32-bit OTP+Flash

32bit NX11M (=VLN1M) series SOP 8/16pins ( built-in flash memory)

요약32비트 MCU 기반 고음질 음성/MIDI 프로세서(DSP). OTP 를 내장해 양산 때 마스크가 필요 없어 최소 주문 수량(MOQ)과 리드타임을 줄일 수 있습니다. 플래시 4~32 Mb.

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

The NX11M (=VLN1M) 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.

Feature

The NX11M (=VLN1M) series consists of several derivatives with respect to ROM (OTP), RAM, I/O and functions. With memory-mapped architecture, the NX11M (=VLN1M) can address up to 16MB space that includes memory, register files, peripheral and SPI flash storage (including instruction/data modes). SBC (Sub-Band Coding) is achieved with greatly enhanced quality & much less memory size compared against traditional ADPCM coding due to the incorporation of efficient DSP algorithms as well as the upgrade of H/W spec. Via the high performance of 32-bit MCU, the S/W-based MIDI synthesizer can reach more than 16-ch polyphonic channels. All data including SBC / MIDI files, wavetable timbres, XIP codes and general user data, can be accessed from the external SPI flash.

• Wide Operating Voltage: 2.4V ~ 5.5V.
• 32-bit CPU core.
• Power management to support 4 operating modes: Normal / Slow / Standby / Halt mode. At Halt mode, the consumption current is less than 1uA.
• LVD (Low Voltage Detection): Total 6-level options: 3.6V, 3.4V, 3.2V, 2.6V, 2.4V, 2.2V.
• Timers (Timer0 / Timer1 / Timer2): Each Timer consists of divider and 16-bit down-counter with various clock sources.
• Two PWM Generators (PWMA / PWMB).
• Built-in MIC bias, 2-stage of pre-amplifiers and AGC/PGA for gain control.
• Built-in 14-bit DAC + 1.3-Watt Push-Pull power amplifier.
• SPI protocol
• RTC with 4KHz / 1KHz / 64Hz / 2Hz interrupts.
• Support OTP Security Lock to prevent OTP data from being read.
• S/W-based Speech/MIDI Codec.
• Noise filter @ 4x up-sampling.

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.)

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.)