p87c770 ETC-unknow, p87c770 Datasheet - Page 57

• Manufacturer Part Number: p87c770
• Description: Microcontrollers Ntsc With On-screen Display Closed Caption
• Manufacturer: ETC-unknow

Philips Semiconductors
Table 93 Status Register (address 87F8H); write only
Table 94 Description of SR bits
18.9.10 HSYNC D
Table 95 HSYNC Delay Register (address 87FCH)
Table 96 Description of HSDR bits
1999 Jun 11
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
BIT
BIT
7
7
6
5
4
3
2
1
0
7
7
6
5
4
3
2
1
0
SYMBOL
SYMBOL
SCON
SCRL
HSD6
HSD6
HSD5
HSD4
HSD3
HSD2
HSD1
HSD0
ELAY
H/V
H/V
6
6
R
EGISTER
This bit is not used and causes no action.
Busy signal switch horizontal/vertical. If H/V = 0, horizontal blank area selected.
If H/V = 1, vertical blank area selected.
Scroll area enabled. If SCON = 1, then the scroll area is enabled.
See Section 18.5.1.2.
Start scroll. If SCRL = 1, this bit indicates that the scroll function is in progress. When
this bit is set, the automatic scroll function is started. It is automatically cleared on
completion. If forced to a logic 0, the scroll function will be terminated as if all lines were
scrolled. Subsequent logic 0 writes will cause the scroll row to increment by one.
These 4 bits are not used and cause no action.
reserved
HSYNC delay. These 7 bits allow the position of the HSYNC pulse to be changed in
increments of full width characters. A delay of 0 to 63 full width characters can be
selected.
SCON
HSD5
(HSDR)
5
5
SCRL
HSD4
4
4
57
HSD3
3
3
DESCRIPTION
DESCRIPTION
HSD2
2
2
P8xCx70 family
HSD1
1
1
Product specification
HSD0
0
0