6 chip select configuration, 7 reset, 8 interrupts – Motorola ColdFire MCF5281 User Manual

Page 538: 6 chip select configuration -10, 7 reset -10 27.8 interrupts -10

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Chip Configuration Module (CCM)

27-10

Freescale Semiconductor

27.6.6

Chip Select Configuration

The chip select configuration (CS[6:4]) is selected during reset and reflected in the RCSC field of the CCR.
Once reset is exited, the chip select configuration cannot be changed.

Table 27-8

shows the different chip

select configurations that can be implemented during reset configuration.

27.7

Reset

Reset initializes CCM registers to a known startup state as described in

Section 27.5, “Memory Map and

Registers

.” The CCM controls chip configuration at reset as described in

Section 27.6, “Functional

Description

.”

27.8

Interrupts

The CCM does not generate interrupt requests.

Table 27-11. Clock Mode Selection

Clock Mode

CLKMOD[1:0]

Synthesizer Status Register (SYNSR)

PLLSEL

PLLREF

PLLMOD

External clock mode (PLL disabled)

00

0

0

0

1:1 PLL mode

01

0

0

1

Normal PLL mode, external clock reference

10

1

0

1

Normal PLL mode, crystal oscillator reference

11

1

1

1

MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3

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