2 Device Overview
The IS2083BM uses a single-cycle 8-bit 8051 MCU core connected to the system components via an MCU system bus. The MCU system bus provides interface memory map address decode for the Read Only Memory (ROM), Static Random Access Memory (SRAM), and peripherals.
IS2083BM contains the following major blocks:
- Bluetooth Link Controller (BTLC) – Bluetooth clock, task scheduler, and Bluetooth hopping
- Bluetooth modulator-demodulator (modem) – TX/RX baseband and RF
- DSP audio subsystem – DSP with audio codec
- Program ROM Memory
- Bluetooth DMA – Common Memory Access
- Power Management Unit (PMU)
- Clock/Reset – Low power logic
The IS2083BM device variants are:
- IS2083BM variant supports analog output from the internal DAC
- IS2083BM-2L2 variant supports LDAC and does not support analog output
The following table provides the features of IS2083BM SoC variants.
| Features | IS2083BM | IS2083BM-2L2 |
|---|---|---|
| Application |
| Headset/Speaker |
| Memory | Flash | Flash |
| Stereo/Concert mode | Yes | Yes |
| Package | BGA | BGA |
| Pin/Ball count | 82 | 82 |
| Dimensions | 5.5 mm x 5.5 mm | 5.5 mm x 5.5 mm |
| Audio DAC output | 2 channel | — |
| DAC (single-ended) SNR | 95 dB | — |
| DAC (cap-less) SNR | 95 dB | — |
| ADC SNR at 1.8V | -88 dB | -88 dB |
| I2S audio input | Yes | Yes |
| I2S digital output | Yes | Yes |
| MCLK output | Yes | Yes |
| Analog output | Yes | — |
| Analog Line-In | Yes | Yes |
| Analog microphone | 2 channel | 2 channel |
| Digital microphone | 2 channel | 2 channel |
| External audio amplifier interface | Yes | Yes |
| UART with hardware flow control | 1 | 1 |
| USB (Full-speed USB 1.1 interface and battery charging) | Yes | Yes |
| I2C | 1 | 1 |
| PWM | 1 channel | 1 channel |
| LED driver | 2 | 2 |
| Battery charger (350 mA maximum) | Yes | Yes |
| ADC for battery voltage and temperature monitoring | Yes | Yes |
| GPIO | Up to 19 | Up to 19 |
| Multitone | Yes | Yes |
| Integrated MPA and LPA | Yes | Yes |