UPD9971 datasheet(11/112 Pages) RENESAS

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µPD9971

Data Sheet S17455EJ2V0DS

1. FUNCTIONS

1.1 General Descriptions of Functions

(1) Power supply voltages

Digital I/O power supply:

1.7 to 3.3 V, 1.8 V TYP.

Analog power supply:

2.7 to 3.3 V, 3.0 V TYP.

Power supply for PLL:

2.7 to 3.3 V, 3.0 V TYP.

Power supply for regulators:

2.7 to 3.3 V, 3.0 V TYP.

(Digital power supply:

1.45 to 1.65 V, 1.54 V TYP.)

(2) Operating temperatures

−20 to +85°C

(3) Function blocks

Melody Core:

PCM sound generator core for 128 polyphonic

3D Positioning:

3D positioning surrounds function

Digital Mixing:

Digital mixing circuit

Regulator:

Regulator for digital power supply

PLL1/PLL2:

PLL for sound generator and PLL for audio

Audio DAC:

Stereo 16-bit audio DAC

Band gap:

Circuit generating reference voltage and current for analog circuits

VIB/LED:

Circuit generating control signals for vibration and LED

Master/Digital VR:

Volume circuit

1.2 General Descriptions of Circuits

Block

Functions

Melody Core

Up to 128 tones can be produced at the same time.

This block contains a PCM sound generator and a sequencer. The sampling frequency is 32 kHz.

3D Positioning

3D positioning surround function

Digital Mixing

Switching or adding sound generator output and audio serial input.

PLL

Generates master clocks for processing internal signals.

Input clocks: 3.84 MHz to 15.36 MHz

Audio DAC

16 bits

× 2 channels (L-ch and R-ch)

Sampling frequencies: 48 kHz, 44.1 kHz, 32 kHz, 16 kHz, and 8 kHz (Default: 32 kHz)

The interface supports the master and slave modes.

Dynamic range: 90 dBr TYP (for a single block)

Regulator

1.54 V output regulator for digital power supply

VIB/LED

Outputs control signals for VIB and LED.

Master/Digital VR

Master volume: 0 dB to

−45 dB/1.5 dB increments

Digital volume: +12 dB to

−63 dB/1 dB increments

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