Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask: 2K30A
Freescale Semiconductor, Inc...
General remark: In order to prevent the use of instructions or sequences of instructions that
do not operate correctly, we encourage you to use the “lint563” program to identify such
cases and use alternative sequences of instructions. This program is available as part of the
Motorola DSP Tools CLAS package.
Silicon Errata
Errata
Number
ES133
Errata Description
Applies
to Mask
Description (added 8/16/2001):
2K30A
Some K30A devices shipped under an XC part number are subject to a problem
if operated in DMA mode 5. The problem occurs if two consecutive host
commands are sent to the DSP. The second host command is received, the
corresponding answer message is composed, and the DMA channel is set up
correctly to transmit the message to the host. However, the message is never sent.
The host port status register shows a host transmit data request (bit HTRQ in
HSTR is set.) DTDn is never set, indicating there has been no terminated
transfer. Sequences of: 1. data, 2. host command to terminate the transfer, and
3. acknowledgement from the host work properly and can be repeated as often
as needed. If a second host command is sent to the DSP, without first sending
data, the DMA channel locks up. This problem has proven to be low level to
date, occurring at a rate of about 350 ppm. The product’s performance regarding
this issue does not drift over time; that is, it is not a reliability risk.
The problem can also be manifested in other modes when more than one DMA
channel is operating, with two or more channels moving data while one is
servicing the PCI FIFO. In this case, the channel servicing the PCI FIFO stalls
and the PCI bus enters an endless state of retries.
Motorola Semiconductor Products Sector
301CE2K30A_0_8
6501 William Cannon Drive West,
78735-8598
ForAustin,
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ng 12/19/02 pg. 1
1996-2002 Motorola
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Documentation Errata
Errata
Number
Applies
to Mask
Document Update
Freescale Semiconductor, Inc...
Description (revised 11/9/98):
2K30A
XY memory data move does not work properly if the X-memory
move destination is internal I/O and the Y-memory move source is
a register used as destination in the previous adjacent move from
non Y-memory OR the Y-memory move destination is a register
used as source in the next adjacent move to non Y-memory.
Here are examples of the two cases (where x:(r1) is a peripheral):
Example 1:
ED1
move #$12,y0
move x0,x:(r7) y0,y:(r3) (while x:(r7) is a peripheral).
Example 2:
mac
move
x1,y0,a x1,x:(r1)+
y0,y1
y:(r6)+,y0
This is not a bug, but a documentation update. Any of the following
alternatives can be used:
a.
Separate these two consecutive moves by any other
instruction.
b. Split XY Data Move to two moves.
Description (added 10/09/1997):
ED2
2K30A
BL pin timings T198 and T199 in the Data Sheet are changed,
improving the arbitration latency:
T198 is 5 ns (max), T199 is 0 ns (min).
This is not a bug, but a documentation update.
Description (added 10/09/1997):
ED3
2K30A
A one-word conditional branch instruction at LA-1 is not allowed.
This is not a bug, but a documentation update.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 10/09/1997):
2K30A
The following instructions should not start at address LA:
Freescale Semiconductor, Inc...
ED4
MOVE to/from Program space {MOVEM, MOVEP (only the P
space options)}
This is not a bug but a documentation update (Appendix B,
DSP56300 Family Manual).
Description (added 4/13/98):
ED6
When the HIRQ pin is used in pulse mode (HIRH=0 in DCTR), the
LT[7:0] value (in CLAT) should not be zero. This is not a bug but a
documentation update.
Description (added 1/27/98):
ED7
2K30A
2K30A
When activity passes from one DMA channel to another and the
DMA interface accesses external memory (which requires one or
more wait states), the DACT and DCH status bits in the DMA
Status Register (DSTR) may indicate improper activity status for
DMA Channel 0 (DACT = 1 and DCH[2:0] = 000).
Workaround:
None.
Pertains to: DSP56300 Family Manual, Sections 8.1.6.3 and 8.1.6.4
Description (added 10/09/1997):
2K30A
The timing for HSAK is no longer qualified by the data strobe. The
new timing numbers are:
ED8
a. T318—HSAK assertion from HA0–HA10 and HAEN valid is
30.0 ns maximum.
b. T319—HSAK assertion hold from HA0-HA10 and NAEN not
valid is 2.0 ns minimum.
This is not a bug, but a documentation update of a specification
change.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 3
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
2K30A
Description (added 1/27/98):
Freescale Semiconductor, Inc...
When the SCI is configured in Synchronous mode, internal clock, and all
the SCI pins are enabled simultaneously, an extra pulse of 1 DSP clock
length is provided on the SCLK pin.
ED9
Workaround:
a. Enable an SCI pin other than SCLK.
b. In the next instruction, enable the remaining SCI pins, including the
SCLK pin.
