Motorola DSP56309 User Manual page 280

10.5.1 OnCE Memory Address Latch (OMAL)
The OMAL is a 16-bit register that latches the PAB, XAB or YAB on every instruction
cycle according to the MBS1ÐMBS0 bits in OBCR.
10.5.2 OnCE Memory Limit Register 0 (OMLR0)
The OMLR0 is a 16-bit register that stores the memory breakpoint limit. OMLR0 can be
read or written through the JTAG port. Before enabling breakpoints, OMLR0 must be
loaded by the external command controller.
10.5.3 OnCE Memory Address Comparator 0 (OMAC0)
The OMAC0 compares the current memory address (stored in OMAL0) with the
OMLR0 contents.
10.5.4 OnCE Memory Limit Register 1 (OMLR1)
The OMLR1 is a 16-bit register that stores the memory breakpoint limit. OMLR1 can be
read or written through the JTAG port. Before enabling breakpoints, OMLR1 must be
loaded by the external command controller.
10.5.5 OnCE Memory Address Comparator 1 (OMAC1)
The OMAC1 compares the current memory address (stored in OMAL0) with the
OMLR1 contents.
MOTOROLA DSP56309UM/D
On-Chip Emulation Module
OnCE Memory Breakpoint Logic
10-11