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參數(shù)資料
| 型號： | EM78612 |
| 英文描述： | Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 16-QFN |
| 中文描述： | USB控制器 |
| 文件頁數(shù)： | 8/29頁 |
| 文件大?。?/td> | 692K |
| 代理商： | EM78612 |
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EM78612
Universal Serial Bus Microcontroller Series
This specification may change without further notice.
16
3/5/2003 (V1.0)
IOC8 (Sink Current Control Register)
Default Value: (0B_0000_0000)
7
6
5
4
3
2
1
0
Sink1.1
Sink1.0
0
Sink01
Sink0.0
IOC8 [0,1][4,5] are P70/P71 sink current control registers. Four levels are offered for
selection:
Sink0.1/1.1
Sink0.0/1.0
Sink Current
0
3mA
±10%
0
1
6mA
±10%
1
0
12mA
±10%
1
30mA
±10%
The default current after Power-on reset is 3mA.
IOCA (Operation Mode Control Register)
Default Value: (0B_1100_0011)
7
6
5
4
3
2
1
0
Dual_Frq.1
Dual_Frq.0
0
PS/2
USB
IOCA [0,1]
These two bits are used to select the operation mode. EM78612 can
auto-detect the type of port device being attached. After identifying the port, the
firmware will set these two bits to enter into a proper operation mode. The
definition of these two control registers is described in the table below.
IOCA[1]
IOCA[0]
Operation Mode
0
Detect Mode
0
1
USB Mode
1
0
PS/2 Mode
1
USB Test Mode
IOCA [2~5] Undefined registers. The default value is 0.
IOCA [6,7]
Select the operation frequency in Dual Clock mode. Four frequencies are
available and can be chosen as Dual Clock mode for running the MCU
program.
Dual_Frq.1
Dual_Frq.0
Frequency
0
500Hz
0
1
4kHz
1
0
32kHz
1
256kHz
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| EM78701 | 制造商:TE Connectivity 功能描述: |
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