• Software andpin-to-pin compatible to SAA4992H (uses
3.3 V power supply) and SAA4993H
• Demonstration mode for noise reduction, motion
compensation and colour overlay.
SAA4994H
2GENERAL DESCRIPTION
The SAA4994H is a completely digital monolithic
integrated circuit which can be used for field and line rate
conversion of all global TV standards.
It features improved Natural Motion
It can be configured to emulate the SAA4990H as well as
the SAA4991WP. For demonstration purposes a split
screen mode to show the Dynamic Noise Reduction
(DNR) function and natural motion is available and a
colour vector overlay mode exists.
The SAA4994H supports a Boundary Scan Test (BST)
circuit in accordance with IEEE 1149.
2.1Patent notice
Notice is herewith given that the subject integrated circuit
uses one or more of the following US patents and that
each of these patents may have corresponding patents in
other jurisdictions.
US 4740842, US 5929919, US 6034734, US 5534946,
US 5532750, US 5495300, US 5903680, US 5365280,
US 5148269, US 5072293, US 5771074, and
US 5302909.
(1)
performance.
(1) Natural Motion is a trademark of Koninklijke Philips
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2001 Nov 234
FIELD MEMORY 2
handbook, full pagewidth
5BLOCK DIAGRAMS
Philips SemiconductorsProduct specification
Field and line rate converter
with noise reduction
YA0 to YA7
SNCL
SNDA
SNRST
TCK
TDO
TDI
TMS
TRST
TE
CLK32
45 to 52
27
26
25
35
34
33
32
31
30
79
SNERT
INTERFACE
CONTROL
BST/TEST
DYNAMIC
NOISE
REDUCTION
MPR
LEFT
YB7 to YB0
151, 152,
154 to 159
COMPRESS
MUX
MUX
DE-INTERLACER
vectors
SPMTPMESM
MOTION ESTIMATOR
vectors
UPCONVERSION
YC0 to YC7
2 to 9
DECOMPRESS
MPR
RIGHT
VERTICAL
PEAKING
SEQUENCER
SAA4994H
VERTICAL
ZOOM
61 to 68
82 to 89
MHC059
YF7 to YF0
YG7 to YG0
SAA4994H
The solid lines represent pixel data; the broken lines represent controls.
Fig.1 Block diagram of the luminance part.
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2001 Nov 235
FIELD MEMORY 2
handbook, full pagewidth
Philips SemiconductorsProduct specification
Field and line rate converter
with noise reduction
UVA0 to UVA7
37 to 44
DECOMPRESS/
REFORMAT
DNR
MPR
LEFT
UVB3 to UVB0
147 to 150
COMPRESS/
FORMAT
UPCONVERSION
vectors
UVC0 to UVC3
10 to 13
DECOMPRESS/
REFORMAT
MPR
RIGHT
SAA4994H
VERTICAL
ZOOM
FORMAT
70 to 77
91 to 98
MHC060
UVF7 to YVF0
UVG7 to YVG0
SAA4994H
The solid lines represent pixel data; the broken lines represent controls.
Fig.2 Block diagram of the chrominance part.
Philips SemiconductorsProduct specification
Field and line rate converter
SAA4994H
with noise reduction
6PINNING
SYMBOLPINTYPEDESCRIPTION
V
SSE
1ground ground of output pads
YC02inputbus C luminance input from field memory 2 bit 0 (LSB)
YC13inputbus C luminance input from field memory 2 bit 1
YC24inputbus C luminance input from field memory 2 bit 2
YC35inputbus C luminance input from field memory 2 bit 3
YC46inputbus C luminance input from field memory 2 bit 4
YC57inputbus C luminance input from field memory 2 bit 5
YC68inputbus C luminance input from field memory 2 bit 6
YC79inputbus C luminance input from field memory 2 bit 7 (MSB)
UVC010inputbus C chrominance input from field memory 2 bit 0 (LSB)
UVC111inputbus C chrominance input from field memory 2 bit 1
UVC212inputbus C chrominance input from field memory 2 bit 2
UVC313inputbus C chrominance input from field memory 2 bit 3 (MSB)
REC14outputread enable output for busC
V
V
V
V
SSE
DDE
SSI
DDI
15ground ground of output pads
16supply external supply voltage (output pads)
17ground core ground
18supply core supply voltage
JUMP019inputconfiguration pin 0; will be stored in register 0B3 e.g. to indicate presence of 3rd field
memory; should be connected to ground or to V
JUMP120inputconfiguration pin 1; will be stored in register 0B5 e.g. to indicate presence of 16-bit
1st field memory for full 4:2:2;should be connected to ground or to V
resistor of 47 kΩ
V
V
V
DDE
DDI
SSI
21supply external supply voltage (output pads)
22supply core supply voltage
23ground core ground
RAMTST124inputtest pin 1 input for internal RAM testing with internal pull-down; connect to ground for
normal operation
SNRST25inputSNERT bus reset input
SNDA26I/OSNERT bus data input and output
SNCL27inputSNERT bus clock input
V
SSE
28ground ground of output pads
RAMTST229inputtest pin 2 input for internal RAM testing with internal pull-down; connect to ground for
normal operation
TE30inputtest mode input with internal pull-down; if not used it has to be connected to ground
TRST31inputboundary scan test reset input (active LOW); if not used it has to be connected to V
via a pull-up resistor of 47 kΩ