Pertains to: UM, SCI Chapter (Use the 302 UM as your reference,
Section 8.4.2, “SCI Initialization”)
Description (added 5/13/98):
ED10
2K30A
The HI32 may operate improperly in PCI mode when the TWSD bit
is set in the HCTR register.
Workaround:
Do not set the TWSD bit in the HCTR register; this bit is reserved.
This is a documentation change.
Description (added 5/13/98):
2K30A
When the HI32 is in PCI mode, the HTF control bits affect the
address insertion (the IAE bit is set in the DPCR register) in the
same way they affect the transferred data.
Address as appears on the PCI bus: $12345678
ED12
HTF[1:0]
Inserted Address
00
01
10
11
$005678,
$345678
$345678
$123456
$001234
Workaround:
This is a documentation update.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 4
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 5/15/98):
ED13
2K30A
When the HI32 is in PCI mode, the Insert Address Enable control
bit (IAE=1) can be set only with the Receive Buffer Lock Enable
control bit set (RBLE=1 in the DPCR register.)
Freescale Semiconductor, Inc...
Description (added 7/21/98):
ED15
2K30A
The DRAM Control Register (DCR) should not be changed while
refresh is enabled. If refresh is enabled only a write operation that
disables refresh is allowed.
Workaround:
First disable refresh by clearing the BREN bit, than change other
bits in the DCR register, and finally enable refresh by setting the
BREN bit.
Description (added 9/28/98):
ED17
2K30A
In all DSP563xx technical datasheets, a note is to be added under
"AC Electrical Characteristics" that although the minimum value
for "Frequency of Extal" is 0MHz, the device AC test conditions are
15MHz and rated speed.
Workaround:
ED18
N/A
Description (added 11/2/98):
2K30A
The PCI host must not change the values of the HBE[3:0] bits
during PCI read transactions from the HI32 as a PCI target.
Description (added 11/9/98):
2K30A
To guarantee the proper HI32 operation, the DMA should service
the HI32 under the following restrictions:
ED19
•
•
DSP56301 Errata
1996-2002, Motorola
Two DMA channels should not service the DRXR FIFO if
master and slave data is mixed there.
The DMA data transfers should not be concurrent with the
56300 Core data transfers to/from the same HI32 data
FIFO.
301CE2K30A_0_8
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ng 12/19/02 pg. 5
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 11/24/98):
2K30A
In the Technical Datasheet Voh-TTL should be listed at 2.4 Volts,
not as:
Freescale Semiconductor, Inc...
ED20
TTL = Vcc-0.4
Workaround:
This is a documentation update.
Description (added 11/24/98):
ED21
2K30A
In the Technical Datasheet Iol should be listed as 1.6 mA, not as 3.0
mA.
Workaround:
This is a documentation update.
Description (added 11/24/98):
ED24
2K30A
The technical datasheet supplies a maximum value for internal
supply current in Normal, Wait, and Stop modes. These values will
be removed because we will specify only a "Typical" current.
Workaround:
This is a documentation update.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 6
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 12/16/98):
2K30A
Freescale Semiconductor, Inc...
Current definition:
HDTC is set if SRRQ and MRRQ are cleared (i.e. the host-to-DSP
data path is emptied by DSP56300 core reads) under one of the
following conditions:
•
ED25
a non-exclusive PCI write transaction to the HTXR terminates or completes
• HLOCK is negated after the completion of an exclusive
write access to the HTXR
• the HI32 initiates a read transaction. The HI32 disconnects
(retry or disconnect-C) forthcoming write accesses to the
HTXR as long as HDTC is set.
New definition:
HDTC is set if SRRQ and MRRQ are cleared (i.e. the host-to-DSP
data path is emptied by DSP56300 Core reads) under one of the
following conditions:
•
a non-exclusive PCI write transaction to the HTXR terminates or completes
• HLOCK is negated after the completion of an exclusive
write access to the HTXR. The HI32 disconnects (retry or
disconnect-C) forthcoming write accesses to the HTXR as
long as HDTC is set.
Note: The HDTC bit is not set after a read transaction initiated by
the HI32 as a PCI master.
Workaround:
NTR
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 1/6/99):
2K30A
Freescale Semiconductor, Inc...
The specification DMA Chapter is wrong.
ED26
“Due to the DSP56300 Core pipeline, after DE bit in DCRx is set, the
corresponding DTDx bit in DSTR will be cleared only after two
instruction cycles.”
Should be replaced with:
“Due to the DSP56300 Core pipeline, after DE bit in DCRx is set, the
corresponding DTDx bit in DSTR will be cleared only after three
instruction cycles.”
