FT121T-R FTDI, FT121T-R Datasheet - Page 17

• 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

Table 6-1 FT121 default command set
Command Name
Read Buffer
Write Buffer
Set Endpoint Status
Acknowledge Setup
Clear Buffer
Validate Buffer
Read Current Frame Number
Send Resume
Command Name
Set Address Enable
Set Endpoint Enable
Set Mode
Set Interrupt
Set Endpoint Configuration
Copyright © 2012 Future Technology Devices International Limited
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
Target
Endpoint 2 IN
Selected Endpoint
Selected Endpoint
Endpoint 0 OUT
Endpoint 0 IN
Endpoint 1 OUT
Endpoint 1 IN
Endpoint 2 OUT
Endpoint 2 IN
Selected Endpoint
Selected Endpoint
Selected Endpoint
Device
Device
Target
Device
Device
Device
Device
Endpoint 0 OUT
Endpoint 0 IN
Endpoint 1 OUT
Endpoint 1 IN
Endpoint 2 OUT
Endpoint 2 IN
Initialization Commands
General Commands
Code (hex)
Code (hex)
D0h
D8h
B0h
B1h
B2h
B3h
B4h
B5h
85h
E0h
F0h
50h
51h
52h
53h
54h
55h
F1h
F2h
FAh
F5h
F6h
F3h
FBh
Document No.: FT_000648
Clearance No.: FTDI#
Data phase
Read 1 byte
Read multiple bytes
Write multiple bytes
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
None
None
None
Read 1 or 2 bytes
None
Data phase
Write 1 byte
Write 1 byte
Write 2 bytes
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Write 1 byte
Datasheet Version 1.0
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