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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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GPL16258VB датащи(PDF) 13 Page - Generalplus Technology Inc. |
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GPL16258VB датащи(HTML) 13 Page - Generalplus Technology Inc. |
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13 / 23 page  GPL16258VB © Generalplus Technology Inc. Proprietary & Confidential 13 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. If 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. In GPL16258VB, the clear period is software programmable. If 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 Q SPO = 0, SPH = 0 MSB LSB SCLK SFRM SSPTXD SSPOE 8 bits MSB LSB SSPRXD Q Q SPO = 0, SPH = 1 MSB LSB SCLK SFRM SSPTXD SSPOE 8 bits MSB LSB SSPRXD Q SPO = 1, SPH = 0 MSB SCLK SFRM SSPTXD SSPOE 8 bits MSB LSB SSPRXD Q Q 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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