ATSAM2195 ATMEL [ATMEL Corporation], ATSAM2195 Datasheet - Page 4

• Manufacturer Part Number: ATSAM2195
• Description: Audio Processing
• Manufacturer: ATMEL [ATMEL Corporation]

Table 2-5.
4
Pin Name
X1-X2
RESET
OUTVC18
PWROUT
PDWN
TEST0-TEST1-
TEST2
ATSAM2195
Miscellaneous group
Pin #
29, 28
9
35
39
37
36, 27, 32
Type
-
IN
PWR
PWR
IN
IN
Function
9.6 MHz crystal connection. An external 9.6 MHz clock can also be used on X1
(1.95Vpp max through 47 pF capacitor). X2 cannot be used to drive external
circuits.
Reset input, active low. This is a Schmitt trigger input, allowing direct connection
to an RC network
3.3V to 1.8 V regulator output. When 3.3V single supply application this pin can
be used to power VD18 pins, and VA18 pin through a serial inductor filter (better
result) or a 10 ohm resistor.
Decoupling capacitors 470 pF in parallel with 2.2 or 4.7 µF must be connected
between OUTVC18 and GND.
Power switch output. When 1.8V single supply application this pin can be used to
power VD18 pins, and VA18 pin through a serial inductor filter (better result) or a
10 ohm resistor.
Power down, active low. When power down is active, all digital outputs are set to
logic level 0, D0-D7 bus is set in high Z, analog outputs decrease to 0V, the PLL
and crystal oscillator are stopped.
3.3V single supply application: If the built-in regulator is used then 1.8V supply is
removed from the core. To exit from power down, PDWN must be set to VD33,
then RESET applied. When unused this pin must be connected to VD33.
1.8V single supply application: If the built-in power switch is used then 1.8V
supply is removed from the core. To exit from power down, PDWN must be set to
VD18, then RESET applied. When unused this pin must be connected to VD18
Test pins. Should be grounded
6308A–DRMSD–10-May-07