MENMON
MEN Mikro Elektronik GmbH
100
20A014-00 E2 – 2007-08-16
4.5.1.2
Ethernet External Loopback Test
This test is the same as the Ethernet Internal Loopback Test, but requires an external
loopback connector. Before sending frames, the link state is monitored. If it is not
ok within 2 seconds, the test fails.
Checks:
• Connection between CPU and LAN controller
• Connection between LAN controller and PHY
• Connection between PHY and physical connector
Does not check:
• Interrupt line
• All LAN speeds
4.5.2
SDRAM and FRAM
Table 36.
MENMON – Diagnostic tests: SDRAM and FRAM
4.5.2.1
Quick RAM Test
This quick test checks most of the connections to the RAM chips but does not test
all RAM cells. It executes very quickly (within milliseconds).
This test is non-destructive (saves/restores original RAM content).
Checks:
• All address lines
• All data lines
• Byte enable signals
• Indirectly, checks clock and other control signals
Does not check:
• SDRAM cells
• SO-DIMM SPD EEPROM
• Burst mode
Test Name
Description
Availability
SDRAM
Quick SDRAM connection test
Groups: POST AUTO
Always
SDRAM_X
Full SDRAM test
Groups: NONAUTO ENDLESS
Always
FRAM
Quick FRAM test
Groups: POST AUTO
A14C is known to have
FRAM
FRAM_X
Full FRAM test
Groups: NONAUTO ENDLESS