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參數(shù)資料
| 型號： | SAA5250P |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Interface for data acquisition and control for multi-standard teletext systems |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP40 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-40 |
| 文件頁數(shù)： | 6/35頁 |
| 文件大小： | 173K |
| 代理商： | SAA5250P |
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January 1987
6
Philips Semiconductors
Product specification
Interface for data acquisition and control
(for multi-standard teletext systems)
SAA5250
FUNCTIONAL DESCRIPTION
Microcontroller interface
The microcontroller interface communicates with the CPU via the handshake signals DB7
DB0, ALE, CS, RD, WR. The
microcontroller interface produces control commands as well as programming the registers to write their contents or read
incoming status/data information from the buffer memory. The details of the codes used to address the registers are
given in Table 2.
The CIDAC is ‘MOTEL’ compatible (MOTEL compatible means it is compatible with standard
Mo
torola or In
tel
microcontrollers). It automatically recognizes the microcontroller type (such as the 6801 or 8501) by using the ALE signal
to latch the state of the RD input. No external logic is required.
Table 1
Recognition signals
Table 2
CIDAC register addressing
CIDAC
8049/8051
TIMING 1
6801/6805
TIMING 2
ALE
RD
WR
ALE
RD
WR
AS
DS, E,
Φ
2
R/W
CODES
FUNCTION
R
W
CS
DB2
DB1
DB0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
write register R0
write register R1
write register R2
write register R3
write register R4
write register R5
write command register R6 (initialization command)
write register R7
read status
read data register
test (not used)
test (not used)
相關PDF資料 |
PDF描述 |
|---|---|
| SAA5250T | Interface for data acquisition and control for multi-standard teletext systems |
| SAA5252 | Line twenty-one acquisition and display LITOD |
| SAA5252P | Line twenty-one acquisition and display LITOD |
| SAA5252T | Line twenty-one acquisition and display LITOD |
| SAA5254 | Integrated VIP and teletext decoder IVT1.1X |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SAA5250T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Interface for data acquisition and control for multi-standard teletext systems |
| SAA5252 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Line twenty-one acquisition and display LITOD |
| SAA5252P | 制造商:NXP Semiconductors 功能描述:TELETEXT DECODER, PDIP24 |
| SAA5252T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Line twenty-one acquisition and display LITOD |
| SAA5254 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Integrated VIP and teletext decoder IVT1.1X |
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