Fujitsu 8FX User Manual

MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 257
CHAPTER 14 LIN-UART
14.7 Registers
14.7.7 LIN-UART Baud Rate Generator Registers 1, 0
(BGR1, BGR0)
The LIN-UART baud rate generator registers 1, 0 (BGR1, BGR0) set the division
ratio of the serial clock. In addition, the count value in the transmit reload
counter is read from this generator.
■ Register Configuration
■ Functions of BGR1 Register
[bit7] Undefined bit
The read value is always "0". Writing a value to this bit has no effect on operation.
[bit6:0] BGR[14:8]
■ Functions of BGR0 Register
[bit7:0] BGR[7:0]
The LIN-UART baud rate generator registers set the division ratio of the serial clock.
BGR1 corresponds to the upper bits and BGR0 to the lower bits. The reload value of the counter can be
written to and the transmit reload counter value can be read from BGR1 and BRG0. In addition, BGR1 and
BGR0 can be accessed by byte access and word access.
Writing a reload value to the LIN-UART baud rate generator registers causes the reload counter to start
counting.
Write values to the BGR1 register or the BGR0 register only when the LIN-UART has stopped operating.
BGR1
bit 7 6 5 4 3 2 1 0
Field — BGR14 BGR13 BGR12 BGR11 BGR10 BGR9 BGR8
Attribute — R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
BGR0
bit 7 6 5 4 3 2 1 0
Field BGR7 BGR6 BGR5 BGR4 BGR3 BGR2 BGR1 BGR0
Attribute R/W R/W R/W R/W R/W R/W R/W R/W
Initial value 0 0 0 0 0 0 0 0
bit6:0 Details
Read access: Reads the values of bit8:14 in the transmit reload counter.
Write access: Writes values to bit8:14 in the reload counter.
bit7:0 Details
Read access: Reads the values of bit0:7 in the transmit reload counter.
Write access: Writes values to bit0:7 in the reload counter.

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English