一些老主板的关健频率和电压

1.基本电压含:
             VCC3: 3.3V
             VTT: 1.5V
             VCC25: 2.5V
             VCC333: 3.3V
             VCC: 5V
             VCORE: CPU之工作电压(是CPU OR电压治具而定)
             POWER_OK OR POWER_GOOD: 3.3V
             CPU之参考电压: EX: VGTL:1V
可POWER ON时先量测基本电压VIA SOCKET462系列
2.各个RST含:
             PCIRST :由HI准位到LOW准位(5V or 3V)
             AGPRST :由HI准位到LOW准位(5V or 3V)
             CPURST:可分(1)586 :由LOW准位到HI准位(3V)
                                   (2)686 :由HI准位到LOW准位(1.5V)
                                   (3)Socket 462系列:由HI准位到LOW准位(1.7V)
                                   (4)Socket 478系列:由HI准位到LOW准位(1.5V)
             CRESET :由HI准位到LOW准位( 3.3V)
             RST_BT :由HI准位到LOW准位(3V)
             IDE_RST :由HI准位到LOW准位(5V)
3.各项CLK含:
               (1)ISA: 14.318MHz(OSC由CLKGEN来)
                             8MHz(BCLK由南桥产生)
             (2)PCI: 33MHz
             (3)AGP: 1X: 33MHz
                             2X: 66MHz
                             4X: 133MHz(UAGP有132PIN)
             (4)DIMM: 66MHz ,100MHz ,133MHz.
             (5)DDR: 100MHz,133MHz,166MHz,200MHz.
             (6)CPU: 66MHz,100MHz ,133MHz.
             (7)北桥: 66MHz,100MHz,133MHz,200MHz.
             (南桥: 14.318MHz.
                             48MHz.
                             33MHz.
             (9)I/O: 48MHz or 24MHz
INTEL 478系列:
               (1)PCI: 33MHz
             (2)AGP: 4X: 133MHz(UAGP有132PIN)
             (3)DIMM: 100MHz,133MHz
             (4)CPU: 100MHz,133MHz
             (5)北桥: 66MHz ,100MHz ,133MHz
             (5)南桥: 14.318MHz
                             48MHz
                             33MHz
                             66MHz
             (6)LPC I/O: 33MHz,24MHz,48MHz.
                       *以上皆正常后才上CPU AND DIMM测试是否开机
Socket 462系列:
               (1)PCI: 33MHz
             (2)AGP: 4X: 133MHz(UAGP有132PIN)
             (3)DIMM: 100MHz or 133MHz
             (4)DDR: 100MHz,133MHz,166MHz,200MHz.
             (5)CPU: 100MHz or 133MHz
             (6)北桥: 100MHz or 133MHz
             (7)南桥: 14.318MHz
                             48MHz
                             33MHz
                             66MHz
             (LPC I/O: 33MHz AND 24MHz
                       *以上皆正常后才上CPU AND DIMM测试是否开机
               (1)PCI: 33MHz
             (2)AGP: 4X: 133MHz(UAGP有132PIN)
             (3)DIMM: 100MHz or 133MHz
             (4)DDR: 100MHz,133MHz,166MHz,200MHz.
             (5)CPU: 100MHz or 133MHz
             (6)北桥: 100MHz or 133MHz
             (7)南桥: 14.318MHz
                             48MHz
                             33MHz
                             66MHz

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