Intel L7700 LE80537LG0334M User Manual

Datasheet

21

For clean, on-chip power distribution, the processor will have a large number of V

CC

 

(power) and V

SS 

(ground) inputs. All power pins must be connected to V

CC 

power planes 

while all V

SS

 pins must be connected to system ground planes. Use of multiple power 

and ground planes is recommended to reduce I*R drop. Please contact your Intel 

representative for more details. The processor V

CC

 pins must be supplied the voltage 

determined by the VID (Voltage ID) pins.

BCLK[1:0] directly controls the FSB interface speed as well as the core frequency of the 

processor. As in previous generation processors, the core frequency is a multiple of the 

BCLK[1:0] frequency. The processor uses a differential clocking implementation.

The processor uses seven voltage identification pins, VID[6:0], to support automatic 

selection of power supply voltages. The VID pins for processor are CMOS outputs 

driven by the processor VID circuitry. 

 specifies the voltage level corresponding 

to the state of VID[6:0]. A 1 in this refers to a high-voltage level and a 0 refers to low-

voltage level.