SMART Embedded Computing RTM-ATCA-F140 Series, Инструкция по установке и использованию

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54 RTM-ATCA-F140 Series Installation and Use (6806800M97M)
Functional Description
Functional Description
4.2.1 FRU Serial EEPROM
The RTM-ATCA-F140 provides a 128Kb (16Kbyte) I
2
C serial EEPROM. This is a
24LC128T-type device. The EEPROM resides at I
2
C address 0xA0. It is supplied with
+3.3V management power and thus is available regardless of payload power.
This serial EEPROM is intended to hold FRU data and any additional parameters that are
required.
4.2.2 Temperature Sensors
The RTM-ATCA-F140 has provision for three temperature sensors that are located on the
primary side of the RTM close to the top, middle and bottom. These sensors are I
2
C-based
LM75-type devices.
The over-temperature outputs from the three sensors are connected to the RTM FPGA to
allow an interrupt to the service processor to be generated in the event of an over-
temperature condition.
The I
2
C addresses for these devices are 0x90 (upper), 0x92 (middle) and 0x94 (lower).
4.2.3 LEDs
The RTM-ATCA-F140 provides four panel-visible LEDs that provide the standard ATCA
management LED functions:

Red - Out of Service

Green - In Service

Blue - Hot swap (initializing/shutting down)

Amber - Attention
Table 4-1 Temperature Sensor Thresholds
Sensor
Noncritical
Threshold/C Critical
Threshold/C Nonrecoverable
Threshold/C
Upper 58 69 85
Middle 56 65 81
Lower 54 61 72