MN85571AC PANASONIC [Panasonic Semiconductor], MN85571AC Datasheet - Page 2

• Manufacturer Part Number: MN85571AC
• Description: Single-Chip Audio/Video MPEG2 Encoder
• Manufacturer: PANASONIC [Panasonic Semiconductor]

MN85571AC
Note) The MN85571AC includes two RISC microcontrollers (for video encoding and data multiplexing) and one DSP for audio
2
1. Video encoder block. This block is based on the MN85560 MPEG2 video encoder, but provides additional
2. Audio encoder block. This block is based on the MN67735JA Dolby Digital encoder core.
3. Multiplexer block. This block multiplexes the encoded video and audio data.
4. SDRAM interface block (MIF). This block handles data exchange with external SDRAM.
5. Host interface block (HIF). This block handles data exchange with and accepts control commands from an exter-
Block Diagram
The MN85571AC consists of the 5 blocks listed below.
encoding. The microcode for these two RISC microcontrollers must be downloaded to the on-chip instruction memory before
the MN85571AC is used. The DSP microcode is stored in on-chip ROM, and does not need to be downloaded.
functionality as well.
nal host.
LRCKIO
BCKIO
(27 MHz)
(27 MHz)
AMAS
VCLK
PCKO
SCLK
ADIN
PCKI
VIN
8
108 MHz
36 MHz
PLL
2. Audio encoder
1. Video encoder block
DSP
block
ERISC
ASF
ABUS
SDD00023AEM
4. MIF
CBUS
Startup
32
SRISC
SYSENC
3. Multiplexer
5. HIF
16
Startup
block
DIF
CIF
14
8
CDO
RMRS
HCIFZ
RCLKO
RCLKI
CDACK
CDREADY
IPIC
VOB