RG82845G S L66F Intel, RG82845G S L66F Datasheet - Page 37

• Manufacturer Part Number: RG82845G S L66F
• Manufacturer: Intel

Specifications of RG82845G S L66F

• Lead Free Status / RoHS Status: Not Compliant

2.9
Intel
®
Table 2-2. Voltage Levels and RCOMP for Various Interfaces
82845G/82845GL/82845GV GMCH Datasheet
Table 2-2
NOTE:
Power and Ground Signals
1. For the Pentium 4 processor with 512-KB L2 cache on 0.13 Micron Process, VTT range is 1.29 V–1.525 V.
2. Refer to the Intel
Core
AGTL+
AGP/DVO
HI1.5
DDR - SSTL_2
SDR - LVTTL
VCC
VSS
VCCAGP
VCCA_FSB
VTTFSB
VTTDECAP
VCCA_HI
VCCHL
VCCA_DPLL
VCCA_DAC
VSSA_DAC
VCCGPIO
VCCSM
VCCA_SM
VCCQSM
Signal Name
For the Pentium 4 processor with 256-KB L2 cache, VTT range is 1.535 V– 1.75 V
Platform Design Guide for details.
Interface
shows the VTT/VDD, VREF, RCOMP, and VSWING levels for the various interfaces.
VCC for 1.5 V core.
GND supply.
VCC for AGP – 1.5 V.
Analog Vcc for the Host PLL – 1.5 V. This supply requires special filtering. Refer to the Intel
Pentium
Design Guide for details.
VTT supply for PSB, having a range of 1.15 V–1.75 V.
VTT edge cap connection supply. Do not connect to MB VTT supply. Refer to the Intel
Pentium
Design Guide for implementation.
Analog VCC for the HI/AGP PLL – 1.5 V. Does not require special filtering.
VCC for Hub Interface – 1.5 V.
Analog Vcc for the Display PLL – 1.5 V. This supply requires special filtering. Refer to the
Intel
Platform Design Guide for details.
Analog Vcc for the DAC – 1.5 V. Refer to the Intel
Package and Intel
requirements.
Analog Vss for the DAC. This supply should go directly to motherboard ground.
Vcc for GPIO – 3.3 V.
Vcc for System Memory – 3.3 V for SDR, 2.5 V for DDR.
Analog VCC for System Memory DLL – 1.5 V supply requires special filtering. Refer to the
Intel
Platform Design Guide for details.
Quiet VCC for System Memory – 3.3 V for SDR, 2.5 V for DDR. Supply requires special
filtering. Refer to the Intel
845GL/845GV Chipset Platform Design Guide for details.
®
Pentium
®
®
Pentium
Pentium
®
®
4 Processor in 478-Pin Package and Intel
4 Processor in 478-Pin Package and Intel
®
1.15 -1.75 V
4 Processor in 478-Pin Package and Intel
1.25/2.5 V
®
®
VTT/VDD
(Volts)
4 Processor in 478-Pin Package and Intel
4 Processor in 478-Pin Package and Intel
1.5 V
1.5 V
1.5 V
3.3 V
®
845G/845GL/845GV Chipset Platform Design Guide for supply
(1)
®
Pentium
0.5 * VDD
0.5 * VDD
0.5 * VDD
2/3 * VTT
(volts)
VREF
0.35
®
NA
4 Processor in 478-Pin Package and Intel
Description
®
RCOMP
Pentium
®
®
(Ω)
NA
25
40
69
60
20
845G/845GL/845GV Chipset Platform
845G/845GL/845GV Chipset Platform
®
845G/845GL/845GV Chipset
®
®
®
845G/845GL/845GV Chipset
845G/845GL/845GV Chipset
4 Processor in 478-Pin
RCOMP
Note 2
term
Signal Description
®
845G/
1/3*VTT
Vswing
(Volts)
NA
NA
0.7
NA
NA
®
37
®