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參數(shù)資料
| 型號： | NT68275 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | IIC Bus Controlled On-Screen Display |
| 中文描述： | IIC總線控制屏幕顯示 |
| 文件頁數(shù)： | 23/38頁 |
| 文件大?。?/td> | 1389K |
| 代理商： | NT68275 |
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NT68275
23
(13) Reset Flag Control Registers
Row
15
Column
23
Bit 1 RESTFLG –
A system resetwill clear this bit. User can set this bit first and detect if
internal reset circuit has reset the system.
This bit can be read back through IIC bus by external master device, for example MCU.
The other bits are reserved.
7
6
5
4
3
2
1
0
RESETFLG
(14) Reserved Control Register: Row 15, Column 24 & 31
7
Row
15
Column
24
This control register is reserved and any data can not be written into this register.
7
6
5
Row
15
Column
31
This control register is reserved and any data can not be written into this register.
6
5
4
3
2
1
0
Reserved
4
3
2
1
0
Reserved
IIC Bus Read Mode Operation:
3
---- 1 bytes data ----
4
(3)
Row15 Column 23
Data
8 bits
Type
(1)
START
Condition
(2)
(4)
STOP
Condition
(a)
OSD Slave
Address ‘$7B’
8 bits
User must read these bytes of data sequentially and can abort transmission by sending NAK (no acknowledge),
Repeat START condition or STOP condition. Every time user sends the START condition (including Repeat
START) and slave address $7B, the NT68275 will respond ACK and then transmit the first byte (content of row5
column3 register). It is prohibited to read more than 1 byte of data.
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