Artesyn MVME2500 ECC Installation and Use (August 2014) - Manual (Page 84)

Functional Description
MVME2500-ECC Installation and Use (6806800N30F) 84
4.19 Real-Time Clock Battery
A back-up battery based on the CR2325 specification is provided. It helps support the RTC
hold-up requirements that maintain the correct date and time after the backplane power is
switched off.
Note: The above temperature ranges do not support the storage temperatures specified for
the boards. The battery life will be reduced if the batteries are stored at temperatures outside
their range. Typically the BR series battery is the industrial type, and the CR is the commercial.
In this case, the Renata battery specification is better than the BR type. The battery type used
on the ENP2 board is the CR2325 from Renata.
4.20 Debugging Support
The following information shows the details of Artesyn debugging support as applied to the
MVME2500-ECC.
4.20.1 POST Code Indicator
The following table shows the LED status of the POST Codes. For the location of the POST Code
LEDs, see
Onboard LEDs, on page 45 .
Logic 1 means LED is "ON", Logic 0 means LED is "OFF."
Table 4-3 Real-Time Clock Battery
Batttery Part Number Range
ENP1 210688 (BR2325) -30C to +80C
ENP2 6006801A05(Renata
CR2325) -40C to +85C
Table 4-4 POST Code Indicator on the LED
Sequence D33 D32 D35 Description
1 0 0 0 U-boot has been copied from SPI flash to CPU cache.