Processing Modes; Processing Flow; Processing Algorithm; Example Control Flow - Fujitsu MB86R02 Jade-D Hardware Manual

MB86R02 'Jade-D' Hardware Manual V1.64
23.7 Processing Mode
23.7.1

Processing Flow

RLD
AHB slave IF
CFG
& FIFO
STS
23.7.2

Processing Algorithm

23.7.2.1

Processing Modes

RLD supports only two processing modes – 'in operation' mode and 'disabled' mode.
23.8 Control Flow
23.8.1

Example Control Flow

1) microcontroller decodes TGA header info:
BitPerPixel
o
Source size
o
picture dimensions --> number of decompressed bytes
o
configuration of RLD:
2) reset OFIFO, IFIFO
3) set bpp-format
4) set target number of bytes
5) Configure AHB master IF
e.g. Dest. Address in Video Memory
o
6) Enable RLD
Deliver compressed data to RLD AHB slave.
Case A: compressed data source is AHB slave:
Run-length
Decoding
AHB master IF
DMACtrl
FIFO
23-9