Intel 820E AGP4XU20 AGPOC#, Typedet#, USBAGP+ B4 Usbagp, Agpclkconn B7 CLK, Pcirst# Greq#, Gperr#

8	7	6		5		4	3
			VCC3_3				VDDQ
							VCC12
AGP Connector		SBA[7:0]
		7
		7	VCC5		J13
		ST[2:0]
					AGP4XU_20
		28	AGP_OC#	B1 OVRCNT#	12V	A1	TYPEDET#
				B2		A2

2 1

D		B3	5V_A	TYPEDET#	A3
			5V_B	RESV_A
	USBAGP+ B4				A4	USBAGP-
28			USB+	USB-			28
		B5	GND_K	GND_A	A5
PIRQ#B		B6			A6

24,34

PIRQ#A

D

8,25,26,38

INTB#

INTA#

5

AGPCLK_CONN

B7 CLK

RST#

A7

PCIRST#

7,38

GREQ#

B8 REQ#

GNT#

A8

GGNT#

7,38

B9 VCC3_3_F

VCC3_3_A

A9

ST0

B10

ST0

ST1

A10

ST1

B11

ST2

ST2

RESV_B

A11

RBF#

B12

A12

PIPE#

7,38

RBF#

PIPE#

7,38

B13

A13

GND_L

GND_B

B14

A14

WBF#

RESV_H

WBF#

7,38

SBA0

B15

SBA0

SBA1

A15

SBA1

B16

VCC3_3_G

VCC3_3_B A16

SBA2

B17

SBA2

SBA3

A17

SBA3

7,38

SBSTB

B18

SB_STB

SB_STB#

A18

SBSTB#

7,38

B19

A19

VCC3_3SBY

GND_M

GND_C

SBA4

B20

A20

SBA5

SBA4

SBA5

SBA6

B21

SBA6

SBA7

A21

SBA7

C

B22

RESV

RESV_C

A22

B23

GND_N

GND_D

A23

B24

3_3VAUX1

RESV_D

A24

B25

VCC3_3_H

VCC3_3_C A25

GAD31

B26

AD31

AD30

A26

GAD30

GAD29

B27

AD29

AD28

A27

GAD28

B28

VCC3_3_I

VCC3_3_D A28

GAD27

B29

AD27

AD26

A29

GAD26

GAD25

B30

AD25

AD24

A30

GAD24

B31

GND_O

GND_E

A31

7,38

ADSTB1 B32

AD_STB1

AD_STB1#

A32

ADSTB#1

GAD23

B33

A33

GC/BE#3

AD23

C/BE3#

B34

VDDQ_F

VDDQ_A

A34

GAD21

B35

AD21

AD22

A35

GAD22

GAD19

B36

AD19

AD20

A36

GAD20

B37

GND_P

GND_F

A37

GAD17

B38

AD17

AD18

A38

GAD18

GC/BE#2

B39

C/BE2#

AD16

A39

GAD16

B40

VDDQ_G

VDDQ_B

A40

B

7,38

GIRDY#

B41

IRDY#

FRAME#

A41

GFRAME#

7,38

B42

A42

3_3VAUX2

RESV_E

B43

GND_Q

GND_G

A43

B44

RESV_K

RESV_F

A44

B45

VCC3_3_J

VCC3_3_E

A45

7,38

GDEVSEL#

B46

DEVSEL#

TRDY#

A46

GTRDY#

7,38

B47

A47

GSTOP#

VDDQ_H

STOP#

7,38

GPERR#

B48

A48

PCI_PME#

38

PERR#

PME#

8,25,26

B49

A49

GND_R

GND_H

38

GSERR#

B50

SERR#

PAR

A50

GPAR

7,38

A51

GC/BE#1

B51

C/BE1#

AD15

GAD15

B52

VDDQ_I

VDDQ_C A52

GAD14

B53

AD14

AD13

A53

GAD13

GAD12

B54

AD12

AD11

A54

GAD11

B55

GND_S

GND_I

A55

GAD10

B56

AD10

AD9

A56

GAD9

GAD8

B57

AD8

C/BE0#

A57

GC/BE#0

B58

VDDQ_J

VDDQ_D A58

A

7,38

ADSTB0

B59

AD_STB0

AD_STB0#

A59

ADSTB#0

7,38

A60

GAD7

B60

AD7

AD6

GAD6

B61

GND_T

GND_J

A61

A62

GAD5

B62

AD5

AD4

GAD4

GAD3

B63

AD3

AD2

A63

GAD2

B64

VDDQ_K

VDDQ_E

A64

GAD1

B65

A65

GAD0

AD1

AD0

7

GAD[31:0]

6

MCH_AGPREF B66

VREF_CG

VREF_GC A66

7

GC/BE#[3:0]

8

7

6

5

4

3

8,25,26,38

6,8,10,11,12,25,26,27

VDDQ

	AGPREF circuitry should be placed close to MCH.							R193
							CON_AGPREF_Q
					Q8		3
								R208
						3	2N7002LT1
7,38	24,34	TYPEDET#	1	1		2
							2

C

301-1%

200-1%

B

CONN_AGPREF

6

A

TITLE: INTEL(R) 820E CHIPSET 2 DIMM FCPGA REFERENCE BOARD		REV:
AGP CONNECTOR	DRAWN BY:	0.5
R PCG PLATFORM DESIGN		PROJECT:
	PCG AE	Camino2
1900 PRAIRIE CITY ROAD
	LAST REVISED:	SHEET:
FOLSOM, CALIFORNIA 95630
	3-20-2000_10:15	24 OF 40
2	1