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FT121Q-R 数据表(PDF) 17 Page - Future Technology Devices International Ltd.

部件名 FT121Q-R
功能描述  Enhanced USB Device Controller with SPI Slave IC
PDF  46 Pages
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制造商  FTDI [Future Technology Devices International Ltd.]
网页  http://www.ftdichip.com
标志 FTDI - Future Technology Devices International Ltd.

FT121Q-R 数据表(HTML) 17 Page - Future Technology Devices International Ltd.

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Copyright © 2014 Future Technology Devices International Limited
17
Document No.: FT_000648
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
Datasheet Version 1.2
Clearance No.: FTDI#
312
6 Commands and Registers
The FT121 supports two command sets: a default command set (Table 6.1) and an enhanced command
set (Table 6.2). The enhanced command set is activated if any of the Set Endpoint Configuration
commands (0xB0-0xBF) are received by the FT121. Otherwise, the default command set shall be valid.
6.1 Command Summary
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
Data Flow Commands
Read Interrupt Register
Device
F4h
Read 2 bytes
Select Endpoint
Endpoint 0 OUT
00h
Read 1 byte (optional)
Endpoint 0 IN
01h
Read 1 byte (optional)
Endpoint 1 OUT
02h
Read 1 byte (optional)
Endpoint 1 IN
03h
Read 1 byte (optional)
Endpoint 2 OUT
04h
Read 1 byte (optional)
Endpoint 2 IN
05h
Read 1 byte (optional)
Read Last Transaction Status
Endpoint 0 OUT
40h
Read 1 byte
Endpoint 0 IN
41h
Read 1 byte
Endpoint 1 OUT
42h
Read 1 byte
Endpoint 1 IN
43h
Read 1 byte
Endpoint 2 OUT
44h
Read 1 byte
Endpoint 2 IN
45h
Read 1 byte
Read Endpoint Status
Endpoint 0 OUT
80h
Read 1 byte
Endpoint 0 IN
81h
Read 1 byte
Endpoint 1 OUT
82h
Read 1 byte
Endpoint 1 IN
83h
Read 1 byte
Endpoint 2 OUT
84h
Read 1 byte



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