參數(shù)資料
型號: TUSB3410VF
英文描述: BUS CONTROLLER
中文描述: 總線控制器
文件頁數(shù): 35/92頁
文件大?。?/td> 317K
代理商: TUSB3410VF
5
3
5.1.4
USBCTL: USB Control Register
(Addr:FFFC)
Unlike the rest of the registers, this register is cleared by the power-up reset signal only. The USB reset cannot reset
this register (see Figure 5
1
)
.
7
6
5
4
3
2
1
0
R/W
R/O
R/W
R/W
R/W
R/O
R/W
R/W
BIT
0
NAME
DIR
RESET
0
As a response to a setup packet, the MCU decodes the request and sets/clears this bit to reflect the data transfer
direction.
DIR = 0
DIR = 1
USB data-OUT transaction (from host to TUSB3410)
USB data-IN transaction (from TUSB3410 to host)
1
SIR
0
SETUP interrupt-status bit. This bit is controlled by the MCU to indicate to the hardware when the SETUP interrupt
is being served.
SIR = 0
SIR = 1
SETUP interrupt is not served. The MCU clears this bit before exiting the SETUP interrupt routine.
SETUP interrupt is in progress. The MCU sets this bit when servicing the SETUP interrupt.
2
RSV
0
Reserved = 0
3
4
RSV
FRSTE
0
1
Reserved = 0
Function reset-connection bit. This bit connects/disconnects the USB function reset to/from the MCU reset.
FRSTE = 0
FRSTE = 1
Function reset is not connected to MCU reset
Function reset is connected to MCU reset
5
RWUP
0
Device remote wakeup request. This bit is set by the MCU and is cleared automatically.
RWUP = 0
RWUP = 1
Writing a 0 to this bit has no effect
When MCU writes a 1, a remote-wakeup pulse is generated.
6
IREN
0
IR mode enable. This bit is set and cleared by firmware.
IREN = 0
IREN = 1
IR encoder/decoder is disabled, UART mode is selected
IR encoder/decoder is enabled, UART mode is deselected
7
CONT
0
Connect/disconnect bit
CONT = 0
CONT = 1
Upstream port is disconnected. Pullup disabled.
Upstream port is connected. Pullup enabled.
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