ML60852 datasheet(2/81 Pages) OKI

2 / 81 page

PEDL60852-01

1Semiconductor

ML60852

2/81

Endpoints and FIFOs

In the ML60852, it is possible to select by making appropriate register setting either the 5EP mode in which there

are five end points or the 6EP mode in which there are six end points. Although the transfer mode that can be used

by EP0 is fixed, it is possible to select either the bulk transfer mode or the interrupt transfer mode for the end points

EP1, EP2, and EP3, and one of the modes of isochronous, bulk, or interrupt transfer can be selected for EP4 and

EP5. In addition, it is possible to selectively set the direction of data transfer for EP1 to EP5.

5EP Mode

6EP Mode

End

point

FIFO

Capacity

Transfer

mode

Remarks

FIFO

Capacity

Transfer

mode

Remarks

EP0

Reception 32

Transmission 32

Control transfer

Reception 32

Transmission 32

Control transfer

EP1

64x2

Bulk/interrupt transfer

(IN/OUT)

DMA

Possible

64x2

Bulk/interrupt transfer

(IN/OUT)

DMA

Possible

EP2

64x2

Bulk/interrupt transfer

(IN/OUT)

DMA

Possible

64x2

Bulk/interrupt transfer

(IN/OUT)

DMA

Possible

EP3

Bulk/interrupt transfer

(IN/OUT)

Bulk/interrupt transfer

(IN/OUT)

EP4

512x2

(64x2)

Isochronous/bulk/

interrupt transfer

(IN/OUT)

DMA

Possible

256x2 (64x2)

Isochronous/bulk/

interrupt transfer

(IN/OUT)

DMA

Possible

EP5

—

256x2 (64x2)

Isochronous/bulk/

interrupt transfer

(IN/OUT)

DMA

Possible

FIFO Capacity: The unit is bytes.

Note 1: The selection between the 5EP mode and the 6EP mode is made by bit D2 of the register

SYSCON.

Note 2: EP3 permits rate feedback data sequence toggling.

Note 3: EP1, EP2, and EP3 are all mutually independent, and can be assigned for bulk transfer or

interrupt transfer individually. It is possible to set the maximum packet size up to 64 bytes (32

bytes for EP3) during both bulk transfer and interrupt transfer.

Note 4: It is possible to set EP4 and EP5 to one of the modes of isochronous transfer, bulk transfer, and

interrupt transfer. The maximum packet size can be up to 64 bytes when these end points are set

to bulk transfer.

Note 5: When using EP4 and EP5 in the isochronous transfer mode:

In the 5EP mode, the maximum packet size of EP4 is 512 bytes. EP5 cannot be used.

In the 6EP mode, the maximum packet size of both EP4 and EP5 is 256 bytes.

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