Vela 2000-0600, Installation And User Manual

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90 CineCast HD Version 2.6 Installation and User Manual
MODE SENSE (6)
Frame Reporting
Returns the current frame number (number of video frames decoded). Starts at
0 and increments for each picture decoded. This frame count accounts for all
trick modes (Pause, Slow Motion, Fast Forward, and Frame Advance). Mode
Page 34h provides a frame number, which is derived from the GOP time code.
Data Underflow Error Count
Returns the number of data underflows since power-up/reset. The count is incre-
mented on a data underflow when ErrRcvy = 1 in the
MPEG PLAY
(A5h) command.
FIFO Buffer Status
Returns the number of 64-K buffers free on the decoder. The number of buffers is
defined as twenty-four 64K buffers, 1.5MB.
GPOUT1
Returns the state of the general purpose output discrete 1 (GPOUT1):
0 = Output active (closed or low)
1 = Output open (high)
GPOUT2
Returns the state of the general purpose output discrete 2 (GPOUT2):
0 = Output active (closed or low)
1 = Output open (high)
Note that GPOUT2 is dedicated to audio/video switching and fading.
Preload
Indicates that the decoder is loading data into the MPEG hardware but playback
has not begun. After the decoder channel has received the MPEG Play command,
the decoder normally takes some amount of time to preload MPEG data before
audio and video is generated.
During a “Pause on First Frame,” the Play bit (byte 2 bit 0) does not get set until
Resume occurs. The Preload bit will remain set while the decoder is paused on the
first frame. Preload is cleared when playback starts, i.e., when the Play bit is set.
Pause
Set when the decoder enters the paused state. When using “Pause on First
Frame,” this bit gets set when the paused frame is reached. The bit is cleared
when playback is resumed.