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2004 Jan 26 47
Philips Semiconductors Product specification
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
SAA6752HS
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65 I user data insertion
mode
R/W 1 byte 00H selects the user data insertion mode
bit 0 = 0 always repeated external user data insertion into GOP
header (user data 1)
bit 0 = 1 only once
bit 1 = 0 always repeated external user data insertion into picture
header (user data 2)
bit 1 = 1 only once
bit 2 = 0 disabled Internal user data insertion of Closed
Caption data into GOP header user data
area according to DVD standard.
Remark: Only one internal user data
insertion mode can be active at the same
time, either bit2=1 or bit3=1.
bit 2 = 1 enabled
bit 3 = 0 disabled Internal user data insertion of Closed
Caption data into picture header user data
area according to ATSC/NTSC standard.
Remark: Only one internal user data
insertion mode can be active at the same
time, either bit2=1 or bit3=1.
bit 3 = 1 enabled
bit4=0 − Stop user data insertion into GOP header
user data area. This bit can be used in all
operation modes. Setting this bit to logic 1
(= stop) deletes the downloaded GOP user
data and resets bit 2 to ‘disabled’.
bit 4 = 1 stop
bit5=0 − Stop user data insertion into picture header
user data area. This bit can be used in all
operation modes. Setting this bit to logic 1
(= stop) deletes the downloaded picture
user data and resets bit 3 to ‘disabled’.
bit 5 = 1 stop
bit 6 reserved must be set to zero
bit 7 reserved must be set to zero
ADR
HEX
M COMMAND NAME R/W SIZE/POSITION PARAMETER/RANGE DEFAULT DESCRIPTION