FT121Q-R FTDI, FT121Q-R Datasheet - Page 26

• Manufacturer Part Number: FT121Q-R
• Description: USB Interface IC USB CONTROLLER W/SPI SLAVE IC
• Manufacturer: FTDI

Specifications of FT121Q-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: QFN-16
• Minimum Operating Temperature: - 40 C

6.3.2 Select Endpoint
Command
Data
Table 6-13 Endpoint Status Register
6.3.3 Read Last Transaction Status
Command
Data
Table 6-14 Endpoint Last Transaction Status Register
Error Code
0000
0001
7-2
4-1
Bit
Bit
0
1
0
5
6
7
Full/Empty
Stall
Reserved
Data Receive/Transmit
Success
Error Code
Setup Packet
Data 0/1 Packet
Previous Status not
Read
: 00-05h (00-0Fh for Enhanced Mode)
: Read 1 byte
: 40-45h (40-4Fh for Enhanced Mode)
: Read 1 byte
Symbol
Symbol
Copyright © 2012 Future Technology Devices International Limited
Result
No error
PID encoding error
FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC
0b’xxxxxx
0b’0000
Reset
Reset
0
0
0
0
0
0
0: selected endpoint buffer is empty
1: selected endpoint buffer is full
0: selected endpoint is not stalled
1: selected endpoint is stalled
Reserved
0: indicate USB data receive or transmit not OK
1: indicate USB data receive or transmit OK
Refer to Table 6-15
0: indicate not a setup packet
1: indicate last received packet has a SETUP token
0: packet has a DATA0 token
1: packet has a DATA1 token
0: previous transaction status was read
1: previous transaction status was not read
Description
Description
Document No.: FT_000648
Clearance No.: FTDI#
Datasheet Version 1.0
312
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