Toshiba Xeon 2.8GHz UPG3843W 用户手册
产品代码
UPG3843W
Intel® Xeon™ Processor with 512 KB L2 Cache
18
Datasheet
The AC low-pass requirements, with input at V
CC
and output measured across the capacitor (C
A
or
C
IO
), is as follows:
•
< 0.2 dB gain in pass band
•
< 0.5 dB attenuation in pass band < 1 Hz (see DC drop in next set of requirements)
•
> 34 dB attenuation from 1 MHz to 66 MHz
•
> 28 dB attenuation from 66 MHz to core frequency
. For recommendations on implementing the filter
refer to the appropriate platform design guidelines.
Figure 1. Typical V
CCIOPLL
, V
CCA
and V
SSA
Power Distribution
VCC
VCCA
VSSA
VCCIOPLL
L1/L2
L1/L2
C
C
Processor
PLL
R-Socket
R-Trace
R-Socket
R-Socket
R-Trace
Processor interposer "pin"
Baseboard via that connects
filter to VCC plane
Trace
< 0.02 Ω
Socket pin