DS_FT311D USB ANDROID HOST IC Datasheet
Version 1.2
Document No.: FT_000660 Clearance No.: FTDI# 305
number of data bytes are transferred before the transaction is terminated by the master de-asserting
slave select. However the FT311D is simply a data pipe and no command is required by the FT311D itself.
Any command protocol would be defined by the Android application.
The SPI Master will transmit on MOSI as well as receive on MISO during every data stage.
Figure 5-9 Typical SPI Master Timing and Table 5.6 SPI Master Timing show an example of this.
Figure 5-9 Typical SPI Master Timing
Time
t1
Description
SCLK period
Minimum
39.68
Typical
41.67
20.84
20.84
Maximum
Unit
ns
t2
SCLK high period
SCLK low period
19.84
21.93
21.93
ns
t3
19.84
ns
SCLK driving edge to
MOSI/SS
t4
t5
t6
ns
ns
ns
-1.5
3
MISO setup time to sample
SCLK edge
6.5
MISO hold time from sample
SCLK edge
0
Table 5.6 SPI Master Timing
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