FT121Q-R datasheet(16/46 Pages) FTDI

部件名	FT121Q-R

功能描述	Enhanced USB Device Controller with SPI Slave IC

PDF	46 Pages

Scroll/Zoom	100%

制造商	FTDI [Future Technology Devices International Ltd.]

网页	http://www.ftdichip.com

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16 / 46 page

Document No.: FT_000648

FT121 ENHANCED USB DEVICE CONTROLLER WITH SPI SLAVE IC

Datasheet Version 1.2

Clearance No.: FTDI#

312

The endpoint buffer configurations, settable using the Set Endpoint Configuration command, are as

follows:

Endpoint buffer size register setting (0b’)

Non-isochronous endpoint Isochronous endpoint

0000

8 bytes

16 bytes

0001

16 bytes

32 bytes

0010

32 bytes

48 bytes

0011

64 bytes

0100

96 bytes

0101

128 bytes

0110

160 bytes

0111

192 bytes

1000

256 bytes

1001

320 bytes

1010

384 bytes

1011

504 bytes

1100-1111

Table 5.4 Endpoint Maximum Packet Size

Note: 504 is the maximum byte count as there are 1024 bytes in total and 8 bytes IN and OUT packets

for control endpoint 0 must always be reserved.

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