MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 596

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

JTAG Test Access Port and OnCE
22.14.5 OnCE Decoder (ODEC)
22.14.6 Memory Breakpoint Logic
Advance Information
596
The ODEC receives as input the 8-bit command from the OCMR and
status signals from the processor. The ODEC generates all the strobes
required for reading and writing the selected OnCE registers.
Memory breakpoints can be set for a particular memory location or on
accesses within an address range. The breakpoint logic contains an
input latch for addresses, registers that store the base address and
address mask, comparators, attribute qualifiers, and a breakpoint
counter.
memory breakpoint logic. This logic is duplicated to provide two
independent breakpoint resources.
DSO
Freescale Semiconductor, Inc.
DSCK
For More Information On This Product,
Figure 22-12
DSI
JTAG Test Access Port and OnCE
Figure 22-12. OnCE Memory Breakpoint Logic
Go to: www.freescale.com
ADDRESS MASK REGISTER X
ADDRESS BASE REGISTER X
MEMORY ADDRESS LATCH
ADDRESS COMPARATOR
BREAKPOINT COUNTER
illustrates the basic functionality of the OnCE
ADDR[31:0]
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
COUNT = 0
MATCH
DEC
ATTR
QUALIFICATION
BREAKPOINT
MEMORY
MOTOROLA
ISBKPTx
BC[4:0], RCx
BREAKPOINT
MATCH
OCCURRED