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TDA4853 Datasheet(PDF) 34 Page - NXP Semiconductors |
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TDA4853 Datasheet(HTML) 34 Page - NXP Semiconductors |
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34 / 60 page  1999 Jul 13 34 Philips Semiconductors Product specification I2C-bus autosync deflection controllers for PC/TV monitors TDA4853; TDA4854 Table 4 List of I2C-bus controlled switches; notes 1 and 2 Notes 1. X = don’t care. 2. # = this bit is occupied by another function. If the register is addressed, the bit values for both functions must be transferred. 3. Bits STDBY and SOFTST can be reset by internal protection circuit. CONTROL BIT FUNCTION SAD (HEX) REGISTER ASSIGNMENT D7 D6 D5 D4 D3 D2 D1 D0 BLKDIS 0: vertical, protection and horizontal unlock blanking available on pins CLBL and HUNLOCK 01 X ######D0 1: only vertical and protection blanking available on pins CLBL and HUNLOCK HBC 0: HPINBAL (parabola) waveform enabled 01 X #####D1 # 1: HPINBAL (parabola) waveform disabled HPC 0: HPARAL (sawtooth) waveform enabled 01 X ####D2 # # 1: HPARAL (sawtooth) waveform disabled AGCDIS 0: AGC in vertical oscillator active 01 X ###D3 ### 1: AGC in vertical oscillator inhibited VSC 0: VLIN and HCOR adjustments enabled 01 X # # D4 #### 1: VLIN and HCOR adjustments forced to centre value MOD 0: horizontal and vertical moire cancellation enabled 01 X # D5 ##### 1: horizontal and vertical moire cancellation disabled TVMOD 0: TV mode at fmin not activated 01 X D6 ###### 1: TV mode at fmin activated FHMULT 0: EW output independent of horizontal frequency 0B ######X D0 1: EW output tracks with horizontal frequency VOVSCN 0: vertical size 100% 0B #####D2 X # 1: vertical size 116.8% for VGA350 CLAMP 0: trailing edge for horizontal clamp 0B ####D3 # X # 1: leading edge for horizontal clamp VBLK 0: vertical blanking = 260 µs 0B ###D4 ##X # 1: vertical blanking = 340 µs VLC 0: VLINBAL adjustment enabled 0B # # D5 ###X # 1: VLINBAL adjustment forced to centre value VPC 0: VPOS and HTRAP adjustments enabled 0B # D6 ####X # 1: VPOS and HTRAP adjustments forced to centre value ACD 0: ASCOR disconnected from PLL2 0B D7 #####X # 1: ASCOR internally connected with PLL2 STDBY(3) 0: internal power supply enabled 0D XXXXXX# D0 1: internal power supply disabled SOFTST(3) 0: soft start not released (pin HPLL2 pulled to ground) 0D XXXXXXD1 # 1: soft start is released (power-up via pin HPLL2) |
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