dsp56001a Freescale Semiconductor, Inc, dsp56001a Datasheet - Page 78

• Manufacturer Part Number: dsp56001a
• Description: 24-bit Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

DSP56001A
Substituting the DSP56001A for the DSP56001
The OMR and the Status Register on the DSP56001A have been altered from those on the
DSP56001. Refer to Table 4-2 for details of these alterations.
The DSP56001A’s Host Command Vector Register (CVR) also differs from that of the DSP56001
(see Table 4-3).
4-4
Status Register
Operating Mode
Register
Port B Control
Register
Host Command
Vector Register
(CVR)
REGISTER
REGISTER
CONTROL REGISTERS
HOST COMMAND VECTOR REGISTER
Table 4-3 Summary of Host Command Vector Register Differences
BIT
BIT
14
Table 4-2 Summary of Control Register Differences
7
3
1
5
Reserved
Read/Written as
zero.
Reserved
Read/Written as
zero.
Reserved
Read/.Written
as zero
Reserved
Written as zero.
Reserved
Read as zero.
DEFINITION
DEFINITION
Freescale Semiconductor, Inc.
DSP56001
DSP56001
For More Information On This Product,
—
—
—
—
—
DSP56001A/D, Rev. 1
Go to: www.freescale.com
Reserved
as don’t care.
Reserved
Read as don’t
care.
Reserved
Write as zero
only, read as
don’t care.
Reserved
Write as zero
only, read as
don’t care.
Reserved
Written as zero.
DEFINITION
DEFINITION
DSP56001A
DSP56001A
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Read
On the 001A this bit may be
read as 0 or 1. The user should
not rely on this bit being a
given value.
If this bit is set on the 56001A,
the operations performed by
the Data ALU change, and
56001 code will yield
erroneous results. Write this bit
only as zero.
If this bit is set, memory reads
may be from incorrect
locations. Write this bit only as
zero.
Writing this bit as a 1 will result
in behavior differences between
the 001 and the 001A.
This bit should be written with
only a zero on the 56001A.
EXPLAINATION OF
EXPLAINATION OF
DIFFERENCE
DIFFERENCE
MOTOROLA