MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 291

• Manufacturer Part Number: MC68MH360EM25L
• Description: IC MPU QUICC ETHER 25MHZ 240FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360EM25L

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Table 6-7 shows which combinations of A0-A1 and SIZ1-SIZ0, on eitherthe external bus or
the IMB bus, assert the BKPT pin.
NEG—Negative Breakpoint Match
MA1–MA0—Mask Address
AS8–AS0—Address Space Bits
MOTOROLA
This bit allows the breakpoint match to occur, using negative address matching logic,
when a block address is selected. If this bit is set, the rest of the address and address
match logic define when a breakpoint match is not to occur. The R/W, size, and FC com-
pare logic are not affected by the NEG bit.
The address mask bits allow the breakpoint logic to assert the breakpoint on a memory
block boundary.
The address space field allows particular address spaces (function code combinations) to
be masked during the breakpoint match decision. If an address space is masked, an ac-
cess to this space will NOT assert the BKPT pin. To ignore function codes in the break-
point match decision, program these bits to zero. The address space bits are:
AS8—Mask DMA space address space (FC3–FC0 = 1xxx)
AS7—Mask CPU space address space (FC3–FC0 = 0111)
AS6—Mask supervisor program address space (FC3–FC0 = 0110)
AS5—Mask supervisor data address space (FC3–FC0 = 0101)
AS4—Mask [Motorola reserved] address space (FC3–FC0 = 0100)
AS3—Mask [user reserved] address space (FC3–FC0 = 0011)
AS2—Mask user program address space (FC3–FC0 = 0010)
AS1—Mask user data address space (FC3–FC0 = 0001)
AS0—Mask [Motorola reserved] address space (FC3–FC0 = 0000)
0 = Assert a breakpoint when the memory cycle matches the programmed values.
1 = Assert a breakpoint when the memory cycle does not match the programmed block
00 = No address bits are masked, 32 address bits are compared.
01 = Mask address bits 10–0; the block size is 2K.
10 = Mask address bits 12–0; the block size is 8K.
11 = Mask address bits 14–0; the block size is 32K.
address. NEG is ignored if the MA bits are 00.
The table is true for the case SIZM=1.
Breakpoint will be asserted ONLY if the programmed address is
actually accessed.
Using the NEG bit, the breakpoint can be asserted for accesses
that fall into the block range or for those that fall out of the block
range.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
NOTE
NOTE
System Integration Module (SIM60)
6-47