STV2162 Ver la hoja de datos (PDF) - STMicroelectronics
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STV2162 Datasheet PDF : 14 Pages
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STV2162
BUS DESCRIPTION (continued)
Subaddress 21 (hex 15)
MSB
LSB
RES_CUT
FUF
D5
D4
D3
D2
D1
D0
RES_CUT : Reset of Cut-off Counters and TUBE_COLD bit ; at the same time : stop of cut-off function
0 : cut-off loop active
1 : cut-off loop stopped and Reset of all cut-off counters and TUBE_COLD bit
FUF
: Full Frame Mode (selects cut-off loop operation modus)
0 : cut-off loop is active during the whole frame (adjustment of VG2 on the CRT board in
production)
1 : cut-off loop is active during the first 4 active Video lines : normal mode
D[5..0]
: Drive Register for Red Channel (gain adjustement of the red driver output stage)
R_DRIVE 000000 hex 00) minimal position : 0.33 of maximal value
111111 (hex 3F) maximal position : 3.2VPP at ROUT for contrast = max.,
DRV_GAIN=1 and Y=70 IRE; or DRV_GAIN=0 and Y = 100 IRE
Subaddress 22 (hex 16)
MSB
LSB
VID_OFF DIS_CUT
D5
D4
D3
D2
D1
D0
VID_OFF : Hard Blanking of Video Output
0 : normal operation
1 : ROUT, GOUT, BOUT is hard blanked, while the cut-off measurement is still active.
DIS_CUT : Disable of Cut-off Loop
0 : Cut-off loop is active.
1 : Cut-off loop is stopped, actual values in the registers are frozen.
Truth - Table for DIS_CUT / FUF
Operation Mode
DIS_CUT FUF
Video signal present at RGBOUT ; 3 cut-off measurement lines in the lines 21,22,23
0
0
Cut-off measurement during the whole frame with the sequence --> Leakage - Blue, green, red
0
1
(repetitive each 4th line)
Video signal present at RGBOUT but no cut-off measurement (last values of cut-off counter frozen)
1
0
All Outputs ROUT, GOUT, BOUT hard blanked all the time ; no video ; no cut-off measurement
1
1
(useful when TV is switched off --> immediate stop of video output)
D[5..0]
: Green Drive Register (gain adjustement of the GREEN driver outputstage)
G_DRIVE 000000 (hex 00) minimal position : 0.33 of maximal value
111111 (hex 3F) maximal position : 3.2 VPP at GOUT for contrast = max.,
DRV_GAIN=1 and Y=70 IRE; or DRV_GAIN=0 and Y=100 IRE
Subaddress 23 (hex 17)
MSB
LSB
SSC_TRI
FORCE_MUTE
D5
D4
D3
D2
D1
D0
SSC_TRI
: Mode switch for super sandcastle output (only useful in test mode)
0 : SSC Pin delivers super sandcastle output
1 : Super sandcastle output disabled ; Pin SSC can serve as input for PSI and video part
FORCE_MUTE : Test mode for accelerating the test of the PHI1 mute circuit
0 : normal operation ; TV application
1 : PHI1 circuit set to mute ; ϕ1 forced to free run mode
D[5..0]
: Blue Drive Register (gain adjustement of the blue driver output stage)
B_DRIVE 000000 (hex 00) minimal position : 0.33 of maximal value
111111 (hex 3F) maximal position :
3.2 VPP at BOUT for contrast = max., DRV_GAIN=1 and
Y=70 IRE ; or DRV_GAIN=0 and Y=100 IRE
12/14
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