Design Guide
209
Schematic Checklist
13.5
CK408 Schematic Checklist
Table 13-5. CK408 Schematic Checklist
Checklist Items
Recommendations
Reason/Impact
66BUFF[2:0]
•
Connect to a P64H2 using a series
43
Ω
± 5% resistor.
•
Refer to
.
66IN
•
No Connect.
3V66_0
•
Connect to ICH3-S using a series
43
Ω
± 5% resistor.
•
Refer to
.
3V66_1_VCH
•
Connect to MCH using a series
43
Ω
± 5% resistor.
•
Refer to
.
CPU[3:0]
CPU[3:0]#
•
Connect to the processor, MCH, or ITP
using a series 33
Ω
± 5% resistor, and
terminate to GND through a 49.9
Ω
± 1%
resistor. On the ITP port, use a 10 k
Ω
± 5%
pull-up resistor to V3_CLK close to CK408B.
•
Refer to
.
DOT_48MHz
•
No Connect.
IREF
•
Terminate to GND through a 475
Ω
± 1%
resistor.
MULT0
•
Terminate to V3_CLK through a series
10 k
Ω
± 5% resistor.
PCI[4:0]
•
Connect to a series 33
Ω
± 5% resistor for
PCI33_CLK33, VIDEO_CLK33,
FWH_CLK33, SIO_CLK33, and
LPC_CLK33.
•
Refer to
.
PCI[6:5]
•
No Connect.
PCIF[0]
•
Connect to a series 33
Ω
± 5% resistor for
ICH3_CLK33.
•
Refer to
.
PCIF[2:1]
•
No Connect.
PCI_STOP#
•
Terminate to V3_CLK through a 10 k
Ω
± 5%
resistor.
PWRDWN#
•
Connect to SLP_S3_N.
REF0
•
Connect to a series 22
Ω
± 5% resistor for
CLK 14 output to LPC, VIDEO, SIO and
ICH3-S.
•
Refer to
.
SEL[1]
•
Terminate to V3_CLK through a 10 k
Ω
± 5%
resistor, and terminate to GND through a
10 k
Ω
± 5% resistor.
SCLK, SDTA
•
Connect to 3V SMBus partition.
USB_48MHz
•
Connect to ICH3-S using a 33
Ω
± 5%
series resistor to ICH3_CLK48.
•
Refer to
.
VDD, VDD_48MHz
VDDA
•
Terminate to V3_CLK_A.
•
Refer to
VSS, VSS_48MHz
VSS_IREF
•
Terminate to GND.
•
Refer to
VTT_PWRGD#
•
Terminate to GND through 1 k
Ω
± 5%
resistor.
XTAL_IN
XTAL_OUT
•
Terminate to GND.
Содержание Xeon
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