SAM4L Datasheet, PDF (26/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
3.2.4
3.2.5
ITM Trace Connections
If the ITM trace is enabled, the ITM will take control over the pin PA23, irrespectively of the I/O
Controller configuration. The Serial Wire Trace signal is available on pin PA23
Oscillator Pinout
The oscillators are not mapped to the normal GPIO functions and their muxings are controlled
by registers in the System Control Interface (SCIF) or Backup System Control Interface (BSCIF).
Refer to the Section 13. ”System Control Interface (SCIF)” on page 196 and Section 12. ”Backup
System Control Interface (BSCIF)” on page 154 for more information about this.
Table 3-6. Oscillator Pinout
3.2.6
1
1
G4
5
B9
13
17
B2
26
B2
2
2
G5
6
B8
14
18
B3
27
C2
Pin Name
PA00
XIN32
PA01
XOUT32
Oscillator Pin
XIN0
XIN32
XOUT0
XOUT32
Signals Description
The following table gives details on signal names classified by peripheral.
Table 3-7. Signal Descriptions List (Sheet 1 of 4)
Signal Name
Function
Type
Active
Level
Audio Bitstream DAC - ABDACB
CLK
D/A clock output
Output
DAC1 - DAC0
D/A bitstream outputs
Output
DACN1 - DACN0
D/A inverted bitstream outputs
Output
Analog Comparator Interface - ACIFC
ACAN1 - ACAN0
Analog Comparator A negative references Analog
ACAP1 - ACAP0
Analog Comparator A positive references Analog
ACBN1 - ACBN0
Analog Comparator B negative references Analog
ACBP1 - ACBP0
Analog Comparator B positive references Analog
ADC controller interface - ADCIFE
AD14 - AD0
Analog inputs
Analog
ADVREFP
Positive voltage reference
Analog
TRIGGER
External trigger
Input
Backup System Control Interface - BSCIF
Comments
26
42023C–SAM–02/2013