Z90251 ZILOG [Zilog, Inc.], Z90251 Datasheet - Page 63

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

Table 36 Master I
Software puts data to be transmitted into I
received data from it. Bit 7 in this register is used as an acknowledge bit when
receiving data from a Slave. Bit 0 of I
acknowledgment bit generated by the Slave. Refer to Table 38.
Table 37 Master I
Bit
R/W
Reset
Note: R = Read W = Write X = Indeterminate
Bit/
Field
Reserved
I
Reserved
Reset
Busy
Bit
R/W
Reset
Note: R = Read W = Write X = Indeterminate
Bit/
Field
Data
2
C Command
Bit
Position
7,6,5,4,3,2,1,0
7
7
2
Bit
Position
7
6, 5, 4
3, 2
1
0
2
R/W
R/W
C Command Register 0Bh: Bank C (I
C Data Register 0Ah: Bank C (I
x
0
6
6
R/W
R/W
0
x
R/W Value
R
W
R/W
W
W
W
W
W
R
R
R
R
R
5
5
R/W
R/W
x
0
Value Description
2
0
1
0
1
C_DATA register contains an
4
4
32 KB Television Controller with OSD
R/W
R/W
2
0
x
C Data Register (Table 37) and reads
Description
Received data
Data to be sent
Return 1
No Effect
Return 1
See Table 35
Return 1
No Effect
Return 1
No Effect
Reset I
Idle
Busy
No Effect
3
3
2
C_DATA)
2
R/W
R/W
C interface
0
x
2
C_CMD)
2
2
R/W
R/W
0
x
1
1
R/W
R/W
PS001301-0800
0
x
0
0
R/W
R/W
0
0
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