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FT121Q-R Datasheet(PDF) 18 Page - Future Technology Devices International Ltd.

Part # FT121Q-R
Description  Enhanced USB Device Controller with SPI Slave IC
PDF  46 Pages
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Manufacturer  FTDI [Future Technology Devices International Ltd.]
Direct Link  http://www.ftdichip.com
Logo FTDI - Future Technology Devices International Ltd.

FT121Q-R Datasheet(HTML) 18 Page - Future Technology Devices International Ltd.

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Copyright © 2014 Future Technology Devices International Limited
18
Document No.: FT_000648
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
Datasheet Version 1.2
Clearance No.: FTDI#
312
Command Name
Target
Code (hex)
Data phase
Endpoint 2 IN
85h
Read 1 byte
Read Buffer
Selected Endpoint
E0h
Read multiple bytes
Write Buffer
Selected Endpoint
F0h
Write multiple bytes
Set Endpoint Status
Endpoint 0 OUT
50h
Write 1 byte
Endpoint 0 IN
51h
Write 1 byte
Endpoint 1 OUT
52h
Write 1 byte
Endpoint 1 IN
53h
Write 1 byte
Endpoint 2 OUT
54h
Write 1 byte
Endpoint 2 IN
55h
Write 1 byte
Acknowledge Setup
Selected Endpoint
F1h
None
Clear Buffer
Selected Endpoint
F2h
None
Validate Buffer
Selected Endpoint
FAh
None
General Commands
Read Current Frame Number
Device
F5h
Read 1 or 2 bytes
Send Resume
Device
F6h
None
Table 6.1 FT121 default command set
Command Name
Target
Code (hex)
Data phase
Initialization Commands
Set Address Enable
Device
D0h
Write 1 byte
Set Endpoint Enable
Device
D8h
Write 1 byte
Set Mode
Device
F3h
Write 2 bytes
Set Interrupt
Device
FBh
Write 1 byte
Set Endpoint Configuration
Endpoint 0 OUT
B0h
Write 1 byte
Endpoint 0 IN
B1h
Write 1 byte
Endpoint 1 OUT
B2h
Write 1 byte
Endpoint 1 IN
B3h
Write 1 byte
Endpoint 2 OUT
B4h
Write 1 byte
Endpoint 2 IN
B5h
Write 1 byte



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