參數(shù)資料
型號： SAA6703AH
廠商： NXP SEMICONDUCTORS
元件分類： 顯示控制器
英文描述： CRT OR FLAT PNL GRPH DSPL CTLR, PQFP160
封裝： 28 X 28 MM, 3.40 MM HEIGHT, PLASTIC, MS-022, SOT-322-2, QFP-160
文件頁數(shù)： 62/97頁
文件大小： 488K
代理商： SAA6703AH
2004 Apr 01
65
Philips Semiconductors
Product specication
XGA analog input at panel controller
SAA6703AH
The multicolour font definitions have to start always from
address 0 and the start of the single colour definitions is
indicated by the configurable single colour start code
(OSDT_SC register). This means all the characters with
charcodes below the OSDT_SC value are treated as
multicolour and all charcodes above this value are handled
as single colour characters. To use only multicolour
characters in the RAM font set this value must be set to an
unreachable value. Due to the RAM size of 4 kbyte a
multicolour 8
× 8 font with 2 bits per pixel can hold
256 characters as maximum so it is enough to set only
bit 8 in OSDT_SC_HI register to logic 1. To use only single
colour definitions set the complete OSDT_SC pointer
simply to 000H.
A character is stored in the font RAM using the
OSDT_CC_HI, OSDT_CC_LO, OSDT_CMASK and
OSDT_CDEF registers where OSDT_CC gives the
charcode of the character to be defined and OSDT_CDEF
and OSDT_CMASK are used for the data bits and the
according mask using 8 bits at a time.
The data format written to OSDT_CDEF has to be MSB
aligned representing the following pixel of the character
with the pixel sequence processed from top to bottom and
left to right. As mentioned before, a single colour pixel is
represented with one bit while a multicolour pixel needs
two bits to be described. So each definition of a character
will need multiple writes to OSDT_CDEF (8 bits at a time)
until the whole character is completed. The total number of
bytes to be transmitted is depending on the defined font
size and if the character uses a single or multicolour
definition.
Table 45 Examples of possible font RAM congurations
FONT SIZE
STORABLE CHARACTERS
COLOUR
MAXIMUM NUMBER
8
× 8
single colour only
512
multicolour only
256
mixed example
256 single colour and 128 multicolour
12
× 16
single colour only
170
multicolour only
85
mixed example
100 single colour and 35 multicolour
12
× 18
single colour only
151
multicolour only
75
mixed example
121 single colour and 15 multicolour
9
× 13
single colour only
280
multicolour only
140
mixed example
200 single colour and 40 multicolour
24
× 24
single colour only
56
multicolour only
28
mixed example
40 single colour and 8 multicolour
32
× 32
single colour only
32
multicolour only
16
mixed example
24 single colour and 4 multicolour
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相關代理商/技術參數(shù)
參數(shù)描述
SAA6712E 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XGA RGB to TFT graphics engine
SAA6713AH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XGA analog input flat panel controller
SAA6713AH/V1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XGA analog input flat panel controller
SAA6713H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XGA dual input flat panel controller
SAA6713H/V1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:XGA dual input flat panel controller
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