M66290AFP datasheet(22/54 Pages) RENESAS

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USB DEVICE CONTROLLER

M66290AGP/FP

MITSUBISHI <DIGITAL ASSP>

Setup token

OUT token

IN token

Data packet

Null data packet

NAK

Data packet

NAK

ACK

NAK

ACK

Setup

stage

Data

stage

Status

stage

INT1

INT1:

CTRT interrupt (setup stage completion)

Read EP0 request and conf irm the contents of request.

INT2

INT2:

CTRT interrupt (control write transf er status stage shif t)

Conf irm the number of by te of receiv ed data and read

the receiv ed data.

By receiv ing SETUP token packet, response PID of

EP0 is set to NAK automatically.

By the set of response PID to BUF (buff er control),

data receiv e starts.

By the set of CCPL, transmit the Null data.

Interrupt, which is occurred by control write transf er

status stage shif t and by control transf er completion is

diff erent by interrupt enable setting.

(1) Continuous receive mode (control write transfer)

Setup token

IN token

Data packet

Null data packet

Data packet

ACK

NAK

ACK

Setup

stage

Data

stage

Status

stage

INT1

INT1:

CTRT interrupt (setup stage completion)

Read EP0 request and conf irm the contents of request.

By receiv ing SETUP token packet, response PID of

EP0 is set to NAK automatically.

(2) Continuous transmit mode (control read transfer)

OUT token

Data packet

IN token

ACK

Executes transmit data write which is requested,

set transmit data length, set response PID to BUF

(buff er control), and data transmit is started.

By the set of CCPL, ACK handshake is executed

when receiv ed Null data.

Interrupt which is occurred by control read transf er

status stage shif t and by control transf er completion is

diff erent by interrupt enable setting.

Auto-response control function

M66290A has auto-response f unction to dev ice

state transition request (Set Address and Set

Conf iguration)in control transf er.

By the set of "Auto-response Control Register",

auto-response mode to Set Address and to

Set Conf iguration can be set indiv idually.

If the auto-response mode is set, dev ice state

transition request can be ended without occurring

interrupt.

Transf er direction of packet :

Host to M66290A

M66290A to Host

Continuous transfer function

M66290A has continuous transf er f unction to

transmit/receiv e continuously of requested data

which extend plural of transaction.

If continuous transf er mode is set, it can transf er the

transmit which data length is set to "EP0 Continuous

Transmit Data Length Register", without

occurring interrupt.

Control read buff er can be set up to 256By tes at a unit

of 64By tes. Control write buff er can receiv e continuously

up to 255By tes, so secure the area of 256By tes.

Abstract of control transfer operations

Figure 4. shows examples of abstraction of control

transf er operations.

Figure 4. Examples of abstract of control transf er operations

M66290AFP Datasheet(PDF) 22 Page - Renesas Technology Corp

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