m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 155

• 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 2.8.18. Initialization procedure of frequency synthesizer and USB function control unit (2)
USB block enabled (Note)
USB clock enabled
Selecting ATTACH/DETACH
When using f
Note: After the USB block is enabled (USBC7 set to “1”), a minimum delay of 187.5ns is needed
b7
b7
0
b7
b7
1
0
0
before performing any other USB register read/write operations.
0
0
1
1
0
page 146 of 354
0
0
0
0
0
0
SYN
0
0
0
0
0
as a main clock
0
0
b0
b0
1
b0
b0
0
0
Clock source selection bit
Divide-by-3 option
Frequency synthesizer clock control register [Address 03DB
FSCCR
USB control register [Address 000C
USBC
USB clock enable bit
USB control register [Address 000C
USBC
USB Attach/Detach register [Address 001F
USBAD
Port 9
Attach/Detach
Reserved bit
USB enable bit
1 : f
0 : Normal
1 : Divide-by-3 (Note)
1 : Enable (Supply 48MHZ clock)
0 : Normal mode for Port 90
1 : Forces Port 9
0 : Detach
1 : Attach
1 : USB blobk enabled
Continued from the previous page
SYN
0
-Second
•When selecting ATTACH function: Set “03
•When ATTACH function disabled: Set “00
0
to operate as pull up for D+.
Note: When this bit is “1”, set FSD to “02
16
16
]
]
16
]
16
16
”
”
16
]
16
”.
2. USB function