ML5805
RF MICRO DEVICES®, RFMD®, OPTIMUM TECHNOLOGY MATCHING®, ENABLING WIRELESS CONNECTIVITY™, POWERSTAR®, POLARIS™ TOTAL RADIO™ ULTIMATEBLUE™ AND FASTWAVE™ ARE TRADEMARKS OF RFMD, LLC. BLUETOOTH IS A TRADEMARK OWNED BY
BLUETOOTH SIG, INC., U.S.A. AND LICENSED FOR USE BY RFMD. ALL OTHER TRADE NAMES, TRADEMARKS AND REGISTERED TRADEMARKS ARE THE PROPERTY OF THEIR RESPECTIVE OWNERS. ©2006, RF MICRO DEVICES, INC.
PRELIMINARY DATA SHEET
APRIL 2008
EDS-106041 REV P01
7628 THORNDIKE ROAD, GREENSBORO, NC 27409-9421 · FOR SALES OR TECHNICAL
REV A1 DS071026 SUPPORT, CONTACT RFMD AT (+1) 336-678-5570 OR SALES-SUPPORT@RFMD.COM
21
SERIAL WORD DEFINITIONS
There are two types of serial words used, specified by the state of Bit 23. Bit 23=0 sets the serial word type to
‘frequency’ and Bit 23=1 specifies the serial transaction type as a ‘configuration word’.
Bit
Definition
23
Specifies whether this serial transaction is type PLL frequency or type
configuration register.
Value
Definition
0
PLL frequency specification word
1
Configuration register specification word
22:0
Data
PLL Frequency Word
The PLL Frequency Word may be sent during standby (XCEN=0) or operation (XCEN=1).
Bit
Value
Definition
23
0
Specifies PLL frequency word
22:20
IPART
Integer part of the PLL programming variable
19:0
FPART
Fractional part of the PLL programming variable
The frequency of the channel is controlled by the configuration PLL Frequency Word defined above and the input
reference frequency. The expression for the channel frequency is
⎥⎦
⎤
⎢⎣
⎡
+
+
=
20
2
3
N
I
H
f
f
ref
ch
MHz,
where;
N = FPART (the fractional part of the DSM programming value),
I = IPART (the integer part of the DSM programming value),
H = DIVBASEOFFS + 147 for f ref = 12.288MHz (RATE = 2, 3, or 4),
DIVBASEOFFS + 130 for
f ref = 13.824MHz (RATE = 0 or 1),
DIVBASEOFFS = a variable defined in Register 3 (default = 8),
RATE = a variable defined in Register 0 (default = 0),
f ref = 12.288MHz or 13.824MHz.
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