参数资料
型号: P83C380
厂商: NXP SEMICONDUCTORS
元件分类: 微控制器/微处理器
英文描述: Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口,同步监测和同步处理的监视器微控制器)
中文描述: 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42
文件页数: 13/84页
文件大小: 420K
代理商: P83C380
1997 Dec 12
13
Philips Semiconductors
Product specification
Microcontrollers for monitors with DDC
interface, auto-sync detection and sync proc.
P83Cx80; P87C380
7.3.1
RAM B
UFFER
I/O I
NTERFACE
R
EGISTER
(RAMBUF)
RAMBUF is used as an I/O interface to the RAM buffer. If it is associated with the address pointer DDCADR which is
equipped with the capability of post increment, then it will be convenient to transfer the consecutive data stream. This
feature is useful to support the DDC/EDID data transfer.
Table 5
RAM Buffer I/O Interface Register (SFR address 9CH)
Table 6
Description of RAMBUF bits
7.3.2
M
ISCELLANEOUS
C
ONTROL
R
EGISTER
(DFCON)
This register is bit-addressable.
Table 7
Miscellaneous Control Register (SFR address C0H)
Table 8
Description of DFCON bits
7
6
5
4
3
2
1
0
RAMBUF.7
RAMBUF.6
RAMBUF.5
RAMBUF.4
RAMBUF.3
RAMBUF.2
RAMBUF.1
RAMBUF.0
BIT
SYMBOL
DESCRIPTION
7 to 0
RAMBUF.7 to RAMBUF.0
8-bit data which is read from or to be written into RAM buffer
7
6
5
4
3
2
1
0
EW2
SOGE
SYNCE
DDCE
S1E
ADCE
P14LVL
P8LVL
BIT
SYMBOL
DESCRIPTION
7
EW2
Watchdog Timer enable flag
. This flag is associated with the flags, EW1 (SFR
PWM10H) and EW0 in (SFR PWM10L) to form the enable/disable control key for the
Watchdog Timer (see Chapter 9). The Watchdog Timer is only disabled by
EW2 to EW0 = 101, else it is kept enabled for the rest of the combinations.
CSYNC
in
enable for pin CSYNC
in
/P1.6
. If SOGE = 1, the pin function is CSYNC
in
. If
SOGE = 0, the pin function is I/O port P1.6.
Sync separated signals output enable
for pins VSYNC
out
/P1.4 and HSYNC
out
/P1.5.
If SYNCE = 1, the pins function as VSYNC
out
and HSYNC
out
respectively.
If SYNCE = 0, the pins function as I/O ports P1.4 and P1.5 respectively.
Enable for DDC interface pins SCL1/P1.2 and SDA1/P1.3
. If DDCE = 1, the pins
function as SCL1 and SDA1 respectively for the DDC interface. If DDCE = 0, the pins
function as I/O ports P1.2 and P1.3 respectively.
Enable for I
2
C-bus interface pins SCL/P1.0 and SDA/P1.1
. If S1E = 1, the pins
function as SCL and SDA respectively for the I
2
C-bus
interface. If S1E = 0, the pins
function as I/O ports P1.0 and P1.1 respectively.
6
SOGE
5
SYNCE
4
DDCE
3
S1E
相关PDF资料
PDF描述
P87C380 Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口,同步监测和同步处理的监视器微控制器)
P83C880 Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口,同步监测和同步处理的监视器微控制器)
P83C180 Microcontrollers for monitors with DDC interface, auto-sync detection and sync proc(带DDC接口,同步监测和同步处理的监视器微控制器)
P83C370AAR Microcontrollers for PAL/SECAM TV with OSD and VST(带 OSD和 VST的在PAL/SECAM TV中应用的微控制器)
P83C570AAR Microcontrollers for NTSC TVs with On-Screen Display OSD and Closed Caption CC
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