TAM-3517 HARDWARE MANUAL rev B
July 3 2012, TechNexion
59
8.13
Pull-up or Pull-down Signals Description
Pin #
Signal Name
Mode
Voltage
Resistor
Pull up/down
24
I2C3_sda
0
3.3
4.7kΩ
Up
GPIO_185
4
Safe mode
7
38
I2C3 SCL
0
3.3
4.7kΩ
Up
GPIO_184
4
safemode
7
25
I2C2 SDA
0
3.3
4.7kΩ
Up
GPIO_183
4
Safe_mode
7
23
I2C2 SCL
0
3.3
4.7kΩ
Up
GPIO_168
4
Safe_mode
7
8.14
Boot Option
SIGNAL NAME
DESCRIPTION
SYS_BOOT0
1
SYS_BOOT1
1
SYS_BOOT2
1
SYS_BOOT3
1
SYS_BOOT4
0
SYS_BOOT5
1
SYS_BOOT6
1
SYS_BOOT7
0
SYS_BOOT8
0
Six external pins (sys_boot[5:0]) are used to select interfaces or devices used for booting. The
sys_boot[6] pin is used to select whether the internal oscillator is bypassed. The sys_boot[7] pin
is used to select whether to use external 32K clock supply or 32K clock is generated internally.
Boot configuration pins sys_boot[5:0] are sampled and latched onto
CONTROL.CONTROL_STATUS register and sys_boot[8:7] are sampled and latched onto
CONTROL.CONTROL_DEVCONF2 register following a power-on reset.
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