SAA7118 Datasheet, PDF (147/169 Pages) NXP Semiconductors – Multistandard video decoder with adaptive comb filter and component video input

Philips Semiconductors
Multistandard video decoder with adaptive
comb filter and component video input
Preliminary specification
SAA7118
15.7.4 SUBADDRESS 8FH
Table 107 Status information scaler part; 8FH[7:0]; read only register
BIT
I²C-BUS
STATUS BIT
FUNCTION⁽¹⁾
D7
XTRI
status on input pin XTRI, if not used for 3-state control, usable as hardware flag for software use
D6
ITRI
status on input pin ITRI, if not used for 3-state control, usable as hardware flag for software use
D5
FFIL
status of the internal ‘FIFO almost filled’ flag
D4 FFOV status of the internal ‘FIFO overflow’ flag
D3 PRDON copy of bit DPROG, can be used to detect power-up and start-up fails
D2 ERROF error flag of scalers output formatter, normally set, if the output processing needs to be
interrupted, due to input/output data rate conflicts, e.g. if output data rate is much too low and all
internal FIFO capacity used
D1 FIDSCI status of the field sequence ID at the scalers input
D0 FIDSCO status of the field sequence ID at the scalers output, scaler processing dependent
Note
1. Status information is unsynchronized and shows the actual status at the time of I²C-bus read.
15.7.5 SUBADDRESSES 90H AND C0H
Table 108 Task handling control; register set A [90H[7:6]] and B [C0H[7:6]]
X = don’t care.
EVENT HANDLER CONTROL
Output field ID is field ID from scaler input
Output field ID is task status flag, which changes every time an selected task
is activated (not synchronized to input field ID)
Scaler SAV/EAV byte bit D7 and task flag = 1, default
Scaler SAV/EAV byte bit D7 and task flag = 0
CONTROL BITS D7 AND D6
CONLH
X
X
OFIDC
0
1
0
X
1
X
Table 109 Task handling control; register set A [90H[5:3]] and B [C0H[5:3]]
EVENT HANDLER CONTROL
Active task is carried out directly
1 field is skipped before active task is carried out
... fields are skipped before active task is carried out
6 fields are skipped before active task is carried out
7 fields are skipped before active task is carried out
CONTROL BITS D5 TO D3
FSKP2
FSKP1
FSKP0
0
0
0
0
0
1
...
...
...
1
1
0
1
1
1
2001 May 30
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