ATR0622-EK1 ATMEL [ATMEL Corporation], ATR0622-EK1 Datasheet - Page 9

• Manufacturer Part Number: ATR0622-EK1
• Description: GPS Baseband GPS Baseband
• Manufacturer: ATMEL [ATMEL Corporation]

3.2
Table 3-2.
4890H–GPS–08/08
Note:
Module
USART
APMC
AGC
USB
RTC
EBI
AIC
SPI
WD
PIO
Signal Description
1. The USB transceiver is disabled if VDD_USB < 2.0V. In this case the pins USB_DM and USB_DP are connected to GND
(internal pull-down resistors). The USB transceiver is enabled if VDD_USB is within 3.0V and 3.6V.
EM_DA0 to EM_DA15 External memory data bus
EM_A0 to EM_A21
ATR0621P Signal Description
NCS0 to NCS1
NCS2 to NCS3
BOOT_MODE
AGCOUT0-1
NSS/NPCS0
EXTINT0-1
NWD_OVF
NPCS1-3
USB_DM
USB_DP
NSLEEP
XT_OUT
RXD1-2
NSHDN
TXD1-2
SCK1-2
RF_ON
NWR0
NWR1
XT_IN
Name
P0-31
MOSI
MISO
NWE
NRD
NOE
NUB
SCK
NLB
Function
External memory address bus
Chip select
Chip select
Lower byte write signal
Upper byte write signal
Read signal
Write enable
Output enable
Upper byte select (16-bit SRAM)
Lower byte select (16-bit SRAM)
Boot mode input
Transmit data output
Receive data input
External synchronous serial clock
USB data (D+)
USB data (D-)
External interrupt request
Automatic gain control
Sleep output
Shutdown output
Oscillator input
Oscillator output
SPI clock
Master out slave in
Master in slave out
Slave select
Slave select
Watchdog timer overflow
Programmable I/O port
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Type
Input
Input
Input
Input
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Active Level Comment
High/
Edge
Low/
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
All valid after reset
Internal pull-down resistor
Output high in RESET state
Output high in RESET state
Output high in RESET state
Output high in RESET state
Output high in RESET state
Output high in RESET state
Output high in RESET state
Output high in RESET state
Output high in RESET state
PIO-controlled after reset,
internal pull-down resistor
PIO-controlled after reset
PIO-controlled after reset
PIO-controlled after reset
Interface to ATR0601
PIO-controlled after reset
Interface to ATR0601
PIO-controlled after reset
Interface to ATR0601
Connect to pin LDO_EN
RTC oscillator
RTC oscillator
PIO-controlled after reset
PIO-controlled after reset
PIO-controlled after reset
PIO-controlled after reset
PIO-controlled after reset
PIO-controlled after reset
Input after reset
(except P3 to P7, P10, P11, P28)
ATR0621P
9