atr0621 ATMEL Corporation, atr0621 Datasheet - Page 14

• Manufacturer Part Number: atr0621
• Description: Gps Baseband Processor - Atmel Corporation
• Manufacturer: ATMEL Corporation

3.4
Figure 3-2.
14
ATR0601
External Connections for a Working GPS System
ATR0621 [Preliminary]
Example of an External Connection
+3V
(see Power Supply)
SIGH
SIGL
SC
P1
P2
The Antenna Supervisor Software will be configured as follows:
(see Power Supply)
1. Enable Control Signal
2. Enable Short Circuit Detection (power down antenna via ANTON if short is detected
3. Enable Open Circuit Detection via NAADET
via NANTSHORT)
+3V
See Table 3-15
See Table 3-15
See Table 3-15
See Table 3-15
See Table 3-15
See Table 3-15
GND
NC
NC
NC
NC
NC
NC
NC
NC
NC
SIGHI
SIGLO
CLK23
RF_ON
NSLEEP
NRESET
EM_DA0 - 15
EM_A1 - 19
P0 - 7
P9 - 15
P16 - 17
P19
P23 - 30
TMS
TCK
TDI
NTRST
TDO
TEST_MODE
DBG_EN
GND
NSHDN
LDO_EN
LDO_OUT
VDD18
LDO_IN
LDOBAT_IN
VBAT18
ATR0621
USB_DM
USB_DP
XT_OUT
TOUT1
XT_IN
P20
P31
P18
P22
P21
P8
NC
STATUS LED
TIMEPULSE
32.368 kHz
(see RTC)
USART 2
USART 1
Optional
Optional
Optional
USB
4890AS–GPS–09/05