Table 2. SW1 Settings (continued)
4:1
CPU Speed
SYSCLK(MHz)
DDRCLK(MHz)
1001
X
125
100
1010
X
125
125
1011
X
125
133.33
1100
1600
133.33
66.67
1101
1600
133.33
100
1110
1600
133.33
125
1111
1600
133.33
133.33
For an SW1 value in the table above, 0 indicates on and 1 indicates off.
8.2 SW2 switch
The SW2 switch is reserved for debug testing purposes and is currently not in use. For an SW2 value, 0 indicates on and 1
indicates off. The default SW2 value is 1111.
8.3 SW3 switch
The SW3 switch is reserved for RCW bank selection and is currently not in use. For an SW3 value, 0 indicates on and 1
indicates off. The default SW3 value is 1111.
Table 3. SW3 Settings
3:1
Reserved (RCW_BANK_SELECT 0~2
4
RCW_SRC_SELECT
0: RCW source from SD card
1: RCW source from EEPROM
8.4 SW4 switch
The table below shows the SW4 settings, where value 0 indicates on and value 1 indicates off.
Table 4. SW4 Settings
P1
Auto power mode
0: Normal power on
1: Normal power on/off (default)
P2
CFG_TESTSEL_B
0: T4160 mode
1: T4240 mode (default)
Table continues on the next page...
Switch settings
T4240RDB Quick Start Guide, Rev 0, 11/2013
10
Freescale Semiconductor, Inc.
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
