M66290AFP datasheet(18/54 Pages) RENESAS

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USB DEVICE CONTROLLER

M66290AGP/FP

MITSUBISHI <DIGITAL ASSP>

Reset

Function

Name

Bit

Name

Bit

00h

Write/Read "0"

EPB_RDY

[5:0]

Endpoint5-0 buffer

ready

interrupt

When buffer becomes ready (read/write enabled) to each endpoint,

the bit which corresponds to the number of endpoint changes to "1".

The factor of the interrupt is different by the transfer condition of each

endpoint.

1. As to EP0

This bit changes to "1" when receive buffer(OUT) became ready

(read enabled) in control write transfer.

If it is set to control write continuous receive mode or completed

receiving of the data of 255Bytes or received short data packet,

this bit changes to "1".

This bit is not changed even if the transmission buffer(IN) became

ready (write enabled) in control read transfer.

The ready state of the transmission buffer(IN) can be known by the

buffer empty interrupt.

2. As to EP1 to EP5, when CPU access

This bit changes to "1" when each buffer of each endpoint became

ready(read/write enabled).

This bit also changes to "1" when set the direction of the transfer to IN

in initialization.

3. As to EP1 to EP5, when DAM access

If the direction of the transfer is set to OUT, this bit changes to "1"

when received short data packet and then completed DMA transfer

of received data.

In this case, clear is only available to write the BCLR command.

This bit is not changed if the direction of transfer is set to IN.

Clearance of this flag is different by the transfer direction of endpoint.

1. If the transfer direction is OUT

After set the number of the object endpoint to the "FIFO Selection

flag is cleared.

(When DMA access, clearance is only available to write BCLR

command)

2. If the direction is IN

After set the number of the object endpoint to the "FIFO Selection

packet size (buffer size, if in continuous transmission mode ), then

flag is cleared.

Reserved

5 to 0

15 to 6

W/R

USB

S/W

H/W

EPB_RDY[5:0]

D10

D11

D12

D15

D13

D14

(2-6) Interrupt Status Register 1 (Address : 1Ah)

M66290AFP Datasheet(PDF) 18 Page - Renesas Technology Corp

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