Fujitsu Series 3 Manual

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   12 
5.4.  USB-PLL Control Register 3 (UPCR3) 
The UPCR3 sets the frequency division ratio (K) of PLL macro for USB.  
 Register configuration 
bit 7 6 5 4 3 2 1 0 
Field Reserved UPLLK 
Attribute - R/W 
Initial value - 5'b00000 
 
  Register functions  
[bit  7:5] res: Reserved bits  
"0b000" is read from these bits.  
Set these bits to "0b000" when writing.  
[...

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   13 
5.5.  USB-PLL Control Register 4 (UPCR4) 
The UPCR4 Register sets the frequency division ratio (N) of PLL macro for USB.  
 Register configuration 
bit 7 6 5 4 3 2 1 0 
Field Reserved UPLLN 
Attribute - R/W 
Initial value - 5'b10111 
 
  Register functions  
[bit  7:5] res: Reserved bits  
"0b000" is read from these bits.  
Set these bits to "0b000" wh en...

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   14 
5.6.  USB-PLL Macro Status Register (UP_STR) 
The UP_STR indicates the macro status of USB -PLL.  
 Register configuration 
bit 7 6 5 4 3 2 1 0 
Field Reserved UPRDY 
Attribute - R 
Initial value - 1'b0 
 
  Register functions  
[bit  7:1] res: Reserved bits  
"0b0000000" is read from these bits.  
Set these bits to "0b0000000" when writing.  
[bit 0] UPRDY:...

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   15 
5.7.  USB- PLL Interrupt Enable Register (UPINT_ENR)  
The UPINT_ENR enables/disables the USB-PLL oscillation stabilization complete interrupt.  
 Register conf iguration 
bit 7 6 5 4 3 2 1 0 
Field Reserved UPCSE 
Attribute - R/W 
Initial value - 1'b0 
 
 Register functions  
[bit  7:1] res: Reserved bits  
"0b0000000" is read from these bits.  
Set these bits to...

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   16 
5.8.  USB- PLL Interrupt Status Register (UPINT_STR)  
The UPINT_STR indicates the status of USB-PLL oscillation stabilization wait interrupts.  
 Register configuration 
bit 7 6 5 4 3 2 1 0 
Field Reserved UPCSI 
Attribute - R 
Initial value - 1'b0 
 
  Register functions  
[bit  7:1] res: Reserved bits  
"0b0000000" is read from these bits.  
Set these bits to...

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   17 
5.9.  USB-PLL Interrupt Clear Register (UPINT_CLR) 
The UPINT_CLR is used to clear the USB -PLL interrupt cause.  
 Register config uration 
bit 7 6 5 4 3 2 1 0 
Field Reserved UPCSC 
Attribute - W 
Initial value - 1'b0 
 
 Register functions  
[bit  7:1] res: Reserved bits  
"0b0000000" is read from these bits.  
Set these bits to "0b0000000" when writing....

   5. Register List  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   18 
5.10.  USB Enable Request Register (USBEN) 
The USBEN enables/disables USB controller operation.  
 Register configuration 
bit 7 6 5 4 3 2 1 0 
Field Reserved USBEN 
Attribute - R/W 
Initial value - 1'b0 
 
  Register functions  
[bit  7:1] res: Reserved bits  
"0b0000010" is read f rom these bits. 
Set these bits to "0b0000010" when writing.  
[bit 0]...

   6. Usage Precautions  FUJITSU SEMICONDUCTOR LIMITED 
Chapter: USB  Clock Generation  
FUJITSU SEMICONDUCTOR CONFIDENTIAL   19 
6.  Usage Precautions 
This section explains the precautions for using clock generation unit.  
⋅  Setting clock output and stopping PLL macro  
Do not disable the  USB clock output (UCEN = 0) and select the USB clock (UCSEL) at the same time.  
Be sure to disable the USB clock output before selecting the USB clock.  
⋅   Setting the frequency division ratio of PLL oscillation...

 
1. Overview of USB Function 
 
Chapter: USB Function 
This chapter explains the USB function. 
 
1.
 Overview of USB Function 
2. Configuration of USB Function 
3. Operations of USB Function 
4. Examples of USB Function Setting Procedures 
5. USB Function Registers 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CODE: FW03F-E18.1 
FUJITSU SEMICONDUCTOR LIMITED 
CHAPTER  20-2: USB Function 
MN706-00002-1v0-E 
1073 
MB9Axxx/MB9Bxxx  Series  

 
1. Overview of USB Function 
 
1.  Overview of USB Function 
The USB function is an interface supporting the USB (Universal Serial Bus) communication 
protocol.It supports full-speed transfer mode (12 Mbps), and has the following features. 
1.1.  Features of USB function 
  Full-speed (12 Mbps) transfer supported. 
   Auto answered device status. 
   Automatic generation and check of bit stripping, bit stuffing, CRC5, and CRC16. 
   Toggle check by data synchronization bit. 
   Auto-answer to...