参数资料
型号: M66290AFP
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封装: TQFP-48
文件页数: 10/54页
文件大小: 452K
代理商: M66290AFP
USB DEVICE CONTROLLER
M66290AGP/FP
MITSUBISHI <DIGITAL ASSP>
17
Reset
Function
Name
Bit
Name
Bit
R
-
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
Register", write BCLR command or read all data of the buffer, then
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
Register", write IVAL command or write data into the buffer of maximum
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]
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D15
D13
D14
(2-6) Interrupt Status Register 1 (Address : 1Ah)
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