EZLC-4421 HB Silicon Laboratories Inc, EZLC-4421 HB Datasheet - Page 17

• Manufacturer Part Number: EZLC-4421 HB
• Description: Wireless Accessories EZLink Fast Prototype Kit Hiband
• Manufacturer: Silicon Laboratories Inc

Specifications of EZLC-4421 HB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Frequency Setting Command
4. Data Rate Command
The actual bit rate in transmit mode and the expected bit rate of the received data stream in receive mode is determined by the 7-bit
parameter R (bits r6 to r0) and bit cs.
BR = 10000 / 29 / (R+1) / (1+cs · 7) [kbps]
In the receiver set R according to the next function:
R= (10000 / 29 / (1+cs · 7) / BR) – 1, where BR is the expected bit rate in kbps.
Apart from setting custom values, the standard bit rates from 600 bps to 115.2 kbps can be approximated with small error.
Data rate accuracy requirements:
BR is the bit rate set in the receiver and
number of consecutive ones or zeros in the data stream. It is recommended for long data packets to include enough 1/0 and 0/1
transitions, and to be careful to use the same division ratio in the receiver and in the transmitter.
5. Receiver Control Command
Bit 10 (p16):
Bit
Bit
Bit
15
Clock recovery in slow mode:
1
15
The 12-bit parameter F (bits f11 to f0) should be in the range
of 96 and 3903. When F value sent is out of range, the
previous value is kept. The synthesizer center frequency f
can be calculated as:
f
15
1
1
0
= 10 · C1 · (C2 + F/4000) [MHz]
14
0
14
14
1
0
Pin 16 function select
13
1
13
13
0
0
433 MHz
868 MHz
915 MHz
12
0
Band
12
12
0
1
f11
11
11
11
0
0
Minimum Frequency

f10
10
p16

BR/BR < 1/(29 · N
10
10
1
430.2400 MHz
860.4800 MHz
900.7200 MHz
BR is the bit rate difference between the transmitter and the receiver. N
p16
0
1
f9
9
d1
9
1
9
f8
8
d0
8
0
8
f7
bit
7
cs
7
i2
7
Function of pin 16
)
Maximum Frequency
Interrupt input
VDI output
879.5150 MHZ
439.7575 MHz
929.2725 MHz
f6
6
r6
6
i1
6
0
f5
5
Clock recovery in fast mode:
r5
5
i0
5
f4
4
The constants C1 and C2 are determined by
the selected band as:
r4
g1
4
4
f3
3
r3
g0
3
PLL Frequency Step
3
Band [MHz]
f2
2
r2
2
r2
2
2.5 kHz
5.0 kHz
7.5 kHz
433
868
915
f1
1
r1
1
r1
1

BR/BR < 3/(29 · N
f0
0
C1
r0
r0
0
0
1
2
3
C2
43
43
30
A680h
C623h
bit
POR
9080h
POR
POR
is the maximum
bit
Si4421
)
17