PEX 8624-AA RDK Hardware Reference Manual – Version 1.1
Copyright © 2010 by PLX Technology, Inc. All rights reserved
13
2.9.4
PEX 8624 Voltage Level Monitoring (D10 – D11)
The PEX 8624-AA RDK provides voltage level monitoring circuit to monitor the 1 volt and 2.5 volt power to the
PEX 8624. The circuit contains an Intersil multiple voltage supervisory ISL6132, two bi-color LEDs, D10 and D11,
and various value resistors. When the 1 volt or 2.5 volt is within the +/- 10% range the green LED will turn on.
Otherwise the red LED will be on. (See
Table 2-3
for details)
Table 2-3. Voltage Level Monitoring LED Functions
LED
Green LED on/ Red LED off
Green LED off/Red LED on
D8
1 volt to PEX 8624 /- 10% range
1 volt to PEX 8624 out of +/- 10% range
D9
2.5 volt to PEX 8624 /- 10% range 2.5 volt to PEX 8624 out of +/- 10% range
2.10 GPIO
Pins
The PEX 8624 has fourteen GPIO pins. All GPIO pins are connected to mictor connectors (MC1 and MC2) to be
used by external applications.
2.11 Reserved
Pins
The PEX 8624 has 9 STRAP_RESERVED pins. They are factory use only and should be set to know logic states.
Table 2-4
shows the list of these reserved pins and their connections in the RDK.
Table 2-4. Strap_Reserved Pin Connections
Name
Pin Location
Connections on PEX 8624-AA RDK
STRAP_RESERVED0
J4
Pull-down with a 1K ohm resistor
STRAP_RESERVED1
P2
Pull-down with a 1K ohm resistor
STRAP_RESERVED2
K5
Pull-up with a 4.7K ohm resistor
STRAP_RESERVED3
E2
Pull-down with a 1K ohm resistor
STRAP_RESERVED4
V12
Pull-down with a 1K ohm resistor
STRAP_RESERVED7
F3
Pull-up with a 4.7K ohm resistor
STRAP_RESERVED8
E12
Pull-down with a 1K ohm resistor
STRAP_RESERVED16
T13
Pull-down with a zero ohm resistor
STRAP_RESERVED17#
D18
Set DIP switch to OFF (logic ‘HIGH’)
Содержание PEX 8624-AA RDK
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