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研华工业主板_电脑主板电路图

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某知名品牌工业主板_电脑主板电路原理图

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PCM-9375 Revision History

PCM-9375 REV.A1 01-1 PCB:19C6937500 96BOM:96969375XXE Date: 2005/06/06

PCM-9375TTL REV.B1-01-2 PCB:19A6937541 96BOM:96969375E0E Date: 2009/04

1.PCB version: A1 01-1 P/N: 19C6937500

1.PCB Version: B101-2 P/N: 19A6937541

2.PG04: Add input CAP(C225,C226,C227,C228,C232,C244) for VT221(U1,U2,U4).

3.PG20: Change the USB power solution for polyswitch from UL issue(Del U23, U26 & Add

PS1,B23,R473,R474,PS2,B25,R475,R476)

PCM-9375 REV.A1 01-2 Date: 2005/12/21

1.PCB version: A1 01-2 P/N: 19C6937501

4.PG7~15: Update the BGA footprint for U13,U15(coner PAD grow)

5.PG14: Change D10 to BAS40-50.

2.PG11: Connect SODIMM I2C to SB SMBUS as a result of the careless before.

3.PG22: Connect IT888 I2C to SB SMBUS as a result of the careless before.

6.PG14: Change BH1(holder) to CN11(wire).

4.PG18: Change R289 from 10K to 0 ohm, R283 NL to 0 ohm, and delete R286

& R294 to fix CF compatible issue.

7.PG13: Change RG1 to B70 for USB power(SVS).

8.PG15: Change Q8 to MMBT2222 for current rating..

5.PG21: Chane LPT connector from 2.0mm to 1.27 mm.

6.PG4/5:Implement the 8051 to control the power-up squence.

7.PG13:Add RC filter for U15 Pin H14 & K14.

PCM-9375 REV.A1 01-2 Date: 2007/11/29

1.PCB version: A1 01-2 P/N: 19A6937501

PCM-9375 IDE to SATA 改版版本如下

1.PCM-9375 B1-01-2 (TTL),

PCM-9375 REV.A1 02-1 PCB:19A6937502 96BOM:96969375XXE Date: 2008/01/10

1.PG17: Add two serial 470ohm resistors at pin1

burned issue .

、pin2 of U18 to solve SCH3114

a.96! : Old 9696937511EaNew 96969375E0E

2.PG20: Connect pin 5

、8 of U23 and U26 to support over standard heavy

b.PCB : Old 19A6937502 (PCB PCM-9375 A1 02-1) aNew 19A6937540

c.PCB : Old 19A6937540 (PCB PCM-9375 B1 01-1) aNew 19A6937541

loading of USB port.

3.PG23: Audio signals reserve resistors R465~R466 before connect with

cn22 for SVS S063 feedback check.

2.PCM-9375 B1-01-2 (LVDS)

4.PG04: Pin 1

、3 of U3 add fuse FS5 to solve over temperature issue

a.96! : Old 9696937541EaNew 96969375F0E

that caused by open-short test.

b.PCB : Old 19A6937512 (PCB PCM-9375 A2 02-1) aNew 19A6937550

c.PCB : Old 19A6937550 (PCB PCM-9375 B1 01-1) aNew 19A6937551

5.PG05: D5

、D6 add fuse FS3、FS4 to prevent burned component that

caused by open-short test.

6.PG11: CN7 pin 197 add 0ohm resistor to reserve for choose 2.5V or 3.3V power source.

3.PCM-9375 B1-01-1 (LVDS)

a.96! : Old 96969375C0EaNew 96969375G0E

b.PCB : New 19A6937551

PCM-9375TTL REV.B1-01-1 PCB:19A6937540 96BOM:96969375XXE Date: 2008/11

1.PG18: Change IDE to SATA & Refer from PCM-233A A101-2(Remove IDE conn and add IDE to SATA parts) .

2.PG21:Add R521 for U51-UART interface

3.PG21:Add Q19& R294 for COM port enable control.

4.PG05,15,20:Update the D5,D6,CN13,CN15,SP1 for CIS new footprint.

5.PG04:Change CN2 CONN for new footprint(WF_4P_200_R1_D).

6.PG21: Add R523~R528(reserve) for RS422/RS485 stable transmission.

7.PG17: Add R282 & pull up to V3.3 for OD pin(U18.115).

8.PG20: Add D21(BAT54) for leakage.

Approved by

Checked by

Prepared by

9.PG14:Update the footprint for BH1 .

Title

10.PG17&5:Add R285, R286 for reserve .

History Page

Size

Custom

Document Number

Rev

PCM-9375 TTL B101-2

Date:

Thursday, May 21, 2009

Sheet

全部评论(7)

2024-08-26 16:03:48zhhuxx1978

资料很好，谢谢楼主分享
2022-08-16 10:58:051925268321

值得学习
2022-08-16 09:11:14XY598646744

好用。PCM9375的主板
2020-05-14 14:09:49dnf9273

下载下来学习学习，值得推荐
2020-03-23 09:16:27linkai_joseph

中文图解功率MOS管的每一个参数！终于懂了！ 19-05-14 leafcho 关注献花(0)