M66290AFP datasheet(28/54 Pages) RENESAS

28 / 54 page

USB DEVICE CONTROLLER

M66290AGP/FP

MITSUBISHI <DIGITAL ASSP>

Reset

Function

Name

Bit

Name

Bit

W/R

Buffer clear

If "1" is written into this bit When the selected endpoint is set to IN, IN

buffer effective state flag and the data (byte) which is written are cleared.

If IVAL="1" and BCLR="1" is written at the same time, data is cleared

but IN buffer effective state flag is set.(This is effective to transmit 0

length data)

When "1" is written into this bit, if the selected endpoint is set to OUT,

OUT buffer effective state flag is cleared and read data is also cleared.

When "0" is written, this bit is not changed.

If this bit is "0", access to EP0_FIFO data register is enabled.

And when this bit is "0", IVAL and ODLN bit shows the effective value.

EP0_FIFO data register, when read or write, needs cycle time of

200ns (min).

(Continuous access at 5MHz is available)

EP0_FIFO ready

E0req

BCLR

IVAL

EP0_PID

[1:0]

If the control read buffer is selected, this becomes IN buffer

effective state flag.

When set to "1", it becomes to transmit data set state (SIE read enabled).

If data is written which exceeds to the maximum byte of maximum

packet size (MXPS), this bit is set to "1".

When short packet transmit, set this bit to "1" after wrote transmit data.

If the IVAL="1" and BCLR="1" is written at the same time,

IN buffer effective state flag is set.

(This is effective to transmit 0 length data)

If the control readout) buffer is selected, it becomes OUT buffer

effective state status.

Status "1" shows that there is data which can be read.

This bit shows the effective value when E0req bit is "0".

If "1" is written, it is not changed.

If "0" is written, flag is not changed.

In buffer status

Setting the response PID.

00 : NAK Whatever the buffer state is,do NAK handshake.

01 : BUF Response PID is selected by the state of buffer

and sequence toggle bit status.

(One of ACK, NAK, and DATA0/DATA1)

1x : STALL Do STALL handshake

1. When received Setup packet, turns to "00"(=NAK) automatically.

2. When received request (Set_Address, etc.) which is set to

automatic response, turns to "01"(=ACK) automatically after

completed the Setup transaction.

3. If sequence error occurred in control transfer,or received data

in control write transfer which exceed maximum packet size,

this turns to "1x"(=STALL) automatically.

Response PID

15 to 14

W/R

USB

S/W

H/W

CCPL

EP0_PID[1:0]

E0req

BCLR

IVAL

ODLN[7:0]

D10

D11

D12

D15

D13

D14

(3-9) EP0_FIFO Control Register (Address : 32h)

M66290AFP Datasheet(PDF) 28 Page - Renesas Technology Corp

M66290AFP Datasheet(HTML) 28 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

Datasheet Download

Link URL