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GPU 4/6
5
MULTI-LEVEL STRAPS
1V8_AON
D
R177
R168
R167
29
STRAP0
29
VGA_ROM_SO
29
STRAP1
29
VGA_ROM_SI
29
STRAP2
29
VGA_ROM_SCLK
29
STRAP3
R161
R160
R159
29
STRAP4
29
STRAP5
ROM_SO
ROM_SI
ROM_SCLK
0
0
0
FS_OVERT# Enable
Default
C
0
0
1
FS_OVERT# Disable
1 = HIGH : Tied to 1.5V~1.854V (Nominal 1.8V)
M = Middle : Tied to 0.5V~1.3V (Nominal 0.9V)
0 = Low : Tied to 0V~0.3V
Strap 2
Strap 1
Strap 0
RAMCFG[4:0]
0
0
0
0 (0x0000)
(0x0) Default
0
0
1
1 (0x0001)
(0x1)
0
1
0
2 (0x0002)
(0x2)
0
1
1
3 (0x0003)
1
0
0
4 (0x0004)
1
0
1
5 (0x0005)
1
1
0
6 (0x0006)
B
1
1
1
7 (0x0007)
0
0
M
8 (0x0008)
0
M
0
9 (0x0009)
0
M
1
10 (0x000A)
0
1
M
11 (0x000B)
M
0
0
12 (0x000C)
M
0
1
13 (0x000D)
M
1
0
14 (0x000E)
M
1
1
15 (0x000F)
1
0
M
16 (0x0010)
1
M
0
17 (0x0011)
1
M
1
18 (0x0012)
1
1
M
19 (0x0013)
0
M
M
20 (0x0014)
A
M
0
M
21 (0x0015)
M
M
0
22 (0x0016)
M
M
1
23 (0x0017)
M
1
M
24 (0x0018)
1
M
M
25 (0x0019)
M
M
M
26 (0x001A)
5
4
3
27,28
GPU_PLLVDD_XS_SP
L34
1V8_RUN
HCB1608KF-300T60
Strap5
1V8_AON
STRAP[0:2]
non-Gsync = L
Setting RAM type
Gsync = H
R176
R170
R172
R614
R166
R164
W / GSYNC
R165
R153
R157
R613
R151
R147
W /O GSYNC
STRAP[0:2]
Setting RAM type
Samsung K4Z80325BC-HC14 (C-die) 4000MHz 256Mx32
(0x0) Default
Micron MT61K256M32JE-14:A (A-die) 4000MHz 256Mx32
(0x1)
(0x2)
Hynix H56C8H24MJR-S2C (M-die) 4000MHz 256Mx32
Strap 5
Strap 4
Strap 3
SMB_ALT_ADDR
DEVID_SEL
PCIE_CFG
0
0
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
1
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
1
1
1
0
1
1
0
0
M
1
0
0
0
M
0
1
0
0
0
M
1
1
0
1
0
1
M
1
0
1
M
0
0
1
1
0
M
0
1
1
1
0
M
1
0
1
1
1
M
1
1
1
1
1
4
3
2
XTAL
U3V
13/22 XTAL/PLL
Near the GPU
BD12
SP_PLLVDD
C349
C781
BC12
VID_PLLVDD
C650
C651
U42
GPCPLL_AVDD0
AF11
GPCPLL_AVDD1
C614
C350
C325
BB24
XSN_PLLVDD
BJ6
EXT_REFCLK_FL
XTALOUTBUFF
BL6
XTALIN
XTALOUT
R603
10K_04
XTALSSIN
N18E
X4
4
3
XTALOUT
XTALIN
1
2
C1355
U83-076_27MHZ
PCB Footprint = fsx3m
12p_50V_NPO_04
VGA_DEVICE
1= SMB_ALT_ADDR Enable
0= SMB_ALT_ADDR Disable
0
1
1= DEVID_SEL Rebrand (GSYNC)
0= DEVID_SEL Original (non-GSYNC)
0
1
1= PCIE_CFG Low Power
0= PCIE_CFG High Power
0
1= VGA_DEVICE Enable
1
0= VGA_DEVICE Disable
0
1
0
1
17,18,19,20,22,23,24,25,29,30,31,32,34,66,74,77
0
15,16,28,29,66
1
0
1
Title
Title
Title
[26] GPU 4/9-STRAPS,XTAL
[26] GPU 4/9-STRAPS,XTAL
[26] GPU 4/9-STRAPS,XTAL
0
Size
Size
Size
Document Number
Document Number
Document Number
1
6-71-PB500-D03
6-71-PB500-D03
6-71-PB500-D03
A3
A3
A3
PB50EF
PB50EF
PB50EF
Date:
Date:
Date:
Friday, December 07, 2018
Friday, December 07, 2018
Friday, December 07, 2018
2
Schematic Diagrams
1
D
1V8_AON
R162
*100K_04
BK6
XTALOUTBUFF
Sheet 26 of 91
BM6
R143
10K_04
GPU 4/6
C1358
C
12p_50V_NPO_04
B
1V8_AON
A
1V8_RUN
R e v
R e v
R e v
D03
D03
D03
Sheet
Sheet
Sheet
26
26
26
o f
o f
o f
91
91
91
1
GPU 4/6 B - 27
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