Gigabyte GA-880GM-D2H Wiring Diagram page 12

5
VCC3
BC892 BC892 BC893 BC893 BC894 BC894 BC895 BC895
1U/6/Y5V/10V/Z 1U/6/Y5V/10V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z
D
1- PLACE ALL THE SERIES TERMINATION
RESISTORS AS CLOSE TO U800 AS
POSSIBLE
2- ROUTE ALL SRCCLKTx AND SRCCLKCx
AS DIFFERENT PAIR RULE
3- PUT DECOUPLING CAPS CLOSE TO U800
POWER PIN
C
C9 C9 22P/4/NPO/50V/J 22P/4/NPO/50V/J
C10 C10 22P/4/NPO/50V/J 22P/4/NPO/50V/J
watch dog --
RESTORE# 接 RESET
<26,28>
OSC_14M_NB
B
RS740 3.3V 33R serial
RX780 1.8V 82.5R/130R
RS780 1.1V 158R/90.9R
(Single-ended)
A
5
4
BC896 BC896 BC897 BC897 BC898 BC898
0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z
U4 U4
1
VCC3 VDDHTT
5
VDDREF
20
VDDSRC
21
VDDSRC
30
VDDSB
37
VDDATIG
42
VDD
45
VDDA
49
VDDCPU
9
VDD48
6
GNDREF
12
GND48
19
GNDSRC
22
GNDSRC
29
GNDSB
33
GNDATIG
36
GNDATIG
43
GND
44
GNDA
48
GNDCPU
54
GNDHTT
X7 X7
9LPRS482 / RTM880T-792 9LPRS482 / RTM880T-792
14.318M/16p/20ppm/49US/40/D 14.318M/16p/20ppm/49US/40/D 7
X1
8
X2
<8,14,27,28> SMBCLK 13
SMBCLK
<8,14,27,28> SMBDATA
14
SMBDAT
R62 R62 1K/4/1 1K/4/1 52
VCC3
*PD#
R63 R63 22/4 22/4
53
RESET *RESTORE#
R64 R64 1K/4/1/X 1K/4/1/X
VCC3
RTM880T-792_TSSOP56/[10HL6-1A0880-30R] RTM880T-792_TSSOP56/[10HL6-1A0880-30R]
**SEL_HTT66/REF0
Low
IN
High
4
3
BC903 BC903
BC899 BC899 BC36 BC36 0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z
0.1U/4/Y5V/16V/Z 0.1U/4/Y5V/16V/Z 22u/8/X5R/6.3V/M 22u/8/X5R/6.3V/M
51
CPUK8_0T CPUCLK0_H <6>
50
CPUCLK0_L <6>
CPUK8_0C
47
CPUK8_1T
46
CPUK8_1C
41
NBSRC_CLKP <10>
ATIG0T
40
NBSRC_CLKN <10>
ATIG0C
39
ATIG1T SRCCLK_3GIO_A <17>
38
ATIG1C -SRCCLK_3GIO_A <17>
35
ATIG2T
34
ATIG2C
32
SB_SRC0T
31
SB_SRC0C
28
SB_SRC1T
27
SB_SRC1C
26
SRC0T PCIE1_CLK <17>
25
-PCIE1_CLK <17>
SRC0C
24
SRCCLK_LAN <19>
SRC1T
23
SRC1C -SRCCLK_LAN <19>
18
SRC2T SBSRC_CLKP <13>
17
SRC2C SBSRC_CLKN <13>
16
SBLINK_CLKP <10>
SRC3T
15
SBLINK_CLKN <10>
SRC3C
56
HTT0T/66M NBHT_REFCLKP <10>
55
HTT0C/66M NBHT_REFCLKN <10>
SIO_CLOCK_R R51 R51 22/4 22/4
11
48Mz_0
48M_USB_R R61 R61 22/4 22/4
10
48Mz_1
R74 R74 1K/4/1/X 1K/4/1/X
R73 R73 1K/4/1 1K/4/1
R71 R71 1K/4/1/X 1K/4/1/X
4
**SEL_HTT66/REF0
R68 R68 1K/4/1/X 1K/4/1/X
3
REF1
R65 R65 158/4/1 158/4/1
2
REF2
RS740 Stuff 33ohm
RS780 Stuff 158ohm
★ ★ ★ ★
OUT 3.3V 14.318MHz REF output.
100MHz differential HT clock, (Internal 120K pull-down)
66MHz 3.3V single ended HT clock.
3
2
NB CLOCK INPUT TABLE
NB CLOCKS RS740 RX780
HT_REFCLKP
66M SE(SE) 100M DIFF 100M DIFF
HT_REFCLKN NC 100M DIFF 100M DIFF
REFCLK_P
14M SE (3.3V) 14M SE (1.8V) 14M SE (1.1V)
REFCLK_N NC NC vref
GFX_REFCLK* 100M DIFF 100M DIFF 100M DIFF
GPP_REFCLK NC 100M DIFF 100M DIFF(OUT)
GPPSB_REFCLK 100M DIFF 100M DIFF 100M DIFF
* the GFX_REFCLK input is required for all cases
LPC48 <24>
USB48M <14>
VCC3
VCC3
OSC_14M_NB <10>
R66 R66
90.9/4/1 90.9/4/1
RS780 Stuff only
2
1
RS780
100M DIFF
100M DIFF
Title Title Title
ICS9LPRS477 ICS9LPRS477 ICS9LPRS477
Size Size Size Document Number Document Number Document Number Rev Rev Rev
Custom Custom Custom GA-880GM-D2H GA-880GM-D2H GA-880GM-D2H 1.32 1.32 1.32
Date: Date: Date: Friday, July 23, 2010 Friday, July 23, 2010 Friday, July 23, 2010 Sheet Sheet Sheet 12 12 12 of of of 30 30 30
1
D
C
B
A