Samsung S5PC110, Manual

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S5PC110_UM 12 11BJPEG
12-6
12.6 PROCESS
12.6.1 REGISTER ACCESS
The registers are modified:
After reset, until a new job starts, or
After the generation of the process completion interruption signal, until a new job starts.
Other conditions indicate that the core is in the normal operation, thus, register modification is not allowed.
12.6.2 TABLE ACCESS
Four Huffman tables (AC & DC, 2 tables for each) and four quantization tables must be configured before
compression. To set any quantization table and Huffman table, first access the corresponding table entry register.
Then write transfers should follow. To understand the write transfer, refer to
Figure 12-6
. The access order for
each table is shown below.
3 4 1 2 7 8 5 6
11 12 9 10 15 16 13 14
19 20 17 18 23 24 21 22
27 28 25 26 31 32 29 30
35 36 33 34 39 40 37 38
43 44 41 42 47 48 45 46
51 52 49 50 55 56 53 54
59 60 57 58 63 64 61 62
Figure 12-6 Access Order in Quantizer Table