Motorola MVME2400 Series Programmer's Reference Manual page 298

MVME2400 VPD Reference Information
A
ID# Size Description
06 04 MPU External Clock Frequency in Hertz (for example,
100,000,000 decimal, etc.).
This is also called the local processor bus frequency.
07 04 Reference Clock Frequency in Hertz (for example,
32,768 decimal, etc.). This value is the frequency of the
crystal driving the OSCM.
08 06 Ethernet Address (for example, 08003E26A475, etc.)
09 Variable MPU Type (for example, 601, 602, 603, 604, 750, 801,
821, 823, 860, 860DC, 860DE, 860DH, 860EN,
860MH, etc.)
0A 4 EEPROM CRC
This packet is optional. This packet would be utilized in
environments where CRC protection is required. When
computing the CRC this field (that is, 4 bytes) is set to
zero.
This CRC only covers the range as specified the size
field.
0B 9 FLASH Memory Configuration
A table found later in this document further describes
this packet.
0C TBD VLSI Device Revisions/Versions
0D 04 Host PCI-Bus Clock Frequency in Hertz (for example,
33,333,333 decimal, etc.)
0E Variable L2 Cache Configuration
A table found later in this document further describes
this packet.
0F- Reserved
BF
C0- User Defined
FE
An example of a user defined packet could be the type
of LCD panel connected in an MPC821 based
application.
FF N/A Termination Packet (follows the last initialized data
packet)
A-2
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Table A-1. VPD Packet Types (Continued)
Data Type
Integer (4-byte)
Integer (4-byte)
Binary
ASCII
Integer (4-byte)
Binary
Binary
Integer (4-byte)
Binary
N/A
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Notes
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2
3, 4
1
2
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