MAC7200 datasheet(629/976 Pages) FREESCALE

Part #	MAC7200

Description	MAC7200 Microcontroller Family Reference Manual

PDF	976 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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Memory Map/Register Definition

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

551

Table 29-3. IBFD Field Descriptions

Field

Description

7–0

IBC

I-Bus Clock Rate. This field is used to prescale the clock for bit rate selection. The bit clock generator is implemented

as a prescale divider. The IBC bits are decoded to give the Tap and Prescale values as follows:

7–6 select the prescaled shift register (see Table 29-4)

5–3 select the prescaler divider (see Table 29-5)

2–0 select the shift register tap point (see Table 29-6)

Table 29-4. I-Bus Multiplier Factor

IBC7

–6MUL

RESERVED

Table 29-5. I-Bus Prescaler Divider Values

IBC5

–3

scl2start

(clocks)

scl2stop

(clocks)

scl2tap

(clocks)

tap2tap

(clocks)

000

2741

001

2742

010

2964

011

6968

100

14171416

101

30333032

110

62656264

111

126

129

126

128

Table 29-6. I-Bus Tap and Prescale Values

IBC2-0

SCL Tap

(clocks)

SDA Tap

(clocks)

000

001

010

011

100

101

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