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CY4640 Datasheet(PDF) 9 Page - Cypress Semiconductor |
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CY4640 Datasheet(HTML) 9 Page - Cypress Semiconductor |
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9 / 112 page  CY7C67300 Document Number: 38-08015 Rev. *L Page 9 of 112 SPI Pins The SPI port has a few different pin location options as shown in Table 9. The port location is selectable via the GPIO control register [0xC006]. High-Speed Serial Interface EZ-Host provides an HSS interface. The HSS interface is a programmable serial connection with baud rate from 9600 baud to 2.0M baud. The HSS interface supports both byte and block mode operations and also hardware and software handshaking. Complete control of EZ-Host can be accomplished through this interface via an extensible API and communication protocol. The HSS interface can be exposed through GPIO pins or the External Memory port. HSS Features ■ 8 bits, no parity code ■ Programmable baud rate from 9600 baud to 2M baud ■ Selectable 1- or 2-stop bit on transmit ■ Programmable inter-character gap timing for Block Transmit ■ 8-byte receive FIFO ■ Glitch filter on receive ■ Block mode transfer directly to/from EZ-Host internal memory (DMA transfer) ■ Selectable CTS/RTS hardware signal handshake protocol ■ Selectable XON/XOFF software handshake protocol ■ Programmable Receive interrupt, Block Transfer Done inter- rupts ■ Complete access to internal memory HSS Pins The HSS port has a few different pin location options as shown in Table 10. The port location is selectable via the GPIO control register [0xC006]. Programmable Pulse/PWM Interface EZ-Host has four built in PWM output channels. Each channel provides a programmable timing generator sequence that can be used to interface to various image sensors or other applications. The PWM interface is exposed through GPIO pins. Programmable Pulse/PWM Features ■ Four independent programmable waveform generators ■ Programmable predefined frequencies ranging from 5.90 KHz to 48 MHz ■ Configurable polarity ■ Continuous and one-shot mode available Programmable Pulse/PWM Pins. Table 9. SPI Interface Pins Pin Name Pin Number Default Location nSSI 56 or 65 SCK 61 MOSI 60 MISO 66 Alternate Location nSSI 73 SCK 72 MOSI 71 MISO 74 Table 10. HSS Interface Pins Pin Name Pin Number Default Location CTS 44 RTS 53 RXD 54 TXD 55 Alternate Location CTS 67 RTS 68 RXD 69 TXD 70 Table 11. PWM Interface Pins Pin Name Pin Number PWM3 44 PWM2 53 PWM1 54 PWM0 55 |
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