GPCE2P064B datasheet(13/25 Pages) GENERALPLUS

13 / 25 page

GPCE2P064B

Proprietary & Confidential

Apr. 07, 2015

Version: 1.2

Digital Converter).

The function of an ADC is to convert analog

signal to digital signal, e.g. a voltage level into a digital word.

The four channels of ADC can be four channels of line-in from

IOB [3:0] or one channel microphone (MIC) input through

amplifier PGA controller, and AGC controller.

The MIC amplifier

circuit is capable of reducing common mode noise by transmitting

signals through differential MIC Inputs (MICN, MICP).

Moreover,

an external resistor can be applied to adjust microphone gain and

time of AGC operating.

The AD needs to select source of line-in

before conversion.

The ADC take pad(VDD_ADC) as voltage

reference.

6.14 SPI

Serial

Peripheral

Interface

(SPI)

controller

built

GPCE2P064B to facilitate communicating with other devices and

components.

There are four control signals on SPI - SPICS

(IOA12), SPICK (IOA13), SDO (IOA14), and SDI (IOA15).

6.15 Audio Algorithm

The following speech types can be used in GPCE2P064B: PCM,

SACM_S200,

SACM_S480,

SACM_S530,

SACM_A1600,

SACM_A1601, SACM_A1800, SACM_A3400pro, SACM_A3600,

SACM_DVR520,

SACM_DVR1600,

SACM_DVR1800,

SACM_DVR3200, and SACM_DVR4800.

For melody synthesis,

the

GPCE2P064B

supports

SACM_MS01

(FM)

and

SACM_MS02 (wave-table) synthesizers.

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