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参数资料
| 型号： | QL5064-66APB484I |
| 英文描述： | BUS CONTROLLER |
| 中文描述： | 总线控制器 |
| 文件页数： | 9/37页 |
| 文件大小： | 806K |
| 代理商： | QL5064-66APB484I |
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QL5064 QuickPCI Data Sheet Rev D
9
QL5064 QuickPCI Data Sheet
9.0 DataIN Bus Description
The DataIN bus is used to transfer data from the PCI bus to the back-end interface. This data can come
from three different data paths: one of the two DMA receive FIFOs, or the Target Write/Post FIFO. For
proper data management, empty and almost empty flags from the two DMA receive FIFOs are available
to the back-end design. The almost empty flags are fully configurable via the Control_DATA bus
interface or the PCI bus. Interface to the Target Write/Post FIFO is accomplished through the Target
interface signals. A block diagram of the DataIN and Target control connections is seen in Figure 6.
Data is transferred to the DataIN bus in the same byte lane in which is was transferred over the PCI bus.
To assist with re-aligning or compacting data in the back-end interface, a byte-lane barrel shifter provides
the means to manipulate byte lane positioning. This is accomplished with the byte_select[2:0] input.
See the DataIN Bus section of the internal signal descriptions for more information.
Figure 6: DataIN Bus Description
pci cbe [7:0]
pci data
dataIN [63:0]
dataIN_bytesel [2:0]
rcv0_fifo_program_empty_flag
rcv0_fifo_ef
dataIN_BE[7:0]
dataIN_byteID [1:0]
rcv1_fifo_program_empty_flag
rcv1_fifo_ef
dataIN_src_sel[1:0]
dataIN_cs
user_clk
FPGA
Target/
Write
Post FIFO
(32 Deep)
DMA Rcv 1
or Target Write
Post FIFO
(64 Deep)
DMA Rcv 0
FIFO
(64 deep)
Chain Descriptor Tags
Byte lane [7:0]
Byte lane [7:0]
Byte lane [7:0]
Lane
Barrel
Shifter
Shifter
D
0
1
2
3
0
1
2
0
1
2
3
64
8
64
8
64
8
64
64
3
8
2
2
2
D
Q
D
Q
D
Q
P
相关PDF资料 |
PDF描述 |
|---|---|
| QL5064-66BPB456C | BUS CONTROLLER |
| QL5064-66BPB456I | BUS CONTROLLER |
| QL5064-66BPB484C | BUS CONTROLLER |
| QL5064-66BPB484I | BUS CONTROLLER |
| QL5064-75CPB456C | BUS CONTROLLER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| QL5064-66APS484C-5541 | 制造商:QuickLogic Corporation 功能描述: |
| QL5064-66APS484I-5541 | 制造商:QuickLogic Corporation 功能描述: |
| QL5064-66BPS484C-5725 | 制造商:QuickLogic Corporation 功能描述: |
| QL5064-75CPS484C-5616 | 制造商:QuickLogic Corporation 功能描述: |
| QL5064-75CPS484I-5612 | 制造商:QuickLogic Corporation 功能描述: |
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