SDA6000 Datasheet, PDF (265/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Peripherals
implemented. It uses two different modes and an additional pre divider. Low baud rates
may be configured at high precision in mode 0 which is compatible with older versions.
High baud rates may be configured precisely in mode 1.
Mode 0: Reciprocal Divider
The resulting baud rate is
B_IIC = -₄----_â‹---₍---_B--^f--_R-^c---^p-_P--^u---₊-----₁----₎
Mode 1: Fractional Divider
The resulting baud rate is
BRP = -₄----^f_â‹---^c_B--^p---_Iu-_I--_C-- – 1
B_IIC = -^f---^c---^p--₁-^u--₀--^â‹-₂--^B--₄---^R----^P---
BRP = -¹---⁰---²---⁴-----^â‹---^B-----^I-^I--^C--
f _cpu
Table 7-24
BRPMOD
0
1
I²C-Bus Baud Rate Selection @ 33.33 MHz CPU-Freq.
BRP @ 100 kBaud
BRP @ 400 kBaud
PREDIV
= 00_B
52_H
03_H
PREDIV
= 01_B
0A_H
–
PREDIV
= 10_B
1_H
–
PREDIV
= 00_B
14_H
0C_H
PREDIV
= 01_B
02_H
02_H
PREDIV
= 10_B
–
–
Users Manual
7 - 114
2000-06-15