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| 型號(hào)： | M30240F4 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| 中文描述： | 單片16位CMOS微機(jī) |
| 文件頁(yè)數(shù)： | 134/142頁(yè) |
| 文件大?。?/td> | 1637K |
| 代理商： | M30240F4 |
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1-134
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Frequency Synthesizer Interface and DC-DC Converter
5.0 Applications
5.1 Frequency Synthesizer Interface and DC-DC Converter
This section presents the recommended method of setting up and using the frequency synthesizer
that generates the 48MHz clock needed by the USB FCU and the DC-DC converter that provides pow-
er to the D+/D- drivers
5.1.1 Reset of USB Related Registers
Figure 1.117: SFR Reset Venn Diagram
The special function registers (SFRs) that govern the operation of the frequency synthesizer, DC-DC
converter and USB FCU are affected by one or more reset events. The addresses of the special func-
tion registers (SFRs) that are affected by Hardware Reset, USB Reset, or both are shown in Figure
1.117.
All resettable SFRs, including SFRs and other registers internal to the USB FCU, are affected by a
Hardware Reset, which occurs when the RESET pin is brought low or an undefined opcode is fetched.
See Section 2.4 for a complete listing of SFRs and their reset values.
Only registers internal to the USB FCU are reset when a USB Reset sent by the Host/Hub is detected.
These USB registers are reset to their default values except for bit 5 of USBIS2 (USB Reset Interrupt
Status Flag), which is set to a “1”. USB FCU registers are registers from address 300
16
to 33C
16
and
all other registers within the USB FCU, many of which the MCU does not have direct access to (e.g.
FIFO address pointers). The USB FIFO registers are empty after USB reset because the FIFO ad-
dress pointers are reset. However, the physical contents of the FIFOs are not set to all ‘1‘s or all ‘0‘s.
Other SFRs such as USBC, FSC, and CM0, CM1 are not affected by a USB Reset.
Hardware Reset
USB Reset
SFR Registers:
0004
16
to 005F
16
,
000C (USBC),
378
16
to 3FF
16
3DC
16
(FSC)
SFR Registers:
300
16
to 33C
16
(USB FCU registers)
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| M30240F6 | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F7 | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F8 | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F9 | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M30240F4-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F5 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F5-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F6 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240F6-XXXFP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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