2K30A
Description (added 1/12/99):
ED27
The PBGA mechanical package drawing in the 56301 and 56305 data
sheets is incorrect. The figure numbers of the incorrect drawings are
Figure 3-6 for the 56301 and Figure 3-3 for the 56305. The only incorrect
part is the bottom view above the label "VIEW M-M." This view
erroneously shows the number of pins on the package to be 256, but the
actual number of pins is 252. In the drawing, the four balls in the corners
should not appear.
Pertains to: Data sheet. To get the art, call Gordon Fowkes and ask.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 8
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 1/7/1997; identified as Documentation Errata
2/1/99):
2K30A
Freescale Semiconductor, Inc...
When two consecutive LAs have a conditional branch instruction
at LA-1 of the internal loop, the part does not operate properly. For
example, the following sequence may generate incorrect results:
ED28
DO #5, LABEL1
NOP
DO #4, LABEL2
NOP
MOVE (R0) +
BSCC _DEST
internal loop
NOP
LABEL2
NOP
LABEL1
NOP
NOP
_DEST NOP
NOP
RTS
; conditional branch at LA-1 of
; internal LA
; external LA
Workaround: Put an additional NOP between LABEL2 and
LABEL1.
Description (added 9/12/1997; identified as a Documentation
errata 2/1/99):
ED29
2K30A
When the ESSI transmits data with the CRA Word Length Control
bits
(WL[2:0]) = 100, the ESSI is designed to duplicate the last bit of the
24-bit transmission eight times to fill the 32-bit shifter. Instead, after
shifting the 24-bit word correctly, eight 0s are being shifted.
Workaround:
None at this time.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 9
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 9/12/1997; identified as a Documentation
errata 2/1/99):
Freescale Semiconductor, Inc...
ED30
2K30A
When the ESSI transmits data in the On-Demand mode (i.e., MOD
= 1 in CRB and DC[4:0] = $00000 in CRA) with WL[2:0] = 100, the
transmission does not work properly.
Workaround:
To ensure correct operation, do not use the On-Demand mode with
the
WL[2:0] = 100 32-bit Word-Length mode.
Description (added 9/12/1997; modified 9/15/1997; identified as
a Documentation errata 2/1/99):
ED31
2K30A
Programming the ESSI to use an internal frame sync (i.e., SCD2 = 1
in CRB) causes the SC2 and SC1 signals to be programmed as
outputs. If however, the corresponding multiplexed pins are
programmed by the Port Control Register (PCR) to be GPIOs, then
the GPIO Port Direction Register (PRR) chooses their direction, but
this causes the ESSI to use an external frame sync if GPI is selected.
Note: This errata and workaround apply to both ESSI0 and ESSI1.
Workaround:
To assure correct operation, either program the GPIO pins as
outputs or configure the pins in the PCR as ESSI signals.
Note: The default selection for these signals after reset is GPI.
Description (added 11/9/98; identified as a Documentation errata
2/1/99):
ED32
2K30A
When returning from a long interrupt (by RTI instruction), and the
first instruction after the RTI is a move to a DALU register (A, B, X,
Y), the move may not be correct, if the 16-bit arithmetic mode bit
(bit 17 of SR) is changed due to the restoring of SR after RTI.
Workaround:
Replace the RTI with the following sequence:
movec
nop
rti
DSP56301 Errata
1996-2002, Motorola
ssl,sr
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 10
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 12/16/98; identified as a Documentation errata
2/1/99):
2K30A
Freescale Semiconductor, Inc...
When Stack Extension mode is enabled, a use of the instructions BRKcc
or ENDDO inside do loops might cause an improper operation.
If the loop is non nested and has no nested loop inside it, the erratais
relevant only if LA or LC values are being used outside the loop.
Workaround:
If Stack Extension is used, emulate the BRKcc or ENDDO as in the
following examples. We split between two cases, finite loops and do
forever loops.
1) Finite DO loops (i.e. not DO FOREVER loops)
==============================================
BRKcc
Original code:
do #N,label1
.....
.....
do #M,label2
.....
.....
BRKcc
.....
.....
ED33
label2
.....
.....
label1
Will be replaced by:
do #N, label1
.....
.....
do #M, label2
.....
.....
Jcc
fix_brk_routine
.....
.....
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 11
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Freescale Semiconductor, Inc...
Errata
Number
Applies
to Mask
Document Update
nop_before_label2
nop
label2
.....
.....
label1
....
....
; This instruction must be NOP.
fix_brk_routine
move #1,lc
jmp nop_before_label2
ENDDO
-----Original code:
do #M,label1
.....
.....
do #N,label2
.....
.....
ENDDO
.....
.....
ED33 cont.
label2
.....
.....
label1
Will be replaced by:
do #M, label1
.....
.....
do #N, label2
.....
