FT311D-32L1C-R datasheet(16/40 Pages) FTDI

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DS_FT311D

USB ANDROID HOST IC Datasheet

Version 1.2

Document No.: FT_000660 Clearance No.: FTDI# 305

Mode

CPOL CPHA

Table 5.3

- Clock Phase/Polarity Modes

Figure 5-5 - SPI CPOL CPHA Function

5.5.2 Serial Peripheral Interface – Slave

External - SPI Master

FT311 - SPI Slave

CLK

SS#

MISO

MOSI

Figure 5-6 SPI Slave block diagram

FT311D has an SPI Slave module that uses four wire interfaces: MOSI, MISO, CLK and SS#. An SPI

transfer can only be initiated by the SPI Master and begins with the slave select signal being asserted.

This is followed by a data byte being clocked out with the master supplying CLK. The master always

supplies the first byte, which is called a command byte. After this the desired number of data bytes are

transferred before the transaction is terminated by the master de-asserting slave select. An SPI Master is

able to abort a transfer at any time by de-asserting its SS# output. This will cause the Slave to end its

current transfer and return to idle state.

FT311D-32L1C-R bảng dữ liệu(PDF) 16 Page - Future Technology Devices International Ltd.