FW82801BA S L5PN Intel, FW82801BA S L5PN Datasheet - Page 350
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FW82801BA S L5PN
Manufacturer Part Number
FW82801BA S L5PN
Description
Manufacturer
Intel
Datasheet
1.FW82801BA_S_L5PN.pdf
(671 pages)
Specifications of FW82801BA S L5PN
Lead Free Status / RoHS Status
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LPC Interface Bridge Registers (D31:F0)
9.2.9
9.2.10
9.2.11
350
DMA Master Clear Register
(LPC I/F—D31:F0)
I/O Address:
Default Value:
DMA_CLMSK—DMA Clear Mask Register
(LPC I/F—D31:F0)
I/O Address:
Default Value:
Lockable:
DMA_WRMSK—DMA Write All Mask Register
(LPC I/F—D31:F0)
I/O Address:
Default Value:
Lockable:
Bit
7:0
Bit
7:0
Bit
7:4
3:0
Master Clear — WO. No specific pattern. Enabled with a write to the port. This has the same effect
as the hardware Reset. The Command, Status, Request, and Byte Pointer flip/flop registers are
cleared and the Mask Register is set.
Clear Mask Register — WO. No specific pattern. Command enabled with a write to the port.
Reserved. Must be 0.
Channel Mask Bits — R/W. This register permits all four channels to be simultaneously enabled/
disabled instead of enabling/disabling each channel individually, as is the case with the Mask
Register – Write Single Mask bit. In addition, this register has a read path to allow the status of the
channel mask bits to be read. A channel's mask bit is automatically set to 1 when the Current Byte/
Word Count Register reaches terminal count (unless the channel is in auto-initialization mode).
Setting the bit(s) to a 1 disables the corresponding DREQ(s). Setting the bit(s) to a 0 enables the
corresponding DREQ(s). Bits [3:0] are set to 1 upon part reset or Master Clear. When read, bits [3:0]
indicate the DMA channel [3:0] ([7:4]) mask status.
Bit 0 = Channel 0 (4)
Bit 1 = Channel 1 (5)
Bit 2 = Channel 2 (6)
Bit 3 = Channel 3 (7)
NOTE: Disabling channel 4 also disables channels 0–3 due to the cascade of channel’s 0 – 3
through channel 4.
Ch. #0
Ch. #4
xxxx xxxx
Ch. #0
Ch. #4
xxxx xxxx
No
Ch. #0
Ch. #4
0000 1111
No
–
–
–
–
–
–
3 = 0Dh;
7 = DAh
3 = 0Eh;
7 = DCh
3 = 0Fh;
7 = DEh
1 = Masked, 0 = Not Masked
1 = Masked, 0 = Not Masked
1 = Masked, 0 = Not Masked
1 = Masked, 0 = Not Masked
Intel
Description
Description
Description
Attribute:
Size:
Attribute:
Size:
Power Well:
Attribute:
Size:
Power Well:
®
82801EB ICH5 / 82801ER ICH5R Datasheet
WO
8-bit
WO
8-bit
Core
R/W
8-bit
Core
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