Fujitsu MB86R02 Jade-D Hardware Manual page 777

Graphics controller

Hide thumbs Also See for MB86R02 Jade-D:

Table of Contents

MB86R02 'Jade-D' Hardware Manual V1.64

To calculate transfer baud rate

Transfer baud rate (bps) = (APB clock frequency (Hz)/Frequency dividing value)/16

Example of frequency dividing value (DLM and DLL values) and baud rate is shown in Table 28-2.

Table 28-2 Example of frequency dividing value (DLM and DLL values) and baud rate

(external input condition: CLK = 25.0MHz,

Transmission baud rate on the other party and baud rate used by macro are able to receive data

properly within the permissible error range. Out of the range causes reception error.

Baud rate's permissible error range that macro permits is shown below.

104.1% > Macro baud rate (100%) > 95.3%

When baud rate used by macro is within the reception baud rate's permissible error range of the

other party, data is able to be received. Out of the range causes error on the other party side.

After the reset (MR = 1), it takes 1/4 bit of time from setting DLL and DLM to enable start bit

detection. Although start bit (SIN = 0) is received in the period, proper start bit detection is not

MB86R02 'JADE-D' baud rate

APB clock = 41.663(MHz)

CRIPM[3:0] = 0001)

The other party's baud rate

(error range)

4800 (99.9%)

9600 (99.9%)

14400 (100.1%)

19200 (100.3%)

28800 (99.5%)

38400 (100.3%)

57600 (99.5%)

115200 (101.8%)