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參數(shù)資料
| 型號： | TH6503 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB Low-Speed Interface |
| 中文描述： | USB低速接口 |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 342K |
| 代理商： | TH6503 |
14
TH6503 USB Low-Speed Interface
BridgeConfigRegister
(write only)
Bits only take effect after the data IN transfer
has been completed.
Internal address: b111
Size :
8 bits
Register
Description
(continued)
Bit
Number
Bit
Mnemonic
Reset
Status
Function
6
OS
0
OCLK Static
is set and reset by microcontroller
if set the OCLK pin drives a static level on the OCLK pin, this level
depends on the SMC bit in the BridgeConfigRegister
OS SMC OCLK Output
0 0 Clock, programmed by OCR<1-0> bits
0 1 0
1 0 0
1 1 1
can be used as ending stop state signal for an external microcontroller
with own clock
works like a low active interrupt
5
FR
0
Force Resume
terminates suspend mode
is set by microcontroller if data is sent from connected device
the TH6503 signals a Resume to the USB host
the timing (10-15 ms) of the Resume State must be done by
microcontroller
4
SUS
0
Suspend
sets the TH6503 in suspend mode
should be set by the microcontroller if no bus traffic is detected for longer
than 3 ms
can be set and reset by microcontroller only
3
SO
0
Stop Oscillator
stops the microcontroller and the USB bridge (the SMC bit is set
automatically)
is set by the microcontroller
is reset by an external wake up signal, USB activity or reset
2
SMC
0
Stop Microcontroller Clock
stops the microcontroller
is set by the microcontroller
is reset by an external wake up signal, USB activity or reset
only affects the OCLK pin
1-0
OCR1-0
0 0
Out Clock Rate
output frequency on the OCLK pin
0 0 1.5 MHz (default)
0 1 2.0 MHz
1 0 3.0 MHz
1 1 6.0 MHz, without guarantee of symmetry, it depends on the
quality of the oscillation element
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