参数资料
型号: QL1P100-7PUN86C
厂商: QUICKLOGIC CORP
元件分类: FPGA
英文描述: FPGA, 640 CLBS, 100000 GATES, PBGA86
封装: 6 X 6 MM, 1.20 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, TFBGA-86
文件页数: 2/44页
文件大小: 1101K
代理商: QL1P100-7PUN86C
2010 QuickLogic Corporation
QuickLogic PolarPro Device Data Sheet — 86-Pin TFBGA QL1P100
10
Figure 7: FIFO Flush from PUSH Side
Figure 8 illustrates a POP flush operation. After the Fifo_Pop_Flush is asserted at 2 (POP_Clk), four PUSH
clock cycles (12 through 15) are required to update the POP_FLAG, and PUSH_FLAG signals. The
Almost_Empty signal is asserted to indicate that the pop flush operation has been completed. On the
following rising edge of the POP_Clk (8), the POP_FLAG is updated accordingly to reflect the successful flush
operation.
Figure 8: FIFO Flush from POP Side
Figure 7 and Figure 8 are only true for this particular PUSH-POP clock frequency combination. The clock
frequency and phase difference between POP_Clk and PUSH_Clk can cause an additional flush delay of one
clock cycle in either domain because of the asynchronous relationship between the two clocks.
PUSH_Clk
Fifo_Push_Flush
POP_Clk
Almost_Full
PUSH_FLAG
valid
Almost_Empty
POP_FLAG
0000 (Empty)
earliest PUSH
valid
1
2
3
456
8
79
10
11
12
13
14
15
16
invalid
PO P_C lk
Fifo _P o p _F lush
PUSH_ C lk
Alm o st_E m p ty
PO P_F LA G
0000 (E m p ty)
A lm o st_Full
PUSH_ FL A G
va lid
inva lid
va lid
valid
ea rlie st PU SH
in valid
1
10
2
345
6
7
8
9
11
12
13
14
15
16
inva lid
相关PDF资料
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QL1P100-7PUN86I FPGA, 640 CLBS, 100000 GATES, PBGA86
QL1P100-7PUN86M FPGA, 640 CLBS, 100000 GATES, PBGA86
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QL1P100-8PU86M FPGA, 640 CLBS, 100000 GATES, PBGA86
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