CS5535-UDCF AMD (ADVANCED MICRO DEVICES), CS5535-UDCF Datasheet - Page 275

• Manufacturer Part Number: CS5535-UDCF
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of CS5535-UDCF

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

ATA-5 Controller Register Descriptions
6.4.3.3
ATAC I/O Address 04h
Type
Reset Value
AMD Geode™ CS5535 Companion Device Data Book
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31:2
Bit
4:3
Bit
1:0
5
2
1
0
Bus Master 0 PRD Table Address - Primary (ATAC_BM0_PRD)
Name
D0DMA
RSVD
BMINT
BMERR
BMSTS (RO)
Name
PRD_PNTR
RSVD
R/W
00000000h
ATAC_BM0_STS_PRIM Bit Descriptions (Continued)
Description
Drive 0 DMA Capable. Allows Drive 0 to be capable of DMA transfers.
0: Disable.
1: Enable.
Reserved: Set to 0. Must return 0 on reads.
Bus Master Interrupt. Has the bus master detected an interrupt?
0: No.
1: Yes.
Write 1 to clear.
Bus Master Error. Has the bus master detected an error during data transfer? (This bit
is set by a write access to MSR 51300024h.)
0: No.
1: Yes.
Write 1 to clear.
Bus Master Status (Read Only). Is the bus master active?
0: No.
1: Yes.
Description
Pointer to the Physical Region Descriptor Table. This register is a PRD table pointer
for IDE Bus Master 0.
When written, this register points to the first entry in a PRD table. Once IDE Bus Master
0 is enabled (Command Register bit 0 = 1), it loads the pointer and updates this register
to the next PRD by adding 08h.
When read, this register points to the next PRD.
Reserved. Set to 0.
ATAC_BM0_PRD Bit Descriptions
ATAC_BM0_PRD Register Map
PRD_PNTR
9
8
31506B
7
6
5
4
3
2
RSVD
1
275
0