Chapter 9: Using User Flash Memory in MAX II Devices
Creating Memory Content File
9–45
Figure 9–50.
Memory Map for 2-Kbit Memory Initialization
MIF or HEX File Contents – to represent
the actual data and address size for the UFM block
2-Kbit altufm_i2c Megafunction
Logical Memory Contents
FFh
1FFh
Address
80h
in logical memory maps to
address 180h in the MIF/HEX file. FFh in logical
memory maps to 1FFh in the MIF/HEX file, and all
data in between follows the order in the
logical memory
180h
17Fh
80h
7Fh
080h
Lower Half – Addresses
00h to 7Fh
07Fh
Address 00h in logical memory maps to
address 000h in the MIF/HEX file. Address 7Fh in
logical memory maps to 07Fh in the MIF/HEX file,
and all data in between follows the order in the
logical memory
000h
This section of the UFM is unused –
the MIF/HEX file contents should be set to
all '1' for addresses 080h to 17Fh
Upper Half – Addresses
80h
to FFh
00h
Memory Map for 4-Kbit Memory Initialization
shows the memory map initialization for the altufm_i2c megafunction of
4-Kbit memory. The altufm_i2c megafunction byte address location of
00h
to
FFh
is
mapped to the UFM block address location of
000h
to
0FFh.
The altufm_i2c
megafunction byte address location of
100h
to
1FFh
is mapped to the UFM block
address location of
100h
to
1FFh.
Figure 9–51.
Memory Map for 4-Kbit Memory Initialization
4-Kbit altufm_i2c Megafunction
Logical Memory Contents
1FFh
1FFh
Address 100h in logical memory maps to
100h in the MIF/HEX file. Address 1FFh in logical
memory maps to 1FFh in the MIF/HEX file, and all
data in between follows the order in the
logical memory
100h
FFh
Lower Half – Addresses
00h to FFh
100h
0FFh
Address 00h in logical memory maps to
000h in the MIF/HEX file. Address FFh in logical
memory maps to 0FFh in the MIF/HEX file, and all
data in between follows the order in the
logical memory
00h
000h
MIF or HEX File Contents – to represent
the data and address size for the UFM block
Upper Half – Addresses
100h to 1FFh
Memory Map for 8-Kbit Memory Initialization
shows the memory map initialization for the altufm_i2c megafunction of
8-Kbit memory. The altufm_i2c megafunction of
8-Kbit memory fully utilizes all the memory locations in the UFM block.
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