Table of Contents
Advertisement
MB90335 Series
EPEN
0
1
[bit14, bit13] TYPE: End point forwarding type selection bits
The forwarding type supported by the end point is specified.
TYPE
00
01
10
11
Note:
In Isochronous transfer of USB 2.0, the following item was added to the specification. Initial setting:
Alternate value 0 and Maximum number of packets 0. For USB function of this series, if the Alternate
value is set to the number other than 0, STALL response is given to Host automatically and the
Alternate value cannot be changed. Therefore, maximum number of packets cannot be set by changing
the Alternate value.
[bit12] DIR: End point forwarding direction selection bit
It specifies a transfer direction that the end point supports.
DIR
0
1
[bit11] DMAE: DMA automatic transfer enable bit
It is a mode setting that uses DMA for read and write operations to transmit and receive buffers for
transfer data and automatically transfers transmit and receive data in sync with IN and OUT data
requests from the HOST until data whose pieces are as many as the number of transfer data set in DMA
is transferred.
DMAE
0
1
Note:
Access to transmit and receive buffers by CPU is forbidden while the DMAE bit is set. Set the
number of DMA transfer data to a multiple of the value of the PKS set in direction the EP1 to EP5
control registers (EP1C to EP5C) when transferring data to OUT.
CM44-10137-6E
End Point is invalid.
End Point is assumed to be effective.
Function operating mode
OUT end point
IN end point
Release of the automatic buffer TRANSFER mode
Set of the automatic buffer TRANSFER mode
FUJITSU MICROELECTRONICS LIMITED
CHAPTER 11 USB FUNCTION
11.3 Registers of USB Function
Operating mode
Operating mode
Specification prohibited
Isochronous transfer
Bulk transfer
Interrupt transfer
HOST operating mode
(for EP1 and EP2 only)
Operating mode
IN end point
OUT end point
205
Advertisement
Table of Contents
