adv601lc Analog Devices, Inc., adv601lc Datasheet - Page 28

• Manufacturer Part Number: adv601lc
• Description: Ultralow Cost Video Codec
• Manufacturer: Analog Devices, Inc.

ADV601LC
APPLYING THE ADV601LC
This section includes the following topics:
• Using the ADV601LC in computer applications
• Using the ADV601LC in standalone applications
• Configuring the host interface for 6- or 32-bit data paths
• Connecting the video interface to popular video encoders and
• Getting the most out of the ADV601LC
The following Analog Devices products should be considered in
ADV601LC designs:
• ADV7175/ADV7176—Digital YUV to analog composite
• AD722—Analog RGB to analog composite video encoder
• AD1843—Audio codec with embedded video synchronization
• ADSP-21xx—Family of fixed-point digital signal processors
• AD8xxx—Family of video operational amplifiers
decoders
video encoder
NOTE:
DECODE
ADV601LC FOR HOST ADDRESSES
0X4000,0000 THROUGH
0X4000,0013
DECODE
HOST BUS
1
2
ASSERTS CS
IS HOST SPECIFIC
D16–D23
D24–D31
D8–D15
D0–D7
A28
A29
A30
A31
WR
RD
A2
A3
~
ON THE
Figure 13. A Suggested PC Application Design
DECODE
DECODE
1
2
ADR0
DQ0–DQ7
DQ8–DQ15
DQ16–DQ23
DQ24–DQ31
ADR1
CS
RD
WR
STATS_R
HIRQ
LCODE
ACK
FIFO_SRQ
FIFO_ERR
FIFO_STP
BE0–BE1
BE2–BE3
ADV601LC
–28–
VDATA [0–7]
Using the ADV601LC in Computer Applications
Many key features of the ADV601LC were driven by the demand-
ing cost and performance requirements of computer applications.
The following ADV601LC features provide key advantages in
computer applications:
• Host Interface
• Low Cost External DRAM
The 512 double word FIFO provides necessary buffering of
compressed digital video to deal with PCI bus latency.
Unlike many other real-time compression solutions, the
ADV601LC does not require expensive external SRAM
transform buffers or VRAM frame stores.
D0–D15
VCLKO
A0–A8
VCLK
CAS
RAS
WE
27MHz PAL OR NTSC
TOSHIBA TC514265DJ/DZ/DFT-60
NEC
NEC
HITACHI
ANY DRAM USED WITH THE ADV601LC
MUST MEET THE MINIMUM SPECIFICATIONS
OUTLINED FOR THE HYPER MODE DRAMS
LISTED
HM514265CJ-60
PD424210ALE-60
PD42S4210ALE-60
COMPOSITE VIDEO INPUT
A0–A8
DQ1–DQ16
RAS
CAS
OE
WEL
WEH
LLC
Y[0–7]
(256K
SAA7111
24.576MHz
DRAM
XTAL
XTAL
16-BIT)
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