Rev. 1.0, 02/00, page xv of 19
26.9.5
Operation .......................................................................................................... 654
26.10 X-Value and Tracking Adjustment Circuit ....................................................................... 656
26.10.1
Overview .......................................................................................................... 656
26.10.2
Block Diagram.................................................................................................. 656
26.10.3
Register Description ......................................................................................... 658
26.11 Digital Filters .................................................................................................................... 661
26.11.1
Overview .......................................................................................................... 661
26.11.2
Block Diagram.................................................................................................. 662
26.11.3
Arithmetic Buffer ............................................................................................. 664
26.11.4
Register Configuration...................................................................................... 665
26.11.5
Register Description ......................................................................................... 666
26.11.6
Filter Characteristics ......................................................................................... 674
26.11.7
Operations in Case of Transient Response ....................................................... 676
26.11.8
Initialization of Z
-1
............................................................................................ 676
26.12 Additional V Signal Generator ......................................................................................... 678
26.12.1
Overview .......................................................................................................... 678
26.12.2
Pin Configuration ............................................................................................. 679
26.12.3
Register Configuration...................................................................................... 679
26.12.4
Register Description ......................................................................................... 679
26.12.5
Additional V Pulse Signal ................................................................................ 681
26.13 CTL Circuit....................................................................................................................... 684
26.13.1
Overview .......................................................................................................... 684
26.13.2
Block Diagram.................................................................................................. 685
26.13.3
Pin Configuration ............................................................................................. 686
26.13.4
Register Configuration...................................................................................... 686
26.13.5
Register Description ......................................................................................... 687
26.13.6
Operation .......................................................................................................... 701
26.13.7
CTL Input Section ............................................................................................ 704
26.13.8
Duty Discriminator ........................................................................................... 707
26.13.9
CTL Output Section.......................................................................................... 713
26.13.10 Trapezoid Waveform Circuit............................................................................. 716
26.13.11 Note on CTL Interrupt ...................................................................................... 717
26.14 Frequency Dividers ........................................................................................................... 718
26.14.1
Overview .......................................................................................................... 718
26.14.2
CTL Frequency Divider.................................................................................... 718
26.14.3
CFG Frequency Divider ................................................................................... 722
26.14.4
DFG Noise Removal Circuit............................................................................. 731
26.15 Sync Signal Detector......................................................................................................... 733
26.15.1
Overview .......................................................................................................... 733
26.15.2
Block Diagram.................................................................................................. 734
26.15.3
Pin Configuration ............................................................................................. 735
26.15.4
Register Configuration...................................................................................... 735
26.15.5
Register Description ......................................................................................... 736