Cypress CY7C67300 manual High-Speed Serial Interface, Programmable Pulse/PWM Interface

CY7C67300

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].

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

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].

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

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 11. PWM Interface Pins

Pin Name	Pin Number
PWM3	44
PWM2	53
PWM1	54
PWM0	55

Document #: 38-08015 Rev. *J Page 8 of 99

[+] Feedback