FT121Q-R datasheet(28/46 Pages) FTDI

Part #	FT121Q-R

Description	Enhanced USB Device Controller with SPI Slave IC

PDF	46 Pages

Scroll/Zoom	100%

Manufacturer	FTDI [Future Technology Devices International Ltd.]

Direct Link	http://www.ftdichip.com

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28 / 46 page

Document No.: FT_000648

FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC

Datasheet Version 1.2

Clearance No.: FTDI#

312

Error Code

Result

0010

PID unknown

0011

Unexpected packet

0100

Token CRC error

0101

Data CRC error

0110

Time out error

0111

Reserved

1000

Unexpected EOP

1001

Packet NAKed

1010

Sent stall

1011

Buffer overflow

1101

Bit stuff error

1111

Wrong DATA PID

Table 6.15 Transaction error code

6.3.4 Read Endpoint Status

Command

: 80-85h (80-8Fh for Enhanced Mode)

Data

: Read 1 byte

Bit

Symbol

Reset

Description

1-0

Reserved

0b’00

Reserved

Setup packet

0: indicate not a setup packet

1: indicate last received packet has a SETUP token

4-3

Reserved

0b’xx

Reserved

Buffer 0 Full

0: buffer 0 is not filled up

1: buffer 0 is filled up

Buffer 1 Full

0: buffer 1 is not filled up

1: buffer 1 is filled up

FT121Q-R Datasheet(PDF) 28 Page - Future Technology Devices International Ltd.

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