32-bit Recording

NX13M (=VLN3M) series SOP 16pins ( built-in flash memory)

요약녹음·재생 계열. 32비트 MCU 기반 고음질 음성/MIDI 프로세서로, 기기에서 직접 녹음해 다시 들려주는 용도에 씁니다. 마스크가 필요 없어 최소 주문 수량과 리드타임을 줄일 수 있습니다.

32-bit MCU with Sub-Band Coding & 16-ch MIDI

The NX13M (=VLN3M) series is a 32-bit MCU based high-quality speech/MIDI processor, which is specially designed for customers to innovate with advanced DSP power. It is embedded with OTP (One Time PROM) for mass production, such that no mask is required while MOQ / Lead Time are kept minimized.

There are various useful features inside the NX13M (=VLN3M) series: Three sets of 16-bit Timers; 8-ch H/W PWM-IO pins, which provide complimentary outputs (with dead zone generator) and capture feature; 8-channel, 12-bit SAR ADC with MIC pre-amplifier & AGC / PGA that supports differential MIC input; 14-bit DAC + 1.3-watt Push-Pull power amplifier to drive speaker directly; independently configurable GPIO per pin with alternate functions; IR TX that supports 38KHz / 57KHz / 125KHz / 500KHz carrier for Infrared or QFID applications; SPI0 for SPI flash control, powered by embedded optional 3.3V / 1.8V LDO, which supports single/dual/quad I/O mode with XIP (eXecute In Place) capability; SPI1 for 2.4GHz RF module or other SPI devices; SDHC 2.0-compliant memory card; I2C H/W interface and UART TX / RX for serial communication.

Various package forms are available for the NX13M (=VLN3M) series: the innovative SOP-16 MCP (Multi-Chip Package), where SPI flash is stacked inside for applications that require small footprints.

Feature

• Wide Operating Voltage: 4V ~ 5.5V
• 32-bit CPU core
• Dual Clock Built-in oscillators for HI_CLK (32MHz) and LO_CLK (32.768KHz), accuracy trimmed to +/-0.5% for HI_CLK and +/-1.5% for LO_CLK.
• Power management to support 4 operating modes: Normal / Slow / Standby / Halt At Halt mode, the consumption current is less than 1uA.
• LVD (Low Voltage Detection): Total 6-level options: 6V, 3.4V, 3.2V, 2.6V, 2.4V, 2.2V.
• LVR (Low Voltage Reset): User-configurable, default values are 7V @ 32MHz for NX13M (=VLN3M), 2.4V @ 24MHz, 2.0V @ 16MHz, 1.8V @ 12MHz.
• Timers (Timer0 / Timer1 / Timer2): Each Timer consists of divider and 16-bit down-counter with various clock sources.
• Two PWM Generators (PWMA / PWMB)
• ADC (Analog Digital Conversion)
  • 8-ch (with auto scan mode), 12-bit resolution SAR (Successive Approximate Register)
  • Trigger by underflow of Timer0 /1 /2, or software
• Built-in MIC bias, 2-stage of pre-amplifiers and AGC/PGA for gain
• Built-in 14-bit DAC + 3-Watt Push-Pull power amplifier
• IR , SPI supported.
• RTC with 16KHz (or 4KHz) / 1KHz / 64Hz / 2Hz
• WDT (Watch-Dog Timer) supported with optional 188ms / 750ms
• MCP (Multi-Chip Package)
• Support OTP Security Lock to prevent OTP data from being
• S/W-based Speech/MIDI Codec & various algorithms
  • ADPCM Codec (Adaptive Differential PCM): 4-bit / 5-bit per
  • SBC Codec (Sub-Band Coding): 5K ~ 32Kbps with maximum bandwidth.

    16KHz

• CELP Decoder (Code-Excitation Linear Prediction): 8Kbps @ 8KHz SR for human voice only.
• MIDI: Up to 16-channel MIDI @ 32KHz Output Sample

Clock : PA2 ( Enable low 후 900usec 뒤에 clock 시작)
Data : PA3 ( Clock 상승 시 Data값 읽음)
Enable: PA4 ( Enable Low 되면 900usec 후에 Clock 시작)
Busy : PA5 ( 사운드 출력 동안 Low level )

Code 0 : STOP
Code1~1023 : Sound code
Code 1024~1039 : Volume code (Min. ~ Max.)