Datasheet

5
SAM9G25 [DATASHEET]
11032BS–ATARM–09-Jul-13
3. Signal Description
Table 3-1 gives details on the signal names classified by peripheral.
Table 3-1. Signal Description List
Signal Name Function Type Active Level
Clocks, Oscillators and PLLs
XIN Main Oscillator Input Input
XOUT Main Oscillator Output Output
XIN32 Slow Clock Oscillator Input Input
XOUT32 Slow Clock Oscillator Output Output
VBG Bias Voltage Reference for USB Analog
PCK0-PCK1 Programmable Clock Output Output
Shutdown, Wakeup Logic
SHDN Shut-Down Control Output
WKUP Wake-Up Input Input
ICE and JTAG
TCK Test Clock Input
TDI Test Data In Input
TDO Test Data Out Output
TMS Test Mode Select Input
JTAGSEL JTAG Selection Input
RTCK Return Test Clock Output
Reset/Test
NRST Microcontroller Reset I/O Low
TST Test Mode Select Input
NTRST Test Reset Signal Input
BMS Boot Mode Select Input
Debug Unit - DBGU
DRXD Debug Receive Data Input
DTXD Debug Transmit Data Output
Advanced Interrupt Controller - AIC
IRQ External Interrupt Input Input
FIQ Fast Interrupt Input Input
PIO Controller - PIOA - PIOB - PIOC - PIOD
PA0-PA31 Parallel IO Controller A I/O
PB0-PB18 Parallel IO Controller B I/O
PC0-PC31 Parallel IO Controller C I/O
PD0-PD21 Parallel IO Controller D I/O