User guide

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.
The tables below show in detail how the CM board, relative to different processors, determines the dedi-
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