參數(shù)資料
型號: M66291GP
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封裝: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 87/126頁
文件大小: 893K
代理商: M66291GP
M66291GP/HP
Rev 1.01 2004.11.01 page 63 of 122
2.31 Dn_FIFO Select Registers (n=0~1)
D0_FIFO Select Register (D0_FIFO_SELECT)
<Address : H’48>
D1_FIFO Select Register (D1_FIFO_SELECT)
<Address : H’50>
b15
14
13
12
11
10
9876
54321
b0
BUST
DFORM
RWND
ACKA
REQA
INTM DMAEN BSWP
Octl
DMA_EP
0000
00000
0
----
-----
-
--
----
-----
-
<H/W reset : H'0000>
<S/W reset : ->
<USB bus reset : ->
b
Bit name
Function
R
W
15
BUST
Burst Mode
0 :
Cycle Steal Transfer
1 :
Burst Transfer
13~14
DFORM
Transfer Method
00 : Controls by DACK signal and read/write signal
01 : Controls by DACK signal only
10 : Controls by chip select/address signal and read/write signal
11 : Reserved
12
RWND
Buffer Rewind
<When set to OUT buffer>
Write
0 :
Invalid (Ignored when written)
1 :
Clears the buffer reading pointer
<When set to IN buffer>
Write
0 :
Invalid (Ignored when written)
1 :
Clears the buffer writing pointer
0
11
ACKA
DACK Polarity
0 :
"L" active
1 :
"H" active
10
REQA
DREQ Polarity
0 :
"L" active
1 :
"H" active
9INTM
DMA Interrupt Mode
0 :
Sets “1” to EPB_RDY bit by completion of DMA transfer
1 :
Sets “1” to EPB_RDY bit by completion of receiving
8
DMAEN
DMA Enable
0 :
Disable DMA transfer
1 :
Enable DMA transfer (assertion of DREQ signal)
7
BSWP
Byte Swap Mode
0 :
Byte is treated as little ENDIAN
1 :
Byte is treated as big ENDIAN
6Octl
Register 8-Bit Mode
0 :
Dn_FIFO Data Register is 16-bit mode
1 :
Dn_FIFO Data Register is 8-bit mode
5~4
Reserved. Set it to “0”.
00
3~0
DMA_EP
DMA Transfer Endpoint Designate
0001 :EP1 (Endpoint 1)
0010 :EP2 (Endpoint 2)
0011 :EP3 (Endpoint 3)
0100 :EP4 (Endpoint 4)
0101 :EP5 (Endpoint 5)
0110 :EP6 (Endpoint 6)
Other than those above : Invalid
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