m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 177

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.8.30. USB resume interrupt request processing routine
Setting frequency synthesizer control register
Clearing the protect
Wait till the frequency synthesizer stabilized
Setting USB control register
Clearing the protect
b7
Note: Check the frequency synthesizer lock status bit. It is necessary to recheck
b7
b7
b7
b7
1
after a wait of 0.1ms if it is “0”.
1
0
0
0
0
0
page 168 of 354
0
0
0
0
0
USB resume interrupt request process is complete
b0
0
b0
1
b0
b0
0
1
b0
Detection of USB resume interrupt request
Protect register [Address 000A
PRCR
Frequency Synthesizer enable bit
USB clock enable bit
Frequency synthesizer control register [Address 03DC
FSC
Protect register [Address 000A
PRCR
USB control register [Address 000C
USBC
Enable bit for writing to system clock control registers 0 and 1
and frequency synthesizer related registers
Enable bit for writing to system clock control registers 0 and 1
and frequency synthesizer related registers
Frequency synthesizer control register [Address 03DC
FSC
Frequency synthesizer lock status bit
1 : Enabled
1: Enable (Supply 48MHZ clock)
1 : Write-enabled
0 : Write-disabled
0 : Unlocked
1 : Locked (Frequency synthesizer stabilized)
Wait for 2ms
16
16
]
]
16
]
16
16
]
]
2. USB function