.....
JMP
fix_enddo_routine
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 12
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Document Update
Applies
to Mask
nop_after_jmp
NOP ; This instruction must be NOP.
.....
.....
label2
Freescale Semiconductor, Inc...
.....
.....
label1
....
....
fix_enddo_routine
move #1,lc
move #nop_after_jmp,la
jmp nop_after_jmp
ED33 cont.
2) DO FOREVER loops
===================
BRKcc
----Original code:
do #M,label1
.....
.....
do forever,label2
.....
.....
BRKcc
.....
.....
label2
.....
.....
label1
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Freescale Semiconductor, Inc...
Will be replaced by:
do #M,label1
.....
.....
do forever,label2
.....
.....
JScc
fix_brk_forever_routine
note: JScc and not Jcc
.....
.....
ED33 cont.
nop_before_label2
nop
label2
.....
.....
label1
....
....
; <---
; This instruction must be NOP.
fix_brk_forever_routine
move ssh,x:<..> ; <..> is some reserved not used
address (for temporary data)
move #nop_before_label2,ssh
bclr #16,ssl
;
move #1,lc
rti
; <---- note: "rti" and not "rts" !
ENDDO
-----Original code:
do #M,label1
.....
.....
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
do forever,label2
.....
.....
ENDDO
.....
.....
Freescale Semiconductor, Inc...
label2
.....
.....
label1
Will be replaced by:
ED33 cont.
do #M,label1
.....
.....
do forever,label2
.....
.....
JSR
fix_enddo_routine
; <--- note:
JSR and not JMP
nop_after_jmp
NOP ; This instruction should be NOP
.....
.....
label2
.....
.....
label1
....
....
fix_enddo_routine
nop
move #1,lc
bclr #16,ssl
move #nop_after_jmp,la
rti
; <--- note: "rti" and not "rts"
Pertains to: DSP56300 Family Manual, Section B-4.2, “General Do
Restrictions.”
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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ng 12/19/02 pg. 15
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 1/5/99; identified as a Documentation errata 2/1/99):
2K30A
Freescale Semiconductor, Inc...
When stack extansion is enabled, the read result from stack may be
improper if two previous executed instructions cause sequential read and
write operations with SSH. Two cases are possible:
Case 1:
For the first executed instruction: move from SSH or bit manipulation on
SSH (i.e. jclr, brclr, jset, brset, btst, bsset, jsset, bsclr, jsclr).
For the second executed instruction: move to SSH or bit manipulation on
SSH (i.e. jsr, bsr, jscc, bscc).
For the third executed instruction: an SSL or SSH read from the stack
result may be improper - move from SSH or SSL or bit manipulation on
SSH or SSL (i.e., bset, bclr, bchg, jclr, brclr, jset, brset, btst, bsset, jsset,
bsclr, jsclr).
ED34
Workaround:
Add two NOP instructions before the third executed instruction.
Case 2:
For the first executed instruction: bit manipulation on SSH (i.e. bset, bclr,
bchg).
For the second executed instruction: an SSL or SSH read from the stack
result may be improper - move from SSH or SSL or bit manipulation on
SSH or SSL (i.e., bset, bclr, bchg, jclr, brclr, jset, brset, btst, bsset, jsset,
bsclr, jsclr).
Workaround:
Add two NOP instructions before the second executed instruction.
Pertains to: DSP56300 Family Manual, Appendix B, add a new section
called “Stack Extension Enable Restrictions.” Cover all cases. Also, in
Section 6.3.11.15, add a cross reference to this new section.
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 16
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
2K30A
Description (added 4/19/99):
Freescale Semiconductor, Inc...
In paragraph 6.1.1.11 on page 6-12 of the 301 User’s Manual, there is an
error, as follows:
ED37
"HIRQ_ is asserted by the HI32 when a host interrupt request (recieve
and/or transmit) is generated in the HI32"
Workaround/correction:
Should be:
"HIRQ_ is asserted by the HI32 when a host interrupt request (receive
and/or transmit) is generated in the HI32 (as described in paragraphs
6.2.1.1, 6.2.1.1 and 6.2.1.4)."
Description (added 7/14/99):
ED38
2K30A
If Port A is used for external accesses, the BAT bits in the AAR3-0
registers must be initialized to the SRAM access type (i.e. BAT = 01)
or to the DRAM access type (i.e. BAT = 10). To ensure proper
operation of Port A, this initialization must occur even for an AAR
register that is not used during any Port A access. Note that at reset,
the BAT bits are initialized to 00.
Pertains to: DSP56300 Family Manual, Port A Chapter (Chapter
9 in Revision 2), description of the BAT[1 –0] bits in the AAR3 AAR0 registers. Also pertains to the core