- SS-HQ1 Application Notes -
Ver.1.0.0 January 7, 2005
65
External EVR communication timing
Communication with an external EVR is performed every field.
The settings in the user-setting parameters EVRUSER0 to EVRUSER7 (CAT18_Byte8 to 15) are sent and
applied to the MB88347L’s output voltages AO1 to AO8. For details, see “3.5.2 Communication Control with an
External EVR”.
Following is an example which shows the timing for communication with the CXD3172AR in the MB88347L,
which is recommended by Sony.
The timing for transmission from the CXD3172AR to the MB88347L varies depending on the particular
MB88347L pin. Transmissions to A01 to A04 are sent every field, while transmissions to A05 to A08 are sent
every four fields, rotating among them in field increments.
Table 9.2-2 External EVR Transmission Timing (for MB88347L)
Field number
Send timing
MB88347L
N
N+1
N+2
N+3
N+4
N+5
N+6
N+7
・・・
AO1
* * * * * * * * *
AO2
* * * * * * * * *
AO3
* * * * * * * * *
Send every
field
AO4
* * * * * * * * *
AO5
*
*
*
AO6
*
*
AO7
*
*
Send every
four fields
AO8
*
*
(* Sent in fields with asterisks)