Intel 820E Benutzerhandbuch
Intel
®
820E Chipset
R
176
Design
Guide
4.9.2.
DRCG+ Frequency Selection Schematic
The DRCG+ frequency can be selected using two GPIOs connected to the MULT[0:1] pins, as shown in
the following figure. This allows selection of all frequencies supported by the Intel 820E chipset.
the following figure. This allows selection of all frequencies supported by the Intel 820E chipset.
Figure 96. DRCG+ Frequency Selection
drcg+freq_sel
REFCLK
PWRD#
STOPB#
MULTO
MULT1
S0
S1
GND
PCLKM
SYNCLKN
NC
PWRD#
STOPB#
MULTO
MULT1
S0
S1
GND
PCLKM
SYNCLKN
NC
2
12
11
15
14
24
23
13
11
15
14
24
23
13
6
7
7
19
GPO1
GPO2
GPO2
17
21
4
8
5
GNDO1
GNDO2
GNDP
GNDC
GNDI
CLK
CLKB#
20
18
18
1
10
16
22
3
9
VDDIR
VDDIPD
VDDO1
VDDO2
VDDP
VDDC
U?
DRCG