參數(shù)資料
型號: M4A3-96/48-55VC
廠商: Lattice Semiconductor Corporation
文件頁數(shù): 11/62頁
文件大小: 0K
描述: IC CPLD ISP 4A 96MC 100TQFP
標準包裝: 90
系列: ispMACH® 4A
可編程類型: 系統(tǒng)內(nèi)可編程
最大延遲時間 tpd(1): 5.5ns
電壓電源 - 內(nèi)部: 3 V ~ 3.6 V
宏單元數(shù): 96
輸入/輸出數(shù): 48
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP
供應商設備封裝: 100-TQFP(14x14)
包裝: 托盤
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
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