ATA5423 ATMEL Corporation, ATA5423 Datasheet - Page 5

• Manufacturer Part Number: ATA5423
• Manufacturer: ATMEL Corporation

4841A–RKE–02/05
Table 1-1.
Pin
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
SDO_TMDO
RX_ACTIVE
DEM_OUT
SDI_TMDI
N_RESET
PWR_ON
Pin Description (Continued)
RX_TX2
RX_TX1
Symbol
VSOUT
TEST2
XTAL1
XTAL2
VSINT
CDEM
RSSI
GND
CLK
SCK
IRQ
NC
NC
NC
CS
T5
T4
T3
T2
T1
Function
Output voltage power supply for external devices
Test input, at GND during operation
Reference crystal
Reference crystal
Not connected
Microcontroller interface supply voltage
Output pin to reset a connected microcontroller
Interrupt request
Clock output to connect a microcontroller
Serial data out/transparent mode data out
Serial data in/transparent mode data in
Serial clock
Demodulator open drain output signal
Chip select for serial interface
Output of the RSSI amplifier
Capacitor to adjust the lower cut
GND pin to decouple LNA in TX mode
Switch pin to decouple LNA in TX mode
Input to switch on the system (active high)
Key input 5 (can also be used to switch on the system (active low))
Key input 4 (can also be used to switch on the system (active low))
Key input 3 (can also be used to switch on the system (active low))
Key input 2 (can also be used to switch on the system (active low))
Key input 1 (can also be used to switch on the system (active low))
Indicates RX operation mode
Not connected
Not connected
Ground/backplane
ATA5423/25/28/29 [Preliminary]
–
off frequency data filter
5