Rainbow Electronics ATR0621 - Manual (Page 3)

3
4890AS–GPS–09/05
ATR0621 [Preliminary]
Figure 1-1. Block Diagram
Embedded
ICE
In
terf
ace t
o
Off-Chi
p
Memo
ry
(E
BI)
SRAM 128K
ROM 384K
B R I D G E
JT
AG
AS
B
PDC2
USB
USART1
USART2
SPI
PIO
2
Contr
o
ller
W
a
tc
hdog
Sp
ecial
Func
ti
on
Reset Con- tr
ol
le
r
Ad
van
ced
Po
w
e
r
Man
ag
e-
ment
Contr
olle
r
SDM
Ge
ne
ra
tor
GP
S
Accelerator
GP
S
Co
rrelat
o
rs
PIO
2
PIO
2
ARM7TDMI
AP
B
Advanced In
te
rr
upt
Contr
o
lle
r
SRAM
RTC
NSLEEP
NSHDN
XT_IN
NRESET
TMS
TCK
TDO
TDI
NTRST
DBG_EN
EM_DA0
EM_DA15
EM_A1
EM_A19
CLK23
RF_ON
P0/NANTSHORT
P15/ANTON
P31/RXD1
P18/TXD1
P22/RXD2
P21/TXD2
P2/BOOT_MODE
P3/nCS1
P4/nCS0
P5/NWE/NWR0
P6/NOE/NRD
P11/EM_A21
P10/EM_A0/NLB
P16/NEEPROM
P8/STATUSLED
P28/EM_A20
P30/AGCOUT0
P7/NUB/NWR1
Po
w
e
r
Su
p
p
ly
Man
ag
er
LDO_EN
LDO_IN
LDO_OUT
LDOBAT_IN
VBAT
P1/GPSMODE0
P12/GPSMODE2
P13/GPSMODE3
P17/GPSMODE5
P23/GPSMODE7
P24/GPSMODE8
P26/GPSMODE10
P27/GPSMODE11
P29/GPSMODE12
P19/GPSMODE6
P25/NAADET0
P14/NAADET1
P9/EXTINT0
SIGHI0
SIGLO0
VBAT18
XT_OUT
P20/TIMEPULSE
US
B
T
ran
sceiver USB_DM
USB_DP
Time
r
Counter