Z90251 ZILOG [Zilog, Inc.], Z90251 Datasheet - Page 71

• Manufacturer Part Number: Z90251
• Description: eZVision 200 Television Controllers with OSD
• Manufacturer: ZILOG [Zilog, Inc.]

7.3
Table 47 Port 5 Direction Control Register 0Eh: Bank B (PRT5_DRT)
Port 6 Data Register
Table 48 Port 6 Data Register 03h: Bank F (PRT6_DTA)
Bit
R/W
Reset
Note: R = Read W = Write X = Indeterminate
Bit/
Field
Reserved
P56 I/O Definition
P55 I/O Definition
P54 I/O Definition
P53 I/O Definition
P52 I/O Definition
P51 I/O Definition
P50 I/O Definition
Bit
R/W
Reset
Note: R = Read W = Write X = Indeterminate
R/W
7
1
R/W
7
x
R/W
6
1
Bit
Position
7
6
5
4
3
2
1
0
R/W
6
1
R/W
5
1
R/W
5
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
R
R/W
32 KB Television Controller with OSD
4
1
R/W
4
1
Value Description
0
1
0
1
0
1
0
1
0
1
0
1
0
1
R/W
3
1
R/W
Return 1
No Effect
Defines P56 as Output
Defines P56 as Input-POR
Defines P55 as Output
Defines P55 as Input-POR
Defines P54 as Output
Defines P54 as Input-POR
Defines P53 as Output
Defines P53 as Input-POR
Defines P52 as Output
Defines P52 as Input-POR
Defines P51 as Output
Defines P51 as Input-POR
Defines P50 as Output
Defines P50 as Input-POR
3
1
R/W
2
1
R/W
2
1
R/W
R/W
1
1
PS001301-0800
1
1
R/W
R/W
0
1
0
1
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