Design Checklist Implementation - Intel 852GM Design Manual

Platform Design Checklist
14.3.

Design Checklist Implementation

The voltage rail designations in this checklist are as general as possible. The following table describes
the equivalent voltage rails in the Intel reference board schematics.
Checklist Rail
Vcc1_2
Vcc1_25
Vcc1_5
VccSus1_5
V1_5ALWAYS
VccSus2_5
Vcc3_3
VccSus3_3
V3ALWAYS
Vcc5
VccSus5
V5ALWAYS
Vcc12
VccRTC
VCCP
VCCA
NOTES:
1. A rail powered in Sx is dependent on implementation.
2. VccLANx rail is powered on in Sx is dependent on implementation.
3. xALWAYS rail can be the SUS rail depending on implementation.
4. Vcc1_25 is the 1.25 V VTT rail for DDR.
5. For the Mobile Intel Pentium 4 Processor-M Front Side Bus, VCCP is the 1.2 V-1.3 V. Note that VCCP is the
supply to both the Vtt and Vcore for Mobile Intel Pentium 4 Processor-M.
6. VCC_VID is 1.2 V for processor PLL and VID circuitry.
238
Intel CRB Rail
+V1.2S_GMCH_CORE,
+V1.2S_GMCH_HUB,
+V1.2S_GMCH_HGPLL,
+V1.2S_GMCH_DPLL,
+V1.2S_GMCH_ASM
+V1.25S [DDR_Vtt]
+V1.5S_GMCH_DVO,
+V1.5S_GMCH_ALVDS,
+V1.5S_GMCH_ADAC,
+V1.5S_GMCH_DLVDS,
+V1.5S_ICH,
+V1.5S_ICHHUB
+V1.5_ICHLAN
+V1.5A_ICH
+V2.5_GMCH_SM,
+V2.5_GMCH_QSM,
+V2.5_GMCH_TXLVDS,
+V2.5_DDR
+V3.3S_ICH,
+V3.3S_GMCH_GPIO,
+V3.3S_CLKRC,
+V3.3S_SPD,
+V3.3S_LVDS,
+V3.3S_FWH
+V3.3_ICHLAN,
+V3.3_LAN
+V3.3ALWAYS_ICH
+V5S_DAC
+V5_USB
+V5A_ICH
+V12S
+V_RTC
+VCC_IMVP
+VCC_VID
On S0-S1 On S3 On S4
X
X
X
X X
X X X
X X
X
X
X X X
X
X X
X X X
X
X X X
X
X
®
Intel 852GM Chipset Platform Design Guide
R
On S5 Notes
4
1,3
X
1,2,3
X
1,3
X
X
5
6