p87c770aar NXP Semiconductors, p87c770aar Datasheet - Page 10

• Manufacturer Part Number: p87c770aar
• Description: Microcontrollers Ntsc With On-screen Display Closed Caption
• Manufacturer: NXP Semiconductors

Philips Semiconductors
6.2
The display control registers can only be addressed using MOVX instructions.
Table 3 Display control register map
7
7.1
The P8xCx70 has 29 I/O lines treated as 29 individual
addressable bits or as 4 parallel 8-bit addressable ports,
e.g. Ports 0, 1, 2 and 3, with the exception of Port 1 which
has only 5 lines available.
7.2
All I/O port pins are open-drain, bidirectional and require
external pull-up resistors. No port options are available for
masking.
1999 Jun 11
ADDRESS
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
(HEX)
87FC
87FD
87FE
87FF
87F0
87F1
87F2
87F3
87F4
87F5
87F6
87F7
87F8
I/O FACILITY
Display control registers map
I/O ports
Port type
Display Control
Text Vertical Position
Text Horizontal Position
Fringing Control
Text Area End
Scroll Area
Scroll Range
RGB Brightness
Status (Read)
Status (Write)
HSYNC Delay
Odd/Even Align
reserved
Configuration
REGISTER NAME
FBPOL
HOP1
BUSY
SRC3
VPOL
FRC3
SSH3
SPS3
CC
7
HPOL
HOP0
SRC2
FRC2
SSH2
HSD6
OEA6
PLUS
SPS2
H/V
6
10
handbook, halfpage
SCON
FIELD
SRC1
HSD5
OEA5
VOL5
FRC1
SSH1
SPS1
TAS5
TAE5
ADJ
from port latch
5
read port pin
input data
SRC0
SCRL
SCRL
HSD4
OEA4
VOL4
FRC0
SSH0
SPS0
TAS4
TAE4
MIN
Q
4
Fig.3 Open-drain I/O port.
FRDN
SCR3
HSD3
OEA3
VOL3
SSP3
STS3
TAS3
TAE3
BRI3
FLF
3
n
BUFFER
FRDE
SCR2
HSD2
OEA2
VOL2
SSP2
STS2
P8xCx70 family
TAS2
TAE2
INPUT
MSH
BRI2
2
Product specification
MOD1
FRDS
SCR1
HSD1
OEA1
VOL1
SSP1
TAS1
TAE1
STS1
BRI1
1
MGK547
I/O pin
FRDW
MOD0
SCR0
HSD0
OEA0
VOL0
SSP0
STS0
TAS0
TAE0
BRI0
0