SAA4951 Ver la hoja de datos (PDF) - Philips Electronics
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SAA4951 Datasheet PDF : 25 Pages
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Philips Semiconductors
Memory controller
Preliminary specification
SAA4951
Table 3 Mode registers.
REGISTER BIT
MODE0 0 (LSB)
1
2
3
4
MODE0 5
6
7 (MSB)
NAME
FSA0
FSA1
FSD0
FSD1
FORMAT0
FORMAT1
HDEL0
HDEL1
REMARKS
frequency select acquisition bit 0
frequency select acquisition bit 1
frequency select display bit 0
frequency select display bit 1
FSA1
FSA0
acquisition frequency
0
0
12.0 MHz
0
1
13.5 MHz
1
0
16.0 MHz
1
1
18.0 MHz
FSD1
FSD0
display frequency
0
0
27.0 MHz
0
1
27.0 MHz
1
0
32.0 MHz
1
1
36.0 MHz
control bit 0 for data format
control bit 1 for data format
FORMAT1
FORMAT0
Y:U:V data rate
0
0
4: 1: 1
0
1
4: 2: 2
1
0
4: 4: 4
1
1
4: 4: 4
horizontal delay control bit 0
horizontal delay control bit 1
the bits HDEL0, HDEL1 control the position of the internal vertical read enable
signals for RE1
HDEL1 HDEL0
0
0
2 lines earlier
0
1
1 line earlier
1
0
normal
1
1
1 line later
April 1994
11
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