参数资料
型号: EZLC-4421 HB
厂商: Silicon Laboratories Inc
文件页数: 7/45页
文件大小: 0K
描述: KIT EZLINK F930/SI4421 HIGH BAND
标准包装: 1
Si4421
Typical Application
Typical application with FIFO usage
VDD
C1
2.2u
C3
C2
10n
VDI
FFIT
CLK
P7
P6
P5
P4
P3
P2
P1
P0
CLKin
(optional)
SDI
SCK
nSEL
SDO
nIRQ
nFFS (optional)*
(optional)*
(optional)
1
2
3
4
5
6
7
8
Si4421
16
15
14
13
12
11
10
9
TP
C4
2.2n (opt.)
PCB
nRESin
nRES
(optional)
X1
Antenna
10MHz
Note: * Connections needed only in time critical applications
Recommended supply decoupling capacitor values
C2 and C3 should be 0603 size ceramic capacitors to achieve the best supply decoupling.
Band [MHz]
433
868
C1
2.2μF
2.2μF
C2
10nF
10nF
C3
220pF
47pF
Property
SMD size
Dielectric
C1
A
Tantalum
C2
0603
Ceramic
C3
0603
Ceramic
915
2.2μF
10nF
33pF
Pin Function vs. Operation Mode
Mode
Transmit
Receive
Bit setting
el = 0
el = 1
ef = 0
ef = 1
Function
Internal TX data register disabled
Internal TX data register enabled
Receiver FIFO disabled
Receiver FIFO disabled
Pin 6
TX data input
nFFS input
(TX data register can be accessed)
RX data output
nFFS input
(RX data FIFO can be accessed)
Pin 7
Not used
RX data clock
output
FFIT output
The el and ef bits can be found in the Configuration Setting Command on page 15. Bit el enables the internal TX data register.
Bit ef enables the FIFO mode.
7
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