M66239FP Datasheet, PDF (11/24 Pages) Renesas Technology Corp – High Speed Standard Clock Generator With Frequency Synthesizer

M66239FP
Function Mode 3
Mode 3 is triangle modulation type as following.
Frequency modulation is set by serial input resister.
(1) Operation mode
(2) Frequency modulation period (Trate)
(3) Frequency modulation start position (Tstart)
(4) Output center frequency (fcenter)
(5) Output peak frequency (fpeak)
(6) 1st.pole position (1stPole)
(7) 2nd.pole position (2ndPole)
: Resister 1
: Resister 2
: Resister 3
: Resister 4
: Resister 5
: Resister 6
: Resister 7
MCLK
TR
CKO
Output
clock
frequency
Fpeak+
Fcenter
Tstart
Trate
Fpeak–
Tspace1
Modulation start 1st Pole
Tspace2
Tspace6
2nd Pole
Modulation end
Notes: 1. Each Pole position (cycle number) is defined by Tstart position.
2. Until next TR input, output clock frequency keep "Fcenter".
Figure 6 Operation Timing of Mode 3
Rev.1.00 Mar 16, 2005 page 11 of 23