LC823450XGEVK Low Power & HighResolution Audio Processing System LSI Evaluation Board www.onsemi.com User s Manual EVAL BOARD USERS MANUAL Overview LC823450XGEVK is an evaluation board for LC823450 Series (called LC823450 hereafter) which is a low power & high-resolution audio processing system LSI for portable sound solution. This users manual describes the features, design, and operation of the evaluation board. 9 7 16 Intended audience is customers who are building audio application using LC823450. 8 6 Key Features 10 16 5 File Transfer with Connecting PC by USB Standalone Music Playback with Hi-Resolution Audio Sound Recording with Noise Cancelling Music Streaming from Bluetooth Connected Device 4 1 3 Hands Free Talk with Bluetooth Connected Device 11 Audio Signal Transfer with Connecting PC by USB (UAC1.0) 2 Measurement of Current Consumption with Jumpers 13 Circuit Description Figure 1 shows some main parts on the picture of LC823450XGEVK. The part painted in blue is LC823450, and the parts drawn on the figure 14 15 are explained in this section. Figure2 shows the block diagram 12 describing simple connection between LC823450 and other parts on the evaluation board. There are power modules, I/O functions, audio 1 LC823450 9 Bluetooth 2 Audio CODEC 10 UART Connector functions, memories, Radio Frequency functions on the board. 3 USB Connector 11 Power Supply Control 4 Serial Flash 12 Digital Mic LC823450: 5 eMMC 13 Debugger Connector It is a low power & high-resolution audio processing system LSI 6 Switches 14 Headphone 7 microSD 15 Line Input which is a target to be evaluated, and it has Cortex -M3 Dual cores, 8 LCD 16 LEDs a LPDSP32, 1,656 kB internal SRAM for system, 256 kB ROM for Figure 1. Evaluation Board Picture Cortex-M3, 220 kB ROM for LPDSP32. Then, it has MP3 hard-wired encoder and decoder, some DSP Memory Audio functions like WMA, AAC, etc made by LPDSP32, D-Class AMP for Serial Digital-Mic Line microSD eMMC headphone, SD card I/F, USB2.0 Host and Device, timers, RTC, etc. Flash IN IN Radio LC823450XGEVK implements a WLP package of LC823450 with Frequency 24-bit 24 MHz Xtal. Head Bluetooth LC823450 CODEC Phone Power Supply Control: D-class AMP Output It has a power supply connector for AC adapter and the voltage level Power is DC 5 V. There are regulators in Power Area on LC823450XGEVK, Supply and all the power sources used in the evaluation board are made by the Switch USB LCD SWDIF UART Control Measurement regulators based on the DC 5 V, and they are delivered to all the power I/O terminals of all the parts in the evaluation board. Figure 2. Block Diagram of LC823450XGEVK Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: July, 2018 Rev. 3 EVBUM2339/DLC823450XGEVK Power terminals of LC823450 are connected through each jumper post to the power sources, so you can measure 1 2 the current consumption if you insert an ammeter to each 4 3 jumper post of the power terminals. 6 5 7 8 USB Connector: 10 9 It is a connector for USB, and it is used to connect the 12 11 evaluation board to a PC. If LC823450 is used as USB 13 14 device, you can work whole of LC823450XGEVK with 16 15 USB bus power supply as well without the AC adapter 18 17 connection. 19 20 UART Connector: The UART connector is a 7-way 2.54mm pitch Figure 4. Debugger Connector Pinout connector. It is a connector for UART, and it is used to connect to a PC or an external device. Also, it is used to debug firmware of LC823450 through terminal window on Table 2. DEBUGGER INTERFACE PINOUT PC. The UART connector pinout is shown in Figure 3 and Pin Signal Pin Signal UART interface pinout table is shown in Table 1. 1 Vdd2 2 Vdd2 1 3 10 k PU 4 GND 2 5 NC 6 GND 3 7 SWDIO 8 GND 4 9 SWDCLK 10 GND 5 11 10 k PD 12 GND 6 13 10 k PU 14 GND 7 15 nRST 16 GND Figure 3. UART Connector Pinout 17 NC 18 GND 19 10 k PD 20 GND Table 1. UART INTERFACE PINOUT In addition, there is no debugger connector which is JTAG Pin Signal Pin Signal interface for LPDSP on the evaluation board. 1 NC 2 GND Switches: 3 NC 4 VddSD2 There are some switches on the evaluation board. The 5 RXD0 6 TXD0 switch of SW1 is used to reset LC823450, and the switches 7 NC of SW2SW7 are used to operate audio control, for example, the volume control, playback control, mode control, etc. Debugger Connector On the other hand, there are 2 rotary switches of RSW1 The Debugger connector is a 20-way 2.54 mm pitch and RSW2 which are used to determine the boot mode of connector called ARM JTAG 20 connector as usual. It can LC823450. RSW1 is connected to BMODE0 on LC823450 be used in Serial Wire Debug (SWD) mode. and RSW2 is connected to BMODE1 on LC823450 The Debugger connector pinout is shown in Figure 4 and respectively. Debugger interface pinout table is shown in Table2. LC823450XGEVK can realize two types of boot and LC823450 supports Serial Wire Debug Port (SW-DP) update mode by setting BMODE0 and BMODE1. The one among three debugging ports which Cortex-M3 system is User Area Boot USB mode and the other is SPI Boot SD implements. The Serial Wire Data I/O pin (SWDIO) sends mode. Therefore, you should set RSW1 and RSW2 to select and receives serial data to and from LC823450 during boot and update mode as shown in Table 3 and Figure 5. In debugging. The Serial Wire Clock pin (SWDCLK) clocks User Area Boot USB mode, the user area of eMMC is used data into and out of LC823450 during debugging. The as the boot device and USB is used as the update device. System Reset pin (nRST) is used to fully reset LC823450. Then, the Initial Program Loader 2 (IPL2) and application This signal can be initiated by IDE or by SW1 on the board program are stored into eMMC, and LC823450 is booted (which is then detected by IDE). nRST is pulled HIGH on from eMMC. In SPI Boot SD mode, SPI Flash is used as the the board and pulled strong-LOW to initiate a reset. www.onsemi.com 2