Motorola MCF5281, MCF5282 user manual Memory Map and Registers

Memory Map and Registers

9.5.2XTAL

This output is an internal oscillator connection to the external crystal.

9.5.3CLKOUT

This output reflects the internal system clock.

9.5.4CLKMOD[1:0]

These inputs are used to select the clock mode during chip configuration.

9.5.5RSTOUT

The RSTOUT pin is asserted by one of the following:

•Internal system reset signal

•FRCRSTOUT bit in the reset control status register (RCR); see Section 28.4.1, “Reset Control Register (RCR).”

9.6Memory Map and Registers

The clock module programming model consists of these registers:

•Synthesizer control register (SYNCR), which defines clock operation

•Synthesizer status register (SYNSR), which reflects clock status

9.6.1Module Memory Map

Table 9-3. Clock Module Memory Map

IPSBAR Offset	Register Name	Access 1
0x0012_0000	Synthesizer Control Register (SYNCR)	S
0x0012_0002	Synthesizer Status Register (SYNSR)	S

1S = CPU supervisor mode access only.

MOTOROLA Chapter 9. Clock Module 9-5