FT121T-R FTDI, FT121T-R Datasheet - Page 24

• Manufacturer Part Number: FT121T-R
• Description: USB Interface IC USB CONTROLLER W/SPI SLAVE IC
• Manufacturer: FTDI

Specifications of FT121T-R

• Rohs: yes
• Product: USB 2.0
• Interface Type: SPI, USB
• Operating Supply Voltage: 4 V to 5.5 V
• Operating Supply Current: 3.9 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-16
• Minimum Operating Temperature: - 40 C

6.3
6.3.1 Read Interrupt Register
Command
Data
Table 6-9 Interrupt Register Byte 1
Table 6-10 Interrupt Register Byte 2
7-0
Bit
Bit
Bit
0
1
2
3
4
5
6
7
0
1
2
3
Data Flow Commands
Endpoint 0 Out
Endpoint 0 In
Endpoint 1 Out
Endpoint 1 In
Endpoint 2 Out
Endpoint 2 In
Bus Reset
Suspend Change
Reserved
Endpoint 3 Out
Endpoint 3 In
Endpoint 4 Out
Endpoint 4 In
: F4h
: Read 1 or 2 bytes (Default Mode); Read 1-4 bytes (Enhanced Mode)
Symbol
Symbol
Symbol
Copyright © 2012 Future Technology Devices International Limited
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
Reset
Reset
Reset
00h
0
0
0
0
0
0
0
0
0
0
0
0
Interrupt for endpoint 0 OUT buffer. Cleared by Read
Last Transaction Status command.
Interrupt for endpoint 0 IN buffer. Cleared by Read Last
Transaction Status command.
Interrupt for endpoint 1 OUT buffer. Cleared by Read
Last Transaction Status command.
Interrupt for endpoint 1 IN buffer. Cleared by Read Last
Transaction Status command.
Interrupt for endpoint 2 OUT buffer. Cleared by Read
Last Transaction Status command.
Interrupt for endpoint 2 IN buffer. Cleared by Read Last
Transaction Status command.
Interrupt for bus reset. This bit will be cleared after
reading.
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.
Reserved
Interrupt for endpoint 3 OUT buffer. Cleared by Read
Last Transaction Status command.
Interrupt for endpoint 3 IN buffer. Cleared by Read Last
Transaction Status command.
Interrupt for endpoint 4 OUT buffer. Cleared by Read
Last Transaction Status command.
Interrupt for endpoint 4 IN buffer. Cleared by Read Last
Transaction Status command.
Description
Description
Description
Document No.: FT_000648
Clearance No.: FTDI#
Datasheet Version 1.0
312
24