參數(shù)資料
型號(hào): P83C270AAR
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC
中文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP52
文件頁數(shù): 10/80頁
文件大?。?/td> 266K
代理商: P83C270AAR
1999 Jun 11
10
Philips Semiconductors
Product specification
Microcontrollers for NTSC TVs with On-Screen
Display (OSD) and Closed Caption (CC)
P8xCx70 family
6.2
Display control registers map
The display control registers can only be addressed using MOVX instructions.
Table 3
Display control register map
ADDRESS
(HEX)
REGISTER NAME
7
6
5
4
3
2
1
0
87F0
87F1
87F2
87F3
87F4
87F5
87F6
87F7
87F8
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
SRC3
VPOL
HOP1
FRC3
SSH3
SPS3
FBPOL
BUSY
CC
SRC2
HPOL
HOP0
FRC2
SSH2
SPS2
H/V
HSD6
OEA6
PLUS
SRC1
VOL5
TAS5
FRC1
TAE5
SSH1
SPS1
FIELD
SCON
HSD5
OEA5
ADJ
SRC0
VOL4
TAS4
FRC0
TAE4
SSH0
SPS0
SCRL
SCRL
HSD4
OEA4
MIN
FLF
VOL3
TAS3
FRDN
TAE3
SSP3
STS3
BRI3
SCR3
HSD3
OEA3
MSH
VOL2
TAS2
FRDE
TAE2
SSP2
STS2
BRI2
SCR2
HSD2
OEA2
MOD1
VOL1
TAS1
FRDS
TAE1
SSP1
STS1
BRI1
SCR1
HSD1
OEA1
MOD0
VOL0
TAS0
FRDW
TAE0
SSP0
STS0
BRI0
SCR0
HSD0
OEA0
87FC
87FD
87FE
87FF
7
I/O FACILITY
7.1
I/O ports
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
Port type
All I/O port pins are open-drain, bidirectional and require
external pull-up resistors. No port options are available for
masking.
Fig.3 Open-drain I/O port.
handbook, halfpage
MGK547
n
Q
from port latch
input data
read port pin
INPUT
BUFFER
I/O pin
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