AM4100
Configuration
ID 36126, Rev. 2.0
Page 4 - 9
P R E L I M I N A R Y
4.6
Host CPU Registers
The following registers are special registers which the AM4100 uses to watch and/or configure
the onboard hardware special features and the AMC control signals.
Normally, only the system Firmware uses these registers, but they are documented here for
application use as required.
4.6.1
Memory Configuration Register
The Memory Configuration Register is used to inform the firmware about the memory of the
AM4100.
Note ...
Take care when modifying the contents of these registers as the NetBootLoader
may be relying on the state of the bits under its control.
Table 4-10: Memory Configuration Register
REGISTER NAME
MEMORY CONFIGURATION REGISTER
ADDRESS
0xEC00_0002
BIT
NAME
DESCRIPTION
RESET
VALUE
ACCESS
7
Res
Reserved
0
R
6 - 5
MEM_SP DDR2 memory speed:
00 = DDR2 400 MHz
01 = DDR2 528 MHz
10 = DDR2 600 MHz
11 = Reserved
N/A
R
4
ECC
Error Checking and Correcting:
0 = ECC not enabled
1 = ECC enabled
1
R
3
Res.
Reserved
0
R
2 - 1
MEM_SZ Memory chip size:
00 = Chip size 256 Mbit
01 = Chip size 512 Mbit
10 = Chip size 1 Gbit
11 = Chip size 2 Gbit
N/A
R
0
MEM_BK Memory bank:
0 = One physical bank is populated
1 = Two physical banks are populated
N/A
R
Summary of Contents for AM4100
Page 19: ...AM4100 Introduction ID 36126 Rev 2 0 Page 1 1 Introduction Chapter 1 1 P R E L I M I N A R Y...
Page 57: ...AM4100 Installation ID 36126 Rev 2 0 Page 3 1 Installation Chapter 1 3 P R E L I M I N A R Y...
Page 65: ...AM4100 Configuration ID 36126 Rev 2 0 Page 4 1 Configuration Chapter 1 4 P R E L I M I N A R Y...
Page 89: ...AM4100 NetBootLoader ID 36126 Rev 2 0 Page 5 1 NetBootLoader Chapter 1 5 P R E L I M I N A R Y...
