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TDA4841PS Datasheet(PDF) 35 Page - NXP Semiconductors |
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TDA4841PS Datasheet(HTML) 35 Page - NXP Semiconductors |
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35 / 60 page  1999 Oct 25 35 Philips Semiconductors Product specification I2C-bus autosync deflection controller for PC monitors TDA4841PS List of I2C-bus controlled switches I2C-bus data can be transmitted in direct or buffered mode and is defined by the MSB of the register subaddress: • SAD1 is the register subaddress to be used for transmissions in direct mode • SAD2 is the register subaddress to be used for transmissions in buffered mode. Table 5 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 the internal protection circuit. CONTROL BIT FUNCTION SAD1 (HEX) SAD2 (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 0A 8A X D6 ###### 1: only vertical and protection blanking available on pins CLBL and HUNLOCK AGCDIS 0: AGC in vertical oscillator active 0B 8B # D6 ###### 1: AGC in vertical oscillator inhibited FHMULT 0: EW output independent of horizontal frequency 0B 8B D7 ####### 1: EW output tracks with horizontal frequency VSC 0: VLIN, HCORT and HCORB adjustments enabled 02 82 X D6 ###### 1: VLIN, HCORT and HCORB adjustments forced to centre value MOD 0: horizontal and vertical moire cancellation enabled 08 88 D7 ####### 1: horizontal and vertical moire cancellation disabled VOVSCN 0: vertical size 100% 0F 8F X D6 ###### 1: vertical size 116.8% for VGA350 CLAMP 0: trailing edge for horizontal clamp 09 89 # D6 ###### 1: leading edge for horizontal clamp VBLK 0: vertical blanking = 260 µs 09 89 D7 ####### 1: vertical blanking = 340 µs ACD 0: ASCOR disconnected from PLL2 04 84 X D6 ###### 1: ASCOR internally connected with PLL2 STDBY(3) 0: internal power supply enabled 1A 9A # XXXXX # D0 1: internal power supply disabled SOFTST(3) 0: soft start not released (pin HPLL2 pulled to ground) 1A 9A # XXXXX D1 # 1: soft start is released (power-up via pin HPLL2) |
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