參數(shù)資料
型號(hào): OL2300NHN
廠商: NXP SEMICONDUCTORS
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Fractional-N PLL based transmitter
中文描述: SPECIALTY TELECOM CIRCUIT, PQCC16
封裝: 3 X 3 MM, 0.85 MM HEIGHT, LEAD FREE, PLASTIC, MO-220, SOT758-1, VQFN-16
文件頁數(shù): 18/46頁
文件大小: 951K
代理商: OL2300NHN
OL2300
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 28 October 2010
18 of 46
NXP Semiconductors
OL2300
Fractional-N PLL based transmitter
6.6.2
PLL frequency deviation (FSK)
The FSK frequency deviation is set as part of the FCON (FSK modulation control) register
and has a width of 8 bits.
Table 21.
Bit 7
FSK7
R/W
FSK deviation is calculated by:
Table 22.
Variable
f
DEV
FSK
DEF
f
ref
[1]
f
ref
can be set to f
xtal
/ 2 by a test-mode bit.
a) f
ref
= f
xtal
b) FSK
DEV
= 0.255
Table 23.
ISM-band
(MHz)
315
434
868
915
6.6.3
Oscillator and feedback divider settings
In order to allow operation for all ISM bands different oscillator divider and PLL divider
settings can be selected with the special function register bits XOSL and FBSL located in
register TXCON (See
Figure 1
).
Address 09h; FCON, modulation control
Bit 6
Bit 5
FSK 6
FSK 5
R/W
R/W
Bit 4
FSK 4
R/W
Bit 3
FSK 3
R/W
Bit 2
FSK 2
R/W
Bit 1
FSK 1
R/W
Bit 0
FSK 0
R/W
PLL frequency deviation calculation parameters
Description
FSK frequency deviation
FSK deviation value (FCON register)
[1]
PLL reference frequency
Frequency selection limits
f
xtal
(MHz)
min f
RF
(MHz)
9.185183
298.51852 321.48127 140.15
13.08148
425.14815 457.85155 199.61
12.85185
835.37038 899.62903 392.21
13.55555
881.11112
max f
RF
(MHz)
step f
RF
(Hz)
min f
DEV
(
±
kHz)
0.560
0.800
0.785
0.827
max f
DEV
(
±
kHz)
143
204
200
211
step f
DEV
(Hz)
560
800
785
827
948.88826 413.68
f
DEV
f
ref
±
FSK
16384
--------------------
×
=
Fig 13. FSK circuitry and Delta-Sigma modulator
18
15
3
3
2
18
10
×
2
×
2
001aak391
MUX
SOFT-
FSK
MASH 1-1
ΔΕ
-MOD.
ASK0
ASK1
FCON[7:0]
2's compl.
0
0
1
1
0
1
1
1
''0''
Bit ''D''; transmit command
TX data
FBSL
FB_CK
FCx[17:0]
FCx[17:15]
FCx[14:0]
modulus
control
FB_CK
RMP[6:0]
1
0
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