UPD61051 Datasheet, PDF (33/106 Pages) NEC – MOS INTEGRATED CIRCUIT MPEG2 AUDIO/VIDEO ENCODER

µPD61051, 61052
Figure 2-13. Serial Interface
[Data Write]
CCS
CSCLK
CSDI _{xx A5 A4 A3 A2 A1 A0 W x D7 D6 D5 D4 D3 D2 D1 D0 x}
CSDO xx
[Data Read]
CCS
CSCLK
CSDI xx A5 A4 A3 A2 A1 A0 R x x x x x x x x x
x
CSDO xx
D7 D6 D5 D4 D3 D2 D1 D0
2.6 SDRAM Interface
External memory is SDRAM. It is possible to use the following.
Memory
16 Mbit SDRAM
64 Mbit SDRAM
64 Mbit SDRAM
128 Mbit SDRAM
128 Mbit SDRAM
Table 2-6. Use Memory
Data bus width
16 bits
32 bits
16 bits
16 bits
32 bits
Quantity
2
1
2
2
1
Use memory capacity
32 Mbits
64 Mbits
128 Mbits
128 Mbits
128 Mbits
The µPD61051/61052 preserves the part of the parameter that is necessary to generate the stream, entry video
image, a video stream, an audio stream, a stream header, user data, and the instruction of the firmware at this
memory.
This system uses only CAS latency = 3, burst length = 4.
When encode using time base corrector and/or displays local decoding picture, it needs equal to or more than 64
Mbits SDRAM.
When PAL encoding, it needs equal to or more than 64 Mbit SDRAM.
When transcoding, it needs equal to or more than 64 Mbit SDRAM.
Data Sheet S15082EJ4V0DS
33