Design Guide
101
Intel
®
82870P2 (P64H2)
8.2.2.1
Manually-Operated Retention Latch Sensor
The HxSWITCH signal is monitored by the Hot Plug Controller to determine whether or not a slot
should be powered. The MRL sensor, or slot switch, should be connected to the HxSWITCH pin
such that it drives this pin low to indicate that the slot is closed and can be powered on. When the
signal is driven high, it indicates that the slot should immediately be powered off. The MRL Sensor
in represented schematically as a switch in
The Slot Present pins on each hot-plug slot are connected directly to the HxPRSNT2# and
HxPRSNT1# pins on the P64H2.
Figure 8-7. Manually-Operated Retention Latch Sensor
Intel
®
P64H2
HxSWITCH
HxPRSNT1#
HxPRSNT2#
3.3V
3.3V
Slot Present 1
Slot Present 2
Slot
MRL Sensor
10 k
Ω
330
Ω
5.6 k
Ω
5.6 k
Ω
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 ...