Z90251 Datasheet, PDF (68/97 Pages) Zilog, Inc. – eZVision 200 Television Controllers with OSD

Z90255 ROM and Z90251 OTP
32 KB Television Controller with OSD
60
Bit/
Field
Reserved
P47/PWM10
P46/PWM9
P45/PWM8
P44/PWM7
Reserved
Bit
Position
7, 6
5
4
3
2
1, 0
R/W
R
W
R/W
R/W
R/W
R/W
R
W
Value
0
1
0
1
0
1
0
1
Description
Return 1
No Effect
Selects PWM10
Selects P47 - POR
Selects PWM9
Selects P46 - POR
Selects PWM8
Selects P45 - POR
Selects PWM7
Selects P44 - POR
Return 1
No Effect
Table 43 Port 4 Data Register 05h: Bank C (PRT4_DTA)
Bit
7
6
5
R/W
R/W R/W R/W
Reset
x
x
x
Note: R = Read W = Write X = Indeterminate
4
R/W
x
3
R/W
x
2
R/W
x
1
R/W
x
0
R/W
x
Bit/
Field
P47
P46
P45
P44
P43
Bit
Position
7
6
5
4
3
R/W Value
R
W
R
W
R
W
R
W
R
W
Description
Data input on P47
Data Output on P47
Data input on P46
Data Output on P46
Data input on P45
Data Output on P45
Data input on P44
Data Output on P44
Data input on P43
Data Output on P43
PS001301-0800