4421-DKDB1 Silicon Laboratories Inc, 4421-DKDB1 Datasheet - Page 4

• Manufacturer Part Number: 4421-DKDB1
• Description: KIT DEV TEST EZRADIO SI4421 TRX
• Manufacturer: Silicon Laboratories Inc

Specifications of 4421-DKDB1

• Accessory Type: Test Card, Transceiver, 915MHz
• Wireless Frequency: 915 MHz
• Interface Type: SPI
• Modulation: FSK
• For Use With/related Products: EZRadio®
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PACKAGE PIN DEFINITIONS
Pin type key: D=digital, A=analog, S=supply, I=input, O=output, IO=input/output
Note: The actual mode of the multipurpose pins (pin 6 and 7) is determined by the TX/RX data I/O settings of the transceiver.
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
ARSSI
Name
DATA
DLCK
nRES
nSEL
nIRQ
nFFS
SDO
CFIL
nINT
SCK
FFIT
REF
VSS
VDD
FSK
CLK
RF2
RF1
XTL
SDI
VDI
Type
AIO
AIO
DIO
AIO
AIO
AIO
DO
DO
DO
DO
DO
DO
AO
DO
DI
DI
DI
DI
DI
DI
S
S
Function
Data input of the serial control interface
Clock input of the serial control interface
Chip select input of the serial control interface (active low)
Serial data output with bus hold
Interrupt request output (active low)
Transmit FSK data input (internal pull up resistor 133 k)
Received data output (FIFO not used)
FIFO select input (active low). In FIFO mode, when bit ef is set in Configuration Setting Command,
page 15 (internal pull up resistor 133 k)
Received data clock output (Digital filter used, FIFO not used)
External data filter capacitor connection (Analog filter used)
FIFO interrupt (active high). In FIFO mode, when bit ef is set in Configuration Setting Command
Microcontroller clock output
Crystal connection (the other terminal of crystal to VSS) or external reference input
External reference input. Use 33 pF series coupling capacitor
Open drain reset output with internal pull-up and input buffer (active low)
Ground reference voltage
RF differential signal input/output
RF differential signal input/output
Positive supply voltage
Analog RSSI output
Interrupt input (active low)
Valid data indicator output
Si4421
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