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FT121Q-R 数据表(PDF) 25 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) 25 Page - Future Technology Devices International Ltd.

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Copyright © 2014 Future Technology Devices International Limited
25
Document No.: FT_000648
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
Datasheet Version 1.2
Clearance No.: FTDI#
312
6.3 Data Flow Commands
6.3.1 Read Interrupt Register
Command
: F4h
Data
: Read 1 or 2 bytes (Default Mode); Read 1-4 bytes (Enhanced Mode)
Bit
Symbol
Reset
Description
0
Endpoint 0 Out
0
Interrupt for endpoint 0 OUT buffer. Cleared by Read
Last Transaction Status command.
1
Endpoint 0 In
0
Interrupt for endpoint 0 IN buffer. Cleared by Read Last
Transaction Status command.
2
Endpoint 1 Out
0
Interrupt for endpoint 1 OUT buffer. Cleared by Read
Last Transaction Status command.
3
Endpoint 1 In
0
Interrupt for endpoint 1 IN buffer. Cleared by Read Last
Transaction Status command.
4
Endpoint 2 Out
0
Interrupt for endpoint 2 OUT buffer. Cleared by Read
Last Transaction Status command.
5
Endpoint 2 In
0
Interrupt for endpoint 2 IN buffer. Cleared by Read Last
Transaction Status command.
6
Bus Reset
0
Interrupt for bus reset. This bit will be cleared after
reading.
7
Suspend Change
0
Interrupt for USB bus suspend status change. This bit
will be set to ‘1’ when FT121 goes to suspend (missing 3
continuous SOFs) or resumes from suspend. This bit will
be cleared after reading.
Table 6.9 Interrupt Register Byte 1
Bit
Symbol
Reset
Description
7-0
Reserved
00h
Reserved
Table 6.10 Interrupt Register Byte 2
Bit
Symbol
Reset
Description
0
Endpoint 3 Out
0
Interrupt for endpoint 3 OUT buffer. Cleared by Read
Last Transaction Status command.
1
Endpoint 3 In
0
Interrupt for endpoint 3 IN buffer. Cleared by Read Last
Transaction Status command.
2
Endpoint 4 Out
0
Interrupt for endpoint 4 OUT buffer. Cleared by Read
Last Transaction Status command.
3
Endpoint 4 In
0
Interrupt for endpoint 4 IN buffer. Cleared by Read Last
Transaction Status command.



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