参数资料
型号: M66596WG
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PBGA64
封装: 0.80 MM PITCH, FBGA-64
文件页数: 53/133页
文件大小: 1611K
代理商: M66596WG
M66596FP/WG
rev .1.00
2006.3.14
page 24 of 127
The DMA0CFG register controls the input/output pins used for the DMA0 interface and the D0FIFO port, and the
DMA1CFG
register controls the input/output pins used for the DMA1 interface and the D1FIFO port.
DMA0 pin configuration register [DMA0CFG]
<Address: 0CH>
DMA1 pin configuration register [DMA1CFG]
<Address: 0EH>
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DREQA BURST
DACKA
DFORM
DENDA PKTM DENDE
OBUS
?
0
-
0
-
0
?
0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
?
0
-
0
?
Bit
Name
Function
S/W
H/W
Note
15 Nothing is placed here. This should be fixed at “0”.
14 DREQA
DREQx_N signal polarity selection
This specifies the active state for the DREQx_N
pin.
0: Low active
1: High active
R/W
R
-
13 BURST
Burst mode
0: Cycle steal transfer
1: Burst transfer
R/W
R
12-11 Nothing is placed here. These should be fixed at “0”.
10 DACKA
DACKx_N signal polarity selection
This specifies the active state for the DACKx_N
pin.
0: Low active
1: High active
R/W
R
-
9-7 DFORM
DMA transfer signal selection
011:
Only the DACKx_N signal is used (CPU
bus).
000:
The Address signal + the RD_N/WRx_
signals are used (CPU bus).
010:
The DACKx_N + the RD_N/WRx_N
signals are used (CPU bus).
100:
The DACKx_N signal is used (split bus).
110:
The DACK0_N + the DSTB0_N signal
are used (split bus).
001, 101, 111: Reserved
R/W
R
6
DENDA
DEND0_N signal polarity selection
This specifies the active state of the DENDx_N
pin.
0: Low active
1: High active
R/W
R
-
5
PKTM
Packet mode
0: The DENDx_N signal is asserted in transfer
units.
1: The DENDx_N signal is asserted each time
an amount of data corresponding to the buffer
size is transferred.
R/W
R
4
DENDE
DENDx_N signal enabled
0: The DENDx_N signal is disabled
(Hi-Z output).
1: The DENDx_N signal is enabled.
R/W
R
3
Nothing is placed here. It should be fixed at “0”.
2
OBUS
OBUS operation
disabled
0: The OBUS mode is enabled.
1: The OBUS mode is disabled.
R/W
R
1-0 Nothing is placed here. These should be fixed at "0”.
<<Notes>>
*2) The PKTM bit is valid only when the data receiving direction (reading from the buffer memory) is set. If the
DxFIFO port is being used in the data writing direction, “PKTM=0” should be set.
*3) The “DFORM=110” setting is valid only when the DMA channel 0 is set.
Also, the following should not be set: "DFORM=001”,"DFORM=101” and"DFORM=111”.
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