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SDA 6000
PRELIMINARY DATA SHEET
Version 2.1
Slicer and Acquisition
12 - 11
Micronas
FCWSS
This FC is fixed to that of WSS. A special algorithm makes sure that the WSS-FC is
detected even if the CVBS signal is coming from a video tape.
No FC-check
If FC-check is disabled, the data recording is triggered by the data start recognition. In
this case the software needs to do the byte synchronization.
FC-Check Select
There is a two bit line parameter called FCSEL. With this parameter the user will be able
to select which FC-Check is used for the actual line. If NORM is set to WSS the WSS
FCcheck is used independently of FCSEL.
12.4.2
Interrupts
Some events which occur inside the slicer, the sync separation or the acquisition
interface can be used to trigger an interrupt. They are summarized in register ACQISN.
The hardware sets the associated interrupt flag which must be manually reset by SW
before the next interrupt can be accepted. All ACQ interrupts are bundled into one
interrupt which is fed to the ACQ-interrupt node (ACQIC) of the controller.
12.4.3
VBI Buffer and Memory Organization
Slicer and acquisition interface need parameters for configuration and they produce
status information for the CPU.
Some of these parameters and status bits are constant for a field. Those parameters are
called field parameters. They are downloaded after the vertical sync of slicer 1. If the
synchronization of slicer 1 is missing the vertical sync from slicer 2 is used to initialize
the parameter download.
Other parameters and status bits may change from line to line (e.g. data service
dependent values). Those parameters are called line parameters. They are downloaded
after each horizontal sync.
The start address of the VBI (VBI = vertical blanking interval) buffer can be configured
with special function register ‘STRVBI’. 32 16-bit words have to be reserved for every
sliced data line. If 18 (in full channel mode 350) lines of data have been sent to memory
no further acquisition takes place until the next vertical pulse appears and the H-PLL is
still locked. That means if at least 1176 Bytes (22424 Bytes in full channel mode) are
reserved for the VBI buffer no VBI overflow is possible. The acquisition can be started
and stopped by the controller using bit ‘ACQON’ of register STRVBI. The acquisition is
stopped as soon as this bit changed to ‘0’. If the bit is changed back to ‘1’ switching on
of the acquisition is synchronized to the next V-pulse. The start address (Bit 13 … 0 of
Содержание SDA 6000
Страница 3: ...Contents Overview...
Страница 21: ...Pin Description...
Страница 22: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Pin Descriptions 2 3 Micronas 2 Pin Descriptions...
Страница 29: ...Architectural Overview...
Страница 33: ...C16X Microcontroller...
Страница 34: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 C16X Microcontroller 4 3 Micronas 4 C16X Microcontroller...
Страница 88: ...Interrupt and Trap Function...
Страница 122: ...System Control Configuration...
Страница 159: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 System Control Configuration 6 40 Micronas...
Страница 160: ...Peripherals...
Страница 282: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Peripherals 7 124 Micronas...
Страница 283: ...Clock System...
Страница 284: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 3 Micronas 8 Clock System...
Страница 288: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 8 Micronas...
Страница 289: ...Sync System...
Страница 290: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Sync System 9 3 Micronas 9 Sync System...
Страница 301: ...Display Generator...
Страница 302: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Display Generator 10 3 Micronas 10 Display Generator...
Страница 348: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Display Generator 10 50 Micronas...
Страница 349: ...D A Converter...
Страница 352: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 D A Converter 11 6 Micronas...
Страница 353: ...Slicer and Acquisition...
Страница 354: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Slicer and Acquisition 12 3 Micronas 12 Slicer and Acquisition...
Страница 381: ...Register Overview...
Страница 398: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Register Overview 13 20 Micronas...
Страница 399: ...Elelctrical Characteristics...
Страница 400: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Electrical Characteristics 14 3 Micronas 14 Electrical Characteristics...
Страница 411: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Electrical Characteristics 14 14 Micronas...