Layout Checklist
212
Design Guide
COMP[1:0]
ODTEN
SKTOCC#
TESTHI[6:0]
VID[4:0]
•
There are no routing requirements for these
signals.
•
Enables processor on-die
termination.
•
Input.
•
Refer to
Reserved
•
Reserved signals must remain as a No
Connect (NC).
SM_ALERT#
SM_CLK
SM_DAT
SM_EP_A[2:0]
SM_TS_A[1:0]
SM_WP
•
Should be connected to the SMBus
controller on 3.3 V partition.
•
SMBus I/O.
•
Refer to
.
VCCA
•
To satisfy damping requirements, total series
resistance in the filter (from VCC_CPU to the
top plate of the capacitor) must be at least
0.35
Ω
. It includes the minimum DCR of the
inductor, and any resistance (routing or
discrete components) between VCC_CPU
and capacitor top plate.
•
The total maximum resistance cannot be
greater than 1.1
Ω
as measured from VCC
(more specifically, the baseboard via that
connects the PLL filter to the VCC plane) to
the processor VCCA interposer pin. Also,
maximum trace resistance from the filter
capacitor to processor socket pin should be
less than 0.02
Ω
.
•
An isolated power for internal
PLL.
•
Refer to
VSSA
VCCIOPLL
•
There are no routing requirements for these
signals.
•
Refer to
VCCSENSE
VSSSENSE
•
Route traces using 5/15 mil spacing.
•
Place via next to the processor socket’s pin
for measurement of VCC_CPU/VSS.
•
Refer to
NOTES:
1. A[35:3]# pins on the processor correspond to HA[35:3]# pins on the MCH.
2. ADSTB[1:0]# pins on the processor correspond to HADSTB[1:0]# pins on the MCH.
3. DSTBN[3:0]# pins on the processor correspond to HADSTBN[3:0]# pins on the MCH.
4. DSTBP[3:0]# pins on the processor correspond to HADSTBP[3:0]# pins on the MCH.
5. D[63:0]# pins on the processor correspond to HD[63:0]# pins on the MCH.
6. REQ[4:0]# pins on the processor correspond to HREQ[4:0]# pins on the MCH.
7. The RESET# pin on the processor corresponds to the CPURST# pin on the MCH.
8. The TRDY# pin on the processor corresponds to the HTRDY# pin on the MCH.
Table 14-1. Processor Layout Checklist (Sheet 2 of 2)
Checklist Items
Recommendations
Comments
Содержание Xeon
Страница 24: ...Introduction 24 Design Guide This page is intentionally left blank ...
Страница 30: ...Component Quadrant Layout 30 Design Guide This page is intentionally left blank ...
Страница 34: ...Platform Stack Up and Component Placement Overview 34 Design Guide This page is intentionally left blank ...
Страница 52: ...Platform Clock Routing Guidelines 52 Design Guide This page is intentionally left blank ...
Страница 66: ...System Bus Routing Guidelines 66 Design Guide This page is intentionally left blank ...
Страница 118: ...Intel 82870P2 P64H2 118 Design Guide This page is intentionally left blank ...
Страница 146: ...I O Controller Hub 146 Design Guide This page is intentionally left blank ...
Страница 148: ...Debug Port 148 Design Guide This page is intentionally left blank ...
Страница 210: ...Schematic Checklist 210 Design Guide This page is intentionally left blank ...
Страница 220: ...Layout Checklist 220 Design Guide This page is intentionally left blank ...
Страница 222: ...Schematics 222 Design Guide This page is intentionally left blank ...