sii3114 Silicon image, sii3114 Datasheet - Page 69

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

Silicon Image, Inc.
FIFO Pointers1– Channel X
Address Offset: 68
Access Type: Read Only
Reset Value: 0x0000_0000
This register provides visibility into the data FIFO for Channel X in the SiI3114. The data FIFO is organized as a
four byte-wide x 64 deep memory array. There are separate write and read pointers for each of the byte slices.
This register is used for hardware debugging purposes only. The register bits are defined below.
FIFO Pointers2– Channel X
Address Offset: 6C
Access Type: Read Only
Reset Value: 0x0000_0000
This register provides visibility into the data FIFO for Channel X in the SiI3114. The data FIFO is organized as a
four byte-wide x 64 deep memory array. There are separate write and read pointers for each of the byte slices.
This register is used for hardware debugging purposes only. The register bits are defined below.
© 2007 Silicon Image, Inc.
• Bit [31:24] : FIFO Byte 1 Wr Pointer (R). This bit field provides the write pointer for Byte 1.
• Bit [23:16] : FIFO Byte 1 Rd Pointer (R). This bit field provides the read pointer for Byte 1.
• Bit [15:08] : FIFO Byte 0 Wr Pointer (R). This bit field provides the write pointer for Byte 0.
• Bit [07:00] : FIFO Byte 0 Rd Pointer (R). This bit field provides the read pointer for Byte 0.
• Bit [31:24] : FIFO Byte 3 Wr Pointer (R). This bit field provides the write pointer for Byte 3.
• Bit [23:16] : FIFO Byte 3 Rd Pointer (R). This bit field provides the read pointer for Byte 3.
• Bit [15:08] : FIFO Byte 2 Wr Pointer (R). This bit field provides the write pointer for Byte 2.
• Bit [07:00] : FIFO Byte 2 Rd Pointer (R). This bit field provides the read pointer for Byte 2.
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
FIFO Byte 1 Wr Pointer
FIFO Byte 3 Wr Pointer
H
H
/ 78
/ 7C
H
H
/ 268
/ 26C
H
H
/ 278
/ 27C
FIFO Byte 1 Rd Pointer
FIFO Byte 3 Rd Pointer
H
H
61
FIFO Byte 0 Wr Pointer
FIFO Byte 2 Wr Pointer
SiI3114 PCI to Serial ATA Controller
FIFO Byte 0 Rd Pointer
FIFO Byte 2 Rd Pointer
SiI-DS-0103-D
Data Sheet