atr0621p ATMEL Corporation, atr0621p Datasheet - Page 18

• Manufacturer Part Number: atr0621p
• Description: Atr0621p Gps Baseband Processor
• Manufacturer: ATMEL Corporation

Table 3-15.
18
Pin Name
P24/GPSMODE8/MOSI
P25/NAADET0/MISO
P26/GPSMODE10/NSS/
NPCS0
P27/GPSMODE11/NPCS1
P28/EM_A20/NCS3
P29/GPSMODE12/NPCS3
P30/AGCOUT0
P31/RXD1
EM_DA0 – EM_DA15
ATR0621P
Recommended Pin Connection (Continued)
Recommended External Circuit
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section
page
Internal pull-down resistor, leave open if Antenna Supervision functionality is unused. Can be left open if
configured as output by user application.
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section
page
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section
page
Output in default ROM firmware: leave open, only needs pull-up resistor to VDD18 or pull-down resistor to
GND if used as GPIO input by user application and is not always driven from external sources.
Internal pull-up resistor, can be left open if the GPSMODE feature is not used or configured as output by
user application. Refer to GPSMODE definitions in section
page
Internal pull-down resistor, leave open.
Internal pull-up resistor, leave open if serial interface is not used.
If no external memory is used, could be leave open (internal pull-down).
11.
11.
11.
11.
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
“Setting GPSMODE0 to GPSMODE12” on
4890G–GPS–01/08