GPDS207A データシートの表示（PDF） - Unspecified

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コンポーネント説明

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GPDS207A

Audio Decoder with Card Reader

Unspecified 

Preliminary

GPDS207A/GPDS208A

5.8. Serial Interface

5.8.1. Serial Peripheral Interface (SPI)

The SPI interface is a master/slave interface that enables

synchronous serial communication with slave/master peripherals.

Two 8-byte FIFOs are used for transmitting and receiving data.

Four types of timing are supported and shown in the following

diagram.

SCLK

SFRM

SSPRXD

MSB

LSB Q

SSPTXD

MSB

SSPOE

LSB

8 bits

SPO = 0, SPH = 0, only this mode is supported in SPI slave mode.

SCLK

SFRM

SSPRXD

Q MSB

SSPTXD

MSB

SSPOE

8 bits

LSB Q

LSB

SCLK

SFRM

SSPRXD

Q MSB

LSB Q

SSPTXD

MSB

LSB

8 bits

SSPOE

SPO = 1, SPH = 1

5.8.2. USB Mini-host/Device Function

GPDS207A/ GPDS208A provides both USB mini-host and device

function which is compatible with USB 1.1 and USB 2.0 full speed

standard. The mini-host and device function are not allowed to

be activated concurrently. An USB transceiver is built-in for both

host and devices function. A FIFO with size of 128x8 is used for

bulk-in and bulk-out transfer and an 8-bytes FIFO is used for

controlling pipe-transfer. Interrupt pipe is also supported. The

DMA transfer is enabled for bulk-in and bulk-out to maximize the

transfer performance.

5.8.3. I2C Function

GPDS207A/ GPDS208A provides an I2C controller which supports

master read/write transfer, slave read/write transfer and 7-bit

address mode. Multi-master mode is also supported. The

following diagram shows the I2C bus read/write timing.

SPO = 0, SPH = 1

SCLK

SFRM

SSPRXD

MSB

SSPTXD

MSB

SSPOE

8 bits

SPO = 1, SPH = 0

© Generalplus Technology Inc.

Proprietary & Confidential

LSB Q

LSB

5.9. SD/MMC Controller

GPDS207A/ GPDS208A features a SD/MMC controller which is

compatible with MMC system specification version 2.3 and SD

9

MAY 14, 2009

Preliminary Version: 0.1

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