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参数资料
| 型号： | QL5842-33BPSN484M |
| 厂商： | QUICKLOGIC CORP |
| 元件分类： | 总线控制器 |
| 英文描述： | PCI BUS CONTROLLER, PBGA484 |
| 封装： | 23 X 23 MM, 2.13 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, MS-034AAJ-1, BGA-484 |
| 文件页数： | 15/76页 |
| 文件大小： | 1409K |
| 代理商： | QL5842-33BPSN484M |
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2006 QuickLogic Corporation
QL58x2 Enhanced QuickPCI Family Data Sheet Rev. K
22
Dedicated Clock
There is one dedicated clock in the larger device of the QL58x2 family (QL5842). This clock connects to the
clock input of the Logic Cell and I/O registers, and RAM blocks through a hardwired connection and is
multiplexed with the programmable clock input. The dedicated clock provides a fast global network with low
skew. Users have the ability to select either the dedicated clock or the programmable clock (Figure 14).
Figure 14: Dedicated Clock Circuitry within Logic Cell
NOTE: For more information on the clocking capabilities of the QL58x2 Enhanced QuickPCI Family, see
QuickLogic Application Note 68 at http://www.quicklogic.com/images/appnote68.pdf.
I/O Control and Local Hi-Drives
Each bank of I/Os has two input-only pins that can be programmed to drive the RST, CLK, and EN inputs of
I/Os in that bank. These input-only pins also serve as high drive inputs to a quadrant. These buffers can be
driven by the internal logic both as an I/O control or high drive. For I/O constrained designs, these pins can
be used for general purpose inputs. To provide more general purpose I/Os in the 208 PQFP package, the I/O
controls pins are not bonded out. The performance of these resources is presented in Table 14.
Table 15 shows the total number of I/O control pins per device/package combination. These pins are not
bonded out in the smaller devices and packages. This increases the number of bi-directional user I/Os available.
Table 14: I/O Control Network/Local High-Drive
Destination
TT, 25 C, 2.5 V
From Pad
From Array
I/O (far)
1.00 ns
1.14 ns
I/O (near)
0.63 ns
0.78 ns
Skew
0.37 ns
0.36 ns
Table 15: I/O Control Pins per Device/Package Combination
Device
144 TQFP
196 TFBGA
208 PQFP
280 LFBGA
484 BGA
QL5822
-----
QL5842
-
16
Programmable Clock or
General Routing
Dedicated Clock
CLK
Logic Cell
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