Filter
Top Products
2004 Jan 26 36
Philips Semiconductors Product specification
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
SAA6752HS
Table 11 Interrupt status definition
STATUS
WORD BIT
EXCEPTION CONDITION RESPONSE IF EXCEPTION IS DETECTED
0 video copyright violation SAA6752HS continues encoding; note 1.
1 input video signal not detected or lost SAA6752HS continues encoding but outputs audio ES
packets only; SAA6752HS will resynchronize if video
input is recommenced; notes 2 to 4.
2 when a difference between the V-sync period
in I
2
C-bus settings and in the video input signal
is detected
SAA6752HS continues but frames may be lost during
the event.
3 Clock mode 2 out of range If enabled, the SAA6752HS PLL will auto-switch to
Clock mode 1 or 3 as programmed.
4 output buffer overflow (due to loss of data read
command)
Stream output stops or corrupted data will be
delivered; reset or forced reconfigure needed to
recover.
5 video and audio frames out of alignment Ratio between number of generated audio frames and
number of generated video frames is not nominal; time
stamps remain correct; note 5.
6 input audio not DVD-compliant (to IEC 61937) SAA6752HS continues encoding but will not include
audio packets.
• incorrect Preamble Pc
• sampling frequency out of range
• bit rate out of range
7 audio format change detected in DVD bypass
mode
SAA6752HS continues encoding but will not include
audio packets.
8 audio pause burst detected SAA6752HS continues operation.
9 SAA6752HS mode transition complete;
desired operation mode has been reached
SAA6752HS continues operation.
if external user data insertion in mode ‘only
once’ is active: insertion of user data has
been finished and the host can send new
user data
10 illegal I
2
C-bus command SAA6752HS ignores the I
2
C-bus command.
• I
2
C-bus command not recognized
• command in invalid mode
• command parameter error
11 general error SAA6752HS will go to Idle mode if time-out is enabled
or stop operating if time-out is disabled; in case of the
later a forced reconfigure is recommended.
12 input audio word select signal not detected or
audio stream stopped after exception status
bit 4, 6, 7 or 8
SAA6752HS continues encoding but outputs video ES
packets only; transition to STOP needed to recover.