 SW3 R10 75K 3 8 SW1 Power_SW SW10 1 COM GND COM GND Line Out_R Line Out_L Line In_R Line In_L VDP2_IN R11 43.2K DM2_1 C14 0.1uF R8 10K BL_SW R9 47K RESETB 36 35 34 33 32 31 30 29 28 27 26 25 J6 Q1 MOSFET P 3 2 2 R1 100K Mute_SW SW8 S 1 C11 0.1uF I_TxD I_RxD C25 0.1uF 13 14 15 16 17 18 19 20 21 22 23 24 SW6 Vol_up VCC BEAD IPOD_POWER VCC VCC 2 48 47 46 45 44 43 42 41 40 39 38 37 BEAD 1 C9 0.1uF FILT_P PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 VSS V33O USB+ L1 VDP1 FILT_P Power_SW Forward_SW PLAY_SW Rewind_SW Vol_Down Vol_up Mute_SW BL_SW DVSS V33O USBDP L5 D JP7 (N.C) 0 (N.C) 2 Power Circuit AVSS1