MMCCMB2107 Freescale, MMCCMB2107 Datasheet - Page 93

• Manufacturer Part Number: MMCCMB2107
• Manufacturer: Freescale

Specifications of MMCCMB2107

• Lead Free Status / RoHS Status: Not Compliant

3.7 Memory Map and Registers
3.7.1 Programming Model
MMC2107 – Rev. 2.0
MOTOROLA
This subsection provides a description of the memory map and registers.
The CCM programming model consists of these registers:
Some control register bits are implemented as write-once bits. These
bits are always readable, but once the bit has been written, additional
writes have no effect, except during debug mode and test operations.
Some write-once bits and test bits can be read and written while in debug
mode or test mode. When debug or test mode is exited, the chip
configuration module resumes operation based on the current register
values. If a write to a write-once register bit occurs while in debug or test
mode, the register bit remains writable on exit from debug or test mode.
Table 3-2
All configurations
Debug operation (all modes)
Test operation (all modes)
Master mode
Single-chip mode
FAST mode
Emulation mode
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Freescale Semiconductor, Inc.
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The chip configuration register (CCR) controls the main chip
configuration.
The reset configuration register (RCON) indicates the default chip
configuration.
The chip identification register (CIR) contains a unique part
number.
The chip test register (CTR) contains chip-specific test functions.
Table 3-2. Write-Once Bits Read/Write Accessibility
Chip Configuration Module (CCM)
shows the accessibility of write-once bits.
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Configuration
Read-always
Write-always
Write-always
Write-once
Write-once
Write-once
Write-once
Chip Configuration Module (CCM)
Read/Write Access
Memory Map and Registers
Technical Data
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