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參數(shù)資料
| 型號(hào)： | M37753S4CHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, 40 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | PLASTIC, QFP-80 |
| 文件頁數(shù)： | 7/112頁 |
| 文件大?。?/td> | 1451K |
| 代理商： | M37753S4CHP |
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6. Functional Description
86
EPSON
S1R72V17*** Technical Manual (Rev.1.6)
6.3.9.1.7
RESUME
This is the state where a USB resume signal is issued to the downstream port.
The LSI shifts to this state from SUSPEND in order to restore the USB device from a
suspend state.
The LSI shifts to this state when the host state transition execution
(H_NegoControl_0.AutoMode) is set to GoRESUME.
In this state, the disconnection and remote wakeup detection functions are automatically
turned off, and a resume signal (K) of a designated duration is issued. When issuance of the
resume signal is complete, the port is set back to its previous mode before shifting to
SUSPEND, and is set to NormalOperation. In addition, a suspend complete status
(H_SIE_IntStat_0.ResumeCmp) is issued to the firmware.
6.3.9.2
Detection Functions
6.3.9.2.1
VBUS Error Detection
A VBUS error is detected by a level change (from high to low) at the VBUSFLG input pin.
The procedure that is executed when a VBUS error is detected is described below. Procedure
step (2) below is automatically executed by the LSI’s hardware.
(1) Pull the VBUSFLG (error flag for external USB power switch) input pin low (error
occurred) (T0).
(2) Issue a VBUS error detected status (HostIntStat.VBUS_Err) to the firmware (T0).
Note that when the host detects a VBUS error, the VBUS must be turned off immediately.
Therefore, the firmware should write 0x80 to the H_NegoControl_0 register
(H_NegoControl_0.AutoModeCancel = 1 and H_NegoControl_0.AutoMode = 0x0) to cause
operation of the state under execution to stop. The H_NegoControl_0.AutoModeCancel bit is
cleared to 0 by a completion of the stop process (6 cycles required when operating with 60
MHz clock). After confirming that the H_NegoControl_0.AutoModeCancel bit is cleared to
0, write 0x01 to the same register (which sets the host state transition execution
(H_NegoControl_0.AutoMode) to GoIDLE). This will cause the host to shift to IDLE state
and the VBUSEN pin logic to be disabled, with the result of VBUS being turned off.
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相關(guān)代理商/技術(shù)參數(shù) |
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| M37754 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16BIT CMOS MICROCOMPUTER |
| M37754FFCGP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION |
| M37754FFCHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER FLASH MEMORY VERSION |
| M37754M6C-XXXGP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37754M6C-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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