Rainbow Electronics ATR0621 - Manual (Page 14)

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