sii3114 Silicon image, sii3114 Datasheet - Page 73

• Manufacturer Part Number: sii3114
• Description: Pci To Serial Ata Controller
• Manufacturer: Silicon image

Silicon Image, Inc.
Channel X Extended Task File Register – Command Buffering
Address Offset: 98
Access Type: Read/Write
Reset Value: 0x0000_0000
This register defines one of the IDE Channel X Task File registers used for Command Buffered accesses in the
SiI3114. The register bits are defined below. If this register is written, the IDE Channel X Task File Device+Head
byte of the IDE Channel X Task File Register 1 – Command Buffering register must not be written.
Channel X Virtual DMA/PIO Read Ahead Byte Count
Address Offset: 9C
Access Type: Read/Write
Reset Value: 0x0000_0000
This register defines the read ahead byte count register for Virtual DMA and PIO Read Ahead transfers on
Channel X in the SiI3114. In Virtual DMA mode (PCI bus master DMA with PIO transfers), all 32 bits are used as
the word-aligned byte count. In PIO Read Ahead mode, only the lower 16 bits are used as the word-aligned byte
count.
Channel X Task File Configuration + Status
Address Offset: A0
Access Type: Read/Write
Reset Value: 0x6515_0101
This register defines the task file configuration and status register for Channel X in the SiI3114. The register bits
are defined below.
© 2007 Silicon Image, Inc.
• Bit [31:24] : Task File Cylinder High Ext(R/W). This write-only bit field defines the Channel X Task File
• Bit [23:16] : Task File Cylinder Low Ext (R/W). This bit field defines the Channel X Task File Extended
• Bit [15:08] : Task File Start Sector Ext (R/W). This bit field defines the Channel X Task File Extended Start
• Bit [07:00] : Task File Sector Count Ext (R/W). This bit field defines the Channel X Task File Extended
• Bit [31:16] : Reserved (R). This bit field is reserved and defaults to 0x6515.
Extended Cylinder High register.
Cylinder Low register.
Sector register.
Sector Count register.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Cylinder High Ext
H
H
H
/ D8
/ E0
/ DC
H
H
H
/ 2A0
/ 298
/ 29C
Reserved
H
H
H
/ 2D8
/ 2E0
/ 2DC
H
H
Cylinder Low Ext
H
Virtual DMA/PIO Read Ahead Byte Count
65
Start Sector Ext
SiI3114 PCI to Serial ATA Controller
Reserved
Sector Count Ext
SiI-DS-0103-D
Data Sheet