TMS32inputboundary scan test mode select input; if not used it has to be connected to V
pull-up resistor of 47 kΩ
TDI33inputboundary scan test data input; if not used it has to be connected to V
resistor of 47 kΩ
(1)(2)
via a pull-up resistor of 47 kΩ
DDE
DDE
DDE
via a pull-up
via a
DDE
via a pull-up
DDE
2001 Nov 236
Philips SemiconductorsProduct specification
Field and line rate converter
with noise reduction
SYMBOLPINTYPEDESCRIPTION
TDO343-state boundary scan test: data output
TCK35inputboundary scan test: clock input; if not used it has to be connected to V
resistor of 47 kΩ
V
SSE
36ground ground of output pads
UVA037inputbus A chrominance input from field memory 1 bit 0 (LSB)
UVA138inputbus A chrominance input from field memory 1 bit 1
UVA239inputbus A chrominance input from field memory 1 bit 2
UVA340inputbus A chrominance input from field memory 1 bit 3
UVA441inputbus A chrominance input from field memory 1 bit 4
UVA542inputbus A chrominance input from field memory 1 bit 5
UVA643inputbus A chrominance input from field memory 1 bit 6
UVA744inputbus A chrominance input from field memory 1 bit 7 (MSB)
YA045inputbus A luminance input from field memory 1 bit 0 (LSB)
YA146inputbus A luminance input from field memory 1 bit 1
YA247inputbus A luminance input from field memory 1 bit 2
YA348inputbus A luminance input from field memory 1 bit 3
YA449inputbus A luminance input from field memory 1 bit 4
YA550inputbus A luminance input from field memory 1 bit 5
YA651inputbus A luminance input from field memory 1 bit 6
YA752inputbus A luminance input from field memory 1 bit 7 (MSB)
REA53output read enable output for bus A
V
V
V
V
V
V
SSE
SSI
DDI
DDI
SSI
SSE
54ground ground of output pads
55ground core ground
56supply core supply voltage
57supply core supply voltage
58ground core ground
59ground ground of output pads
REF60inputread enable input for bus F and G
YF761outputbus F luminance output bit 7 (MSB)
YF662outputbus F luminance output bit 6
YF563outputbus F luminance output bit 5
YF464outputbus F luminance output bit 4
YF365outputbus F luminance output bit 3
YF266outputbus F luminance output bit 2
YF167outputbus F luminance output bit 1
YF068outputbus F luminance output bit 0 (LSB)
V
DDE
69supply external supply voltage (output pads)
UVF770outputbus F chrominance output bit 7 (MSB)
UVF671outputbus F chrominance output bit 6
UVF572outputbus F chrominance output bit 5
UVF473outputbus F chrominance output bit 4
(1)(2)
SAA4994H
via a pull-up
DDE
2001 Nov 237
Philips SemiconductorsProduct specification
Field and line rate converter
with noise reduction
SYMBOLPINTYPEDESCRIPTION
UVF374outputbus F chrominance output bit 3
UVF275outputbus F chrominance output bit 2
UVF176outputbus F chrominance output bit 1
UVF077outputbus F chrominance output bit 0 (LSB)
V
SSE
78ground ground of output pads
CLK3279inputsystem clock input
V
V
SSI
SSE
80ground core ground
81ground ground of output pads
YG7823-state bus G luminance output bit 7 (MSB)
YG6833-state bus G luminance output bit 6
YG5843-state bus G luminance output bit 5
YG4853-state bus G luminance output bit 4
YG3863-state bus G luminance output bit 3
YG2873-state bus G luminance output bit 2
YG1883-state bus G luminance output bit 1
YG0893-state bus G luminance output bit 0 (LSB)
V
DDE
90supply external supply voltage (output pads)
UVG7913-state bus G chrominance output bit 7 (MSB) or vector output bit 7
UVG6923-state bus G chrominance output bit 6 or vector output bit 6
UVG5933-state bus G chrominance output bit 5 or vector output bit 5
UVG4943-state bus G chrominance output bit 4 or vector output bit 4
UVG3953-state bus G chrominance output bit 3 or vector output bit 3
UVG2963-state bus G chrominance output bit 2 or vector output bit 2
UVG1973-state bus G chrominance output bit 1 or vector output bit 1
UVG0983-state bus G chrominance output bit 0 (LSB) or vector output bit 0
V
V
V
V
V
V
V
SSE
SSI
DDI
DDE
DDI
SSI
SSE
99ground ground of output pads
100ground core ground
101supply core supply voltage
102supply external supply voltage (output pads)
103supply core supply voltage
104ground core ground
135ground ground of output pads
HREF136inputhorizontal reference synchronization input
V
SSI
V
DDI
137ground core ground
138supply core supply voltage
OSCI139inputtest pin with internal pull-down; connect to ground for normal operation
RESFM140outputreset field memory output for pin OSCI = LOW or test output OSCOUT for
pin OSCI = HIGH
V
V
V
DDE
DDI
SSI
141supply external supply voltage (output pads)
142supply core supply voltage
143ground core ground
ACV144outputactive video output
V
SSE
145ground ground of output pads
WEB146outputwrite enable output for bus B
