Intel VC820 Design Guide - Page 233
VID Override Jumpers, VRM
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8 7 6 VRM VRM requirements are based on VRM8.4 spec . 5 4 VCC12 L19 1UH R71 5.1-5% C97 + 1UF-X7R VCC5 D PVCC_R 1 2 DO3316P-102 Place caps next to output FETs. C82,C87,C107,C111 must support >6A of RMS current. VRM_VCC5 1 1 1 1 1 R80 10K C140 + 10UF C90 0.1UF C87 + 1200UF C111 + 1200UF C107 + 1200UF C82 + 1200UF 2 2 2 2 2 1 2 C72 + 0.01UF R54 2.7K VCC 5 PVCC 2 VR3 VRM_IMAX C VID[4:0] 3 VID0 RP21 1 8 VID1 2 7 VID2 3 6 VID3 4 5 VID4 0K 0K R398 OUTEN VID0_R VID1_R VID2_R VID3_R VID4_R 19 OUTEN 18 VID0 17 VID1 16 VID2 15 VID3 14 VID4 IMAX 7 PWRGD 13 FAULT# 12 G1 20 IFB 8 G2 1 VFB 11 VRM_FAULT VRM_G1 VRM_IFB VRM_G2 10 COMP 9 SS 4 SGND 3 GND 6 SENSE VID Override Jumpers Default JP6-JP10 OUT. Remove RP21, R398 for VID override. JP6 JP8 JP10 JP7 JP9 LTC1753 VRM_COMP VRM_VFB VRM_SS 3 2 1 VCC3_3 VCC5 R332 220 R53 5.6K D VRM_PWRGD 33 C118, C119 must be next to FETs. C118 + 1UF-X7R 5678 5678 1 D1 D2 D3 D4 D1 D2 D3 D4 Q2 SI4410DY Q3 SI4410DY 2 VCCVID S1 S2 S3 G1 S1 S2 S3 G1 C 4321 4321 L18 R65 IFB_Q 20 1.0UH-20A ETQP6F0R8L 5678 5678 D1 D2 D3 D4 D1 D2 D3 D4 1 C119 + 1UF-X7R Q5 SI4410DY Q4 SI4410DY G1 S3 4321 S2 S1 G1 S3 S2 S1 2 4321 C71 1000PF C86 0.1UF No Stuff C106 C75 0.1UF R55 8.2K 150PF C73 C74 VRM_COMP_R 0.01UF VCCVID1 VCC12 VCC5 B J14 VRM8_4 A1 V5_IN0 V5_IN3 B1 A2 V5_IN1 V5_IN4 B2 A3 V5_IN2 V5_IN5 B3 A4 V12_IN0 V12_IN1 B4 A5 V12_IN2 RSV B5 30 VID1_0R 30 VID1_2R 30 VID1_4R A6 ISHARE OUT_EN B6 A7 VID0 VID1 B7 A8 VID2 VID3 B8 A9 VID4 PWR_GOOD B9 A10 V_OUT0 GND5 B10 A11 GND0 V_OUT6 B11 A12 V_OUT1 GND6 B12 A13 GND1 V_OUT7 B13 A14 V_OUT2 GND7 B14 A15 GND2 V_OUT8 B15 A A16 V_OUT3 GND8 B16 A17 GND3 V_OUT9 B17 A18 V_OUT4 GND9 B18 A19 GND4 V_OUT10 B19 A20 V_OUT5 GND10 B20 VCC5 VCC12 VCCVID1 VCC3_3 VCC3_3 R371 10K R370 220 VID1_1R 30 VID1_3R 30 VRM1_PWRGD 33 8 7 6 C100 + 2200UF C93 + 2200UF C103 + 2200UF C366 + 2200UF 1 1 1 1 B 2 2 2 2 Sanyo 4SP2200M 5 VID1[4:0] VID1[0] VID1[1] VID1[2] VID1[3] VID1[4] RP24 1 8 2 7 3 6 4 5 0K 0K R104 VID Override Jumpers Default JP16, JP27-JP30 OUT. Remove RP24, R104 for VID override. 5 4 VID1_0R 30 VID1_1R 30 VID1_2R 30 VID1_3R 30 VID1_4R 30 JP16 JP27 JP29 JP28 JP30 A TITLE: INTEL(R) 820 CHIPSET DUAL PROCESSOR CUSTOMER REFERENCE BOARD REV: VRM 3.03 R PCD PLATFORM DESIGN DRAWN BY: PROJECT: 1900 PRAIRIE CITY ROAD FOLSOM, CALIFORNIA 95630 LAST REVISED: SHEET: 11-29-1999_14:46 30 OF 38 3 2 1