Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet
Product codes
AT91SAM9G25-EK
Evaluation Kit Hardware
4-14
Evaluation Kit (EK) User Guide
11115A–ATARM–27-Jul-11
4.2.4
Configuration
4.2.4.1
Chip Identification
The CM board may be equipped with any of the five processors, all sharing an identical BGA217 foot-
print. There are two resistors on the CM board for the purpose of identifying which of the five is the one
actually mounted.
print. There are two resistors on the CM board for the purpose of identifying which of the five is the one
actually mounted.
The tables below show in detail how the CM board, relative to different processors, determines the dedi-
cated “SELCONFIG” logic.
cated “SELCONFIG” logic.
Table 4-5. Resistor Identification
Resistor
SAM9G15
SAM9G25
SAM9G35
SAM9X25
SAM9X35
R49
Populated
Not Populated
R50
Not Populated
Populated
R87
Populated
Populated
R88
Not Populated
Not Populated
R101
Populated
Not Populated
Populated
Not Populated
Populated
R102
Not Populated
Populated
Not Populated
Populated
Not Populated
Table 4-6. Module Configuration Identification
SAM9G15
module
SAM9G35
module
SAM9X35
module
SAM9G25
module
SAM9X25
module
CM
Setting
R101
Populated
Populated
Populated
Not Populated
Not Populated
R102
Not Populated
Not Populated
Not Populated
Populated
Populated
SELCONFIG
(SODIMM200
pin 166)
High
High
High
Low
Low
EK
Setting
USART3
Not Selected
Not Selected
Not Selected
Selected
Selected
ETH1
Not Selected
Not Selected
Not Selected
Not Selected
Selected
DM
Setting
LCD
Selected
Selected
Selected
Not Selected
Not Selected