PCA84C441 PHILIPS [NXP Semiconductors], PCA84C441 Datasheet - Page 22

• Manufacturer Part Number: PCA84C441
• Description: 8-bit microcontrollers with OSD and VST
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
12.6.1
Table 11 Derivative register OSDCA (address 40H)
Table 12 Description of OSCDA bits
1996 Nov 29
BIT SYMBOL
handbook, full pagewidth
7
6
5
4
3
2
1
0
8-bit microcontrollers with OSD and VST
CC34
CC34
CC24
CC14
RBLK
ROUND
STBY
VLVL
HLVL
7
D
ERIVATIVE REGISTER
Character colour code bits.
These bits are used for colour selection purposes. See Table 24.
Raster blanking control (see Fig.24). When the RBLK bit is:
Character rounding control (see Figs 22 and 23). The rounding function generates half dots where
the corners of two dots meet. The rounding function also works with multiple cell characters.
When the ROUND bit is:
Stand-by. This bit is used to enable or disable the OSD facility. When the STBY bit is:
Vertical synchronous signal level (see Fig.21).
This bit selects the active level of the VSYNCN input signal. When the VLVL bit is:
Horizontal synchronous signal level (see Fig.21).
This bit selects the active level of the HSYNCN input signal. When the HLVL bit is:
(VSYNCN)
(VSYNCN)
HSYNCN
HSYNCN
CC24
Logic 1, the VOB output is driven HIGH to display the OSD characters on a blank screen.
Logic 0, the VOB output returns to its normal output state on the trailing edge of VSYNCN.
Logic 1, the rounding function is enabled.
Logic 0, the rounding function is disabled.
Logic 1, the OSD oscillator is disabled.
Logic 0, the OSD oscillator is enabled and the OSD facility is available.
Logic 1, VSYNCN is active HIGH.
Logic 0, VSYNCN is active LOW.
Logic 1, HSYNCN is active HIGH.
Logic 0, HSYNCN is active LOW.
6
OSDCA
CC14
5
Fig.21 VSYNCN and HSYNCN active level.
characters can be displayed
RBLK
4
22
DESCRIPTION
ROUND
3
84C44X; 84C64X; 84C84X
STBY
2
(HLVL = VLVL = 1)
(HLVL = VLVL = 0)
VLVL
1
MCD180
Product specification
HLVL
0