Datasheet

5
6062LS–ATARM–23-Mar-09
AT91SAM9261
3. Signal Description
Table 3-1. Signal Description by Peripheral
Signal Name Function Type Active Level Comments
Power
VDDIOM EBI I/O Lines Power Supply Power 1.65 V to 1.95V and 3.0V to 3.6V
VDDIOP Peripherals I/O Lines Power Supply Power 2.7V to 3.6V
VDDBU Backup I/O Lines Power Supply Power 1.08V to 1.32V
VDDPLL PLL Power Supply Power 3.0V to 3.6V
VDDOSC Oscillator Power Supply Power 3.0V to 3.6V
VDDCORE Core Chip Power Supply Power 1.08V to 1.32V
GND Ground Ground
GNDPLL PLL Ground Ground
GNDOSC Oscillator Ground Ground
GNDBU Backup Ground Ground
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
PLLRCA PLL Filter Input
PLLRCB PLL Filter Input
PCK0 - PCK3 Programmable Clock Output Output
Shutdown, Wakeup Logic
SHDN Shutdown Control Output Do not tie over VDDBU.
WKUP Wake-Up Input Input Accepts between 0V and VDDBU.
ICE and JTAG
TCK Test Clock Input No pull-up resistor.
RTCK Returned Test Clock Output No pull-up resistor.
TDI Test Data In Input No pull-up resistor.
TDO Test Data Out Output
TMS Test Mode Select Input No pull-up resistor.
NTRST Test Reset Signal Input Low Pull-up resistor.
JTAGSEL JTAG Selection Input
Pull-down resistor. Accepts
between 0V and VDDBU.
ETM
™
TSYNC Trace Synchronization Signal Output
TCLK Trace Clock Output
TPS0 - TPS2 Trace ARM Pipeline Status Output
TPK0 - TPK15 Trace Packet Port Output