Ver 1.3
PRELIMINARY
EAGLE
3.9 H.264 Decoder
3.9.1 Features
1. The H.264 Decoder supports ‘Baseline Profile’ and decodes the encoded data bit-stream in YCbCr(4:2:0) format.
2. The Scaler block supports up to 720x480 of source and destination image size and provides the basic functionality of
resizing the source image using filter.
3.9.2 Block Diagram
Figure 3-14 H.264 Decoder Block Diagram
3.9.3 Decoding Operation Related Registers
3.9.3.1 Decoder Enable Register (H264DON)
This register configures the operation of H.264 Decoder.
Address: FFE0 1C00h
Bit
31 : 1
0
R/W
R
R/W
Description
Default Value
Reserved
Decoder On / Off
-
0b
0 : Stops Decoder Operation
1 : Starts Decoder Operation
After initialization, setting a ‘1’ to the Decoder On/Off bit in H264DON register starts the decoder operation.
3.9.3.2 Decoder Mode Register (H264DECMODE)
This register configures the decoding mode of H.264 Decoder.
Address: FFE0 1C04h
Bit
31 : 1
0
R/W
R
R/W
Description
Default Value
Reserved
Decoder mode
-
0b
0 : Completely H/W Based Decoding
1 : S/W Based Decoding for Header Parsing above Macro Block Layer
101
CONFIDENTIAL
Beijing Peak Microtech Co.Ltd.
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