GPL16258VB datasheet(13/23 Pages) GENERALPLUS

13 / 23 page

GPL16258VB

Proprietary & Confidential

Nov. 24, 2016

Version: 1.0

5.12. Watchdog

The purpose of watchdog is to monitor if the system operates

normally.

Within a specific period, watchdog must be cleared.

not, CPU assumes that the program has been running in an

abnormal condition.

As a result, the CPU will reset the system to

the initial state and start running the program all over again.

GPL16258VB, the clear period is software programmable.

watchdog is cleared before expiration, the system will not be reset.

5.13. Serial Interface

5.13.1. Serial Peripheral Interface (SPI)

The SPI interface is a master 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.

MSB

LSB

SCLK

SFRM

SSPTXD

SSPOE

8 bits

MSB

LSB

SSPRXD

SPO = 0, SPH = 0

MSB

LSB

SCLK

SFRM

SSPTXD

SSPOE

8 bits

MSB

LSB

SSPRXD

SPO = 0, SPH = 1

MSB

LSB

SCLK

SFRM

SSPTXD

SSPOE

8 bits

MSB

LSB

SSPRXD

SPO = 1, SPH = 0

MSB

SCLK

SFRM

SSPTXD

SSPOE

8 bits

MSB

LSB

SSPRXD

LSB

SPO = 1, SPH = 1

5.13.2. USB Device Function

GPL16258VB provides USB device function which is compatible

with USB 1.1 and USB 2.0 full speed standard.

An USB

transceiver is built-in for devices function.

A FIFO with size of

128x8 is used for bulk-in and bulk-out transfer and an 8-byte FIFO

is used for pipe transferring control.

Interrupt IN/OUT pipes are

also supported.

The DMA transferring is enabled for bulk-in/out

to maximize the transfer performance.

5.14. IDE Tools Function

The functions of IDE include the follows:

1). C compiler, Assembly and Linker

2). Single step trace

3). Break point (break point for debugging)

4). Run (execute)

5.15. SD/MMC Controller

GPL16258VB provides SD/MMC controllers which is compatible

with MMC system specification version 2.3 and SD Memory Card

specification 1.1.

The controller supports automatically CRC

generation and check, 1-bit and 4-bit transfer, interrupt generation

when buffer empty/full, DMA transfer for page read/write.

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