SM5838AS Nippon Precision Circuits Inc, SM5838AS Datasheet - Page 10

• Manufacturer Part Number: SM5838AS
• Description: 5120 X 8-bit Synchronous FIFO
• Manufacturer: Nippon Precision Circuits Inc

High-speed Conversion
For example, an NTSC signal interlace-to-noninter-
lace conversion. If interpolated line data can be
assumed to be similar to the preceding line data and
the write data rate is 14.3 MHz (4f
sion can be realized by reading twice at 28.6 MHz
(8f
Furthermore, interpolated line data, with appropriate
signal processing separation, can be read out line-by-
Preceding line data used as interpolated line
Interpolated data used as interpolated line
(A)DOUT
(B)DOUT
SC
DOUT
(A)DIN
(B)DIN
CLK
DIN
).
(A)OE
(A)RR
(B)OE
(B)RR
(A)RE
(B)RE
RW
WE
CLK
OE
RE
RR
RW
WE
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5
0 1 2 3 4 5
0
0
0
1
1
1
nH-1H
nH'-1H
2
2
2
909
909
SC
nH
*Output data 867 to 909 forms the preceding 1H data.
*Output data 867 to 909 forms the preceding 1H data.
nH'
nH
0 1 2 3 4 5
), then conver-
0 1 2 3 4 5
nH
nH
SM5838AS
1819
909
909 *
1819
909
909
line by alternating between 2 SM5838AS devices (1
line/device).
In reality, however, double the number of devices are
required for luminance signal (Y) and color differ-
ence signal (C) systems. And triple the number of
devices are required for RGB signal systems.
909 *
0 1 2
0 1 2
0 1 2 3 4 5
0 1 2 3 4 5
0
0
0
1
1
1
nH
2
nH'
2
2
NIPPON PRECISION CIRCUITS—10
nH+1H
909
nH'+1H
nH+1H
909
0 1 2 3 4 5
0 1 2 3 4 5
nH+1H
nH+1H
909
909 *
909
909
909 *