FT122Q-R FTDI, FT122Q-R Datasheet - Page 26

• Manufacturer Part Number: FT122Q-R
• Description: USB Interface IC USB CONTROLLER W/ PARALLEL BUS IC
• Manufacturer: FTDI

Specifications of FT122Q-R

• Rohs: yes
• Product: USB 2.0
• Interface Type: Parallel
• Operating Supply Voltage: 1.65 V to 3.6 V, 4 V to 5.5 V
• Operating Supply Current: 3.9 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 40 C

Table 6-16 Transaction error code
6.3.4 Read Endpoint Status
Command
Data
Error Code
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1101
1111
1-0
4-3
Bit
2
5
6
Reserved
Setup packet
Reserved
Buffer 0 Full
Buffer 1 Full
: 80-85h (80-8Fh for Enhanced Mode)
: Read 1 byte
Symbol
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Result
PID unknown
Unexpected packet
Token CRC error
Data CRC error
Time out error
Reserved
Unexpected EOP
Packet NAKed
Sent stall
Buffer overflow
Bit stuff error
Wrong DATA PID
FT122 ENHANCED USB DEVICE CONTROLLER WITH PARALLEL
Reset
0b’00
0b’xx
0
0
0
Reserved
0: indicate not a setup packet
1: indicate last received packet has a SETUP token
Reserved
0: buffer 0 is not filled up
1: buffer 0 is filled up
0: buffer 1 is not filled up
1: buffer 1 is filled up
BUS
Description
Document No.: FT_000647
Clearance No.: FTDI#
IC
Datasheet Version 1.0
313
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