FT120T-R datasheet(14/40 Pages) FTDI

14 / 40 page

Document No.: FT_000646

FT120 USB DEVICE CONTROLLER WITH PARALLEL BUS IC

Datasheet Version 1.2

Clearance No.: FTDI#

291

Command Name

Target

Code (hex)

Data phase

Endpoint 2 IN

85h

Read 1 byte

Read Buffer

Selected Endpoint

F0h

Read multiple bytes

Write Buffer

Selected Endpoint

F0h

Write multiple bytes

Set Endpoint Status

Endpoint 0 OUT

40h

Write 1 byte

Endpoint 0 IN

41h

Write 1 byte

Endpoint 1 OUT

42h

Write 1 byte

Endpoint 1 IN

43h

Write 1 byte

Endpoint 2 OUT

44h

Write 1 byte

Endpoint 2 IN

45h

Write 1 byte

Acknowledge Setup

Selected Endpoint

F1h

None

Clear Buffer

Selected Endpoint

F2h

None

Validate Buffer

Selected Endpoint

FAh

None

General Commands

Read Current Frame Number

Device

F5h

Read 1 or 2 bytes

Send Resume

Device

F6h

None

Table 6-1 FT120 command set

6.2 Initialization Commands

6.2.1 Set Address Enable

Command

: D0h

Data

: Write 1 byte

Bit

Symbol

Reset

Description

6-0

Address

0b’0000000 USB assigned device address. A bus reset will reset all

address bits to 0.

Enable

Function enable. A bus reset will automatically enable the

function at default address 0.

Table 6-2 Address Enable Register

6.2.2 Set Endpoint Enable

Command

: D8h

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