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| 型號(hào)： | 935206750518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | PLASTIC, SOT-318, QFP-80 |
| 文件頁(yè)數(shù)： | 15/30頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | 935206750518 |
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1996 Oct 25
22
Philips Semiconductors
Preliminary specication
Progressive scan-Zoom and Noise
reduction IC (PROZONIC)
SAA4990H
APPLICATION INFORMATION
The basic application of PROZONIC in a feature box is
shown in Fig.15. Here, apart from the data streams, the
‘timed control data’ streams indicate that some memory
control signals have to be processed by the PROZONIC,
in order to let the vertical sample rate conversion function
correctly.
Horizontal scaling factors are performed by the memory
controller SAA4951WP/SAA4952H.
All basic clock signals in the feature box are provided by
the memory controller, nominal frequencies on the double
scan parts of the system are 27, 32 or 36 MHz. In any case
the display frequency is decoupled from the acquisition
clock.
The memory controller supplies the deflection processor
with clock, horizontal and vertical pulses.
The SNERT-bus is used to control the PROZONIC at a
data rate of typically 1 Mbits/s.
Table 12 Abbreviations used in Fig.15
BLND
horizontal blanking signal, display related
HDFL
horizontal synchronization signal, deection
related
HA
horizontal synchronization signal, acquisition
related
HRA
horizontal reference signal, acquisition related
HRD
horizontal reference signal, display related
HRDFL horizontal reference signal, deection related
IE
input enable signal
LLA
line locked clock signal, acquisition related
LLD
line locked clock signal, display related
LLDFL
line locked clock signal, deection related
RE
read enable signal
RSTR
reset read signal
RSTW
reset write signal
SCL
serial clock signal (I2C-bus)
SDA
serial data signal (I2C-bus)
SNERT synchronous no parity eight bit reception and
transmission (serial control bus)
SRC
serial read clock signal
SWC
serial write clock signal
VA
vertical synchronization signal,
acquisition related
VDFL
vertical synchronization signal,
deection related
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