MN5572 Datasheet, PDF (8/28 Pages) Panasonic Semiconductor – Gray Scale Font Engine

MN5572
I Functional Description (continued)
1. Addressing (continued)
1.2 PCI mode address map
• Memory access
AD11 AD10
AD9
Symbol
Description
R/W
0
0
0
POINT Path (outline) data input port W
0
0
1
RASTER Gray-scale data output port
R
• IO access
AD4
AD3
AD2
Symbol
Description
R/W
0
0
0
COMMAND
Command register
W
0
0
1
STATUS
Status register
R
0
1
0
MASK
Mask register
R/W
0
1
1
FIFO
FIFO status register
R
2. Memory register functions
2.1 Path (outline) data input port (Point FIFO)
Memory port used for input of the outline font path (outline) data that will be expanded by the MN5572. This
port allows 64 double-word values to be written at one time. If more than 64 double-word values must be written,
the write operation must be split into multiple operations. The POINT FIFO has a total capacity of 256 double-
word values.
• Local 32 and PCI mode
bit 31
0
Path data
• Local 16 mode
Data is transferred in the order high-order bits first, low-order bits later.
bit 31
16
cycle 1
Upper 16 bits of the path data
bit 15
0
cycle 2
Lower 16 bits of the path data
8
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