PCA84C646P PHILIPS [NXP Semiconductors], PCA84C646P Datasheet - Page 26
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PCA84C646P
Manufacturer Part Number
PCA84C646P
Description
Microcontrollers for TV tuning control and OSD applications
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.PCA84C646P.pdf
(72 pages)
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Philips Semiconductors
12.2
Table 24 Derivative Register 23
Table 25 Description of Derivative Register 23 bits
1995 Jun 15
Microcontrollers for TV tuning
control and OSD applications
5 to 4
VINT
BIT
7
7
6
2
1
0
Derivative Register 23 (CON2)
SYMBOL
P14LVL
P7LVL
P6LVL
VIEN
VIEN
VINT
6
Bit VINT indicates if the interrupt comes from VSYNC (if VINT = 1 and VIEN = 1) or
I
The VSYNC leading edge (active level detection automatically done by the
PCA84C646/PCA84C846) generates an interrupt if bit VIEN = 1 and the SIO interrupt is
enabled (i.e. the I
These three bits are reserved.
Polarity select bit for output TDA. When:
Polarity select bit for outputs PWM00 to PWM03. When:
Polarity select bit for outputs PWM04 to PWM07. When:
2
C-bus when the CPU gets interrupted by interrupt vector address 7.
P14LVL = 1; the TDAC output is inverted.
P14LVL = 0; the TDAC output is not inverted.
P7LVL = 1; the outputs PWM00 to PWM03 are inverted.
P7LVL = 0; the outputs PWM00 to PWM03 are not inverted.
P6LVL = 1; the outputs PWM04 to PWM07 are inverted.
P6LVL = 0; the outputs PWM04 to PWM07 are not inverted.
5
2
C-bus and the VSYNC interrupt shares the same interrupt vector).
4
26
3
DESCRIPTION
PCA84C646; PCA84C846
P14LVL
2
P7LVL
Preliminary specification
1
P6LVL
0
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