sm5838a Nippon Precision Circuits Inc, (NPC), sm5838a Datasheet - Page 11

• Manufacturer Part Number: sm5838a
• Description: 5120 ? 8-bit Synchronous Fifo
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

1/2 Data Reduction
Input data rate reduction by half can be realized by taking WE and RE simultaneously HIGH only once every
two clock cycles.
Noninterlace-to-interlace conversions line extraction can be realized by switching WE LOW/HIGH in line
units and RE LOW/HIGH in word units.
1/2 data reduction
1/2 line extraction (noninterlace-to-interlace conversion)
DOUT
DOUT
CLK
CLK
DIN
DIN
WE
RW
RW
WE
OE
RR
RE
OE
RR
RE
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
2
1
nH-1H
4
2
6
6
7 8 9
8
nH-1H
909
nH-2H
nH
0 1
10
2 3 4 5
12
14
nH
SM5838AS
5119
5118
1819
909
5119
909
0 1 2
0 1 2
0 1 2 3 4 5
0 1 2 3 4 5
0
0
2
1
nH+1H
4
2
6
6
7 8 9
8
nH+1H
909
nH
nH
SEIKO NPC CORPORATION —11
0 1
10
2 3 4 5
12
nH+2H
14
5118
909
5119
909