UVB3147outputbus B chrominance output to field memory 2 bit 3 (MSB)
UVB2148outputbus B chrominance output to field memory 2 bit 2
UVB1149outputbus B chrominance output to field memory 2 bit 1
UVB0150outputbus B chrominance output to field memory 2 bit 0 (LSB)
YB7151outputbus B luminance output to field memory 2 bit 7 (MSB)
YB6152outputbus B luminance output to field memory 2 bit 6
V
DDE
153supply external supply voltage (output pads)
YB5154outputbus B luminance output to field memory 2 bit 5
(1)(2)
2001 Nov 239
Philips SemiconductorsProduct specification
Field and line rate converter
SAA4994H
with noise reduction
SYMBOLPINTYPEDESCRIPTION
YB4155outputbus B luminance output to field memory 2 bit 4
YB3156outputbus B luminance output to field memory 2 bit 3
YB2157outputbus B luminance output to field memory 2 bit 2
YB1158outputbus B luminance output to field memory 2 bit 1
YB0159outputbus B luminance output to field memory 2 bit 0 (LSB)
V
SSE
Notes
1. Not used input pins should be connected to ground.
2. Because of the noisy characteristic of the output pad supply it is recommended not to connect the core supply and
the output pad supply directly at the device. The output pad supply should be buffered as close as possible to the
device.
160ground ground of output pads
(1)(2)
2001 Nov 2310
Philips SemiconductorsProduct specification
Field and line rate converter
with noise reduction
Field and line rate converter
with noise reduction
7FUNCTIONAL DESCRIPTION
The FAL (fal_top) module builds the functional top level of
the SAA4994H. It connects the luminance data path, the
chrominance data path and the luminance
(de)compression with SAA4994H inputs and outputs as
well as controlling logic. Outside of fal_top there are only
the pad cells, boundary scan test cells, the boundary scan
test controller, the clock tree, the test enable tree and the
input port registers.
Figure 4 shows a simplified block diagram of fal_top
module. It displays the flow of pixel data (solid lines) and
controls (broken lines) between the modules inside.
Basic functionality of the modules in fal_top module is as
follows:
• KER (kernel): Y (luminance) data path
• COL (colour): UV (chrominance) data path
• YDP (Y-DPCM): compression (and decompression) of
luminance output (and input) data by Differential Pulse
Code Modulation (DPCM)
• LSE (line sequencer): generate line frequent control
signals
• SNE (interface): Synchronous No parity Eight bit
Reception and Transmission (SNERT) interface to a
microcontroller.
The SNERT interface operates in a slave receive and
transmit mode for communication with a microcontroller,
which resides on peripheral circuits (e.g. SAA4978H)
together with a SNERT master. The SNERT interface
transforms serial data from the microprocessor (via the
SNERT bus) into parallel data to be written into the
SAA4994Hs write registers and parallel data from
SAA4994Hsreadregistersinto serial data to be sent to the
microcontroller. The SNERT bus consists of 3 signals:
1. SNCL: used as serial clock signal, generated by the
master
2. SNDA: used as bidirectional data line
3. SNRST: used as a reset signal, generated by the
microcontroller to indicate the start of a transmission.
SAA4994H
Table 1 Clock cycle references
SIGNALLATENCY
RE_F0
RE_C62 cycles + REceShift
YC and UVC63 cycles
RE_A93 cycles + REaShift
YA and UVA94 cycles
YF, YG, UVF
and UVG
WE_B159 cycles + 4 input lines + WEbdShift
YB and UVB159 cycles + 4 input lines
There is an algorithmic delay of 3 lines between input and
output data. Therefore, the main data output on the
F and G bus begins while the fourth input line is read.
Writing to the B and D bus starts one input line later. The
readandwriteenablesignalsRE_A,WE_BandRE_Ccan
be shifted by control registers REaShift, WEbdShift and
REceShift, which are implemented in the line sequencer.
The fal_top module itself reads the following control
register bits (addresses):
• NrofFMs (017H)
• MatrixOn (026H) and BusGControl (028H)
• MemComp and MemDecom (026H).
NrofFMs, MatrixOn and BusGControl are used to enable
the D and G output bus, respectively. MemComp and
MemDecom are connected to YDP to control luminance
data compression and decompression. These control
register signals are not displayed in Fig.4. Further
information on the control registers is given in Chapter 8.
147 cycles + 3 input lines
The processing of a video field begins on the rising edge
of the RE_F input signal. As indicated in Fig.4, the
SAA4994H receives its inputs andgenerates its outputs at
the following clock cycles after RE_F (see Table 1).
2001 Nov 2312
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