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參數資料
| 型號： | TMDS461PZIT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | PLASTIC, TQFP-100 |
| 文件頁數： | 22/24頁 |
| 文件大小： | 1467K |
| 代理商： | TMDS461PZIT |
PRODUCTPREVIEW
www.ti.com ................................................................................................................................................................................................. SLLS915 – AUGUST 2008
Table 3. I2C Register 0x07 Lookup Table (continued)
BIT
VALUE
STATE
DEFAULT
DESCRIPTION
3
1
Port 4 5V_PWR
5V_PWR on Port 4 has changed since reading 0x01
Changed
0
Port 4 5V_PWR
X
5V_PWR on Port 4 has not changed since reading 0x01
Unchanged
2
1
Port 3 5V_PWR
5V_PWR on Port 3 has changed since reading 0x01
Changed
0
Port 3 5V_PWR
X
5V_PWR on Port 3 has not changed since reading 0x01
Unchanged
1
Port 2 5V_PWR
5V_PWR on Port 2 has changed since reading 0x01
Changed
0
Port 2 5V_PWR
X
5V_PWR on Port 2 has not changed since reading 0x01
Unchanged
0
1
Port 1 5V_PWR
5V_PWR on Port 1 has changed since reading 0x01
Changed
0
Port 1 5V_PWR
X
5V_PWR on Port 1 has not changed since reading 0x01
Unchanged
Table 4. I2C Register 0x02 Lookup Table
BIT
VALUE
STATE
DEFAULT
DESCRIPTION
7:6
Bit 7
Bit 6
Power Mode
1
0
Device enters low power mode
1
Device enters low power mode
0
1
Device is in Standby mode
0
X
Device is in normal power mode
5
1
Auto Select
Port Selection will be automatic based on state of 5V_PWR[1:4] and priority bit
On
0
Auto Select
X
Port Selection based on register 3.6:5
Off
4:3
Bit 4
Bit 3
Priority Select
0
X
Port 1 is the priority port
0
1
Port 2 is the priority port
1
0
Port 3 is the priority port
1
Port 4 is the priority port
2
0
Non Selected
X
5V HPD of non-selected ports follows the state of the 5V_PWR pin
port HPD
follows
1
Non Selected
HPD of non-selected ports remains high impedance
port HPD High
Impedance
1:0
Bit 1
Bit 0
Output Edge Rate Control
1
Fastest Edge Rate + 90ps
1
0
Fastest Edge Rate +60ps
0
1
Fastest Edge Rate + 30ps
0
X
Fastest Edge Rate
During switching of modes between Auto-select on/off, it is required that the sink microcontroller reads the
register 0x01 to see which port is selected. Register 0x02 is Read/Write.
Copyright 2008, Texas Instruments Incorporated
7
Product Folder Link(s) :TMDS461
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