参数资料
型号: M4A3-96/48-55VC
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: PLD
英文描述: High Performance E 2 CMOS In-System Programmable Logic
中文描述: EE PLD, 5.5 ns, PQFP100
封装: TQFP-100
文件页数: 11/62页
文件大小: 1078K
代理商: M4A3-96/48-55VC
ispMACH 4A Family
19
PAL Block Clock Generation
Each ispMACH 4A device has four clock pins that can also be used as inputs. These pins drive a clock
generator in each PAL block (Figure 14). The clock generator provides four clock signals that can be used
anywhere in the PAL block. These four PAL block clock signals can consist of a large number of
combinations of the true and complement edges of the global clock signals. Table 14 lists the possible
combinations.
1. M4A(3,5)-32/32 and M4A(3,5)-64/32 have only two clock pins, GCLK0 and GCLK1. GCLK2 is tied to GCLK0, and GCLK3 is tied to GCLK1.
Note:
1. Values in parentheses are for the M4A(3,5)-32/32 and M4A(3,5)-64/32.
This feature provides high flexibility for partitioning state machines and dual-phase clocks. It also allows
latches to be driven with either polarity of latch enable, and in a master-slave configuration.
Table 14. PAL Block Clock Combinations1
Block CLK0
Block CLK1
Block CLK2
Block CLK3
GCLK0
GCLK1
GCLK0
GCLK1
X
GCLK1
GCLK0
X
GCLK2 (GCLK0)
GCLK3 (GCLK1)
GCLK2 (GCLK0)
GCLK3 (GCLK1)
X
GCLK3 (GCLK1)
GCLK2 (GCLK0)
GCLK0
GCLK1
GCLK2
GCLK3
Block CLK0
(GCLK0 or GCLK1)
Block CLK1
(GCLK1 or GCLK0)
Block CLK2
(GCLK2 or GCLK3)
Block CLK3
(GCLK3 or GCLK2)
17466G-004
Figure 14. PAL Block Clock Generator 1
相关PDF资料
PDF描述
M4A3-96/48-7VC High Performance E 2 CMOS In-System Programmable Logic
M4A3-96/48-7VI High Performance E 2 CMOS In-System Programmable Logic
M4A5-64/32-12VI48 High Performance E 2 CMOS In-System Programmable Logic
M4A5-64/32-55JC High Performance E 2 CMOS In-System Programmable Logic
M4A5-64/32-55VC High Performance E 2 CMOS In-System Programmable Logic
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