ATA5423_06 ATMEL [ATMEL Corporation], ATA5423_06 Datasheet - Page 6

• Manufacturer Part Number: ATA5423_06
• Description: UHF ASK/FSK Transceiver
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 1-3.
6
ATA5423/25/28/29
SDO_TMDO
DEM_OUT
SDI_TMDI
N_RESET
433_N868
RF_OUT
RX_TX1
RX_TX2
R_PWR
PWR_H
Block Diagram
XTAL1
XTAL2
CDEM
RF_IN
RSSI
SCK
CLK
IRQ
CS
Table 1-1.
µC_Interface
LNA
RX/TX
switch
Pin
PA
42
43
44
45
46
47
48
RF Transceiver
Synthesizer
Frequency
Demodulator
RX_ACTIVE
IF-amplifier
Data Slicer)
Fract.-N-
Processing
FSK/ASK
Data filter
IF-filter
Pin Description (Continued)
(Mixer
Symbol
Signal
GND
NC
NC
T4
T3
T2
T1
Frontend Enable
PA_Enable (ASK)
TX_DATA (FSK)
RX/TX
FREQ
FREF
Demod_Out
Function
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
13
TX/RX - Data buffer
Control register
Bit-check logic
Status register
Digital Control
Polling circuit
XTO
SPI
Logic
Reset
Regulators
Switches
Wake-up
Supply
Power
Reset
PWR_ON
TEST1
TEST2
T1
T2
T3
T4
T5
VS2
VS1
VAUX
VSOUT
4841C–WIRE–05/06