Debugging Support; Post Code Indicator; Jtag Chain And Board; Table 4-7 Post Code Indicator On The Led - SMART Embedded Computing MVME2502 Installation And Use Manual

4.20

Debugging Support

The following information shows the details of SMART EC debugging support as applied to
the MVME2502.
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
Logic 1 means LED is ON, Logic 2 means LED is OFF.
Table 4-7
Sequence D33
1
2
3
4
5
6
7
8
4.20.2

JTAG Chain and Board

The MVME2502 is designed to work with separate JTAG board rather than with an on-
board JTAG multiplexer. The chip supports up to a 6-scan port and the board's boundary
scan requires the following to function: ASSET hardware, JTAG board, and JTAG cable.
The MVME2502 provides a 60-pin header that connects to the JTAG board via customize
cable.
The JTAG bypass will connect when no XMC or PMC is connected to its corresponding
locations. Once an external XMC or PMC is unmounted its corresponding JTAG bypass will
close, to complete the JTAG chain.
MVME2502 Installation and Use (6806800R96G)
On-board LEDs on page
POST Code Indicator on the LED
D34 D35
Off Off Off
Off On Off
Off On On
On Off Off
On Off On
On On Off
On On On
Off Off Off
50.
Description
U-boot has been copied from SPI flash to CPU cache.
Serial console has been initialized, some text is visible on
the terminal.
DDR has been initialized using SPD parameters, Execution
is still in the cache.
Execution has been relocated to RAM.
PCI has been initialized.
POST routines are finished.
Additional SW routines are finished.
U-boot prompt is visible on the terminal, can start loading
OS image from USB, Ethernet, SATA SSD, SD.
Functional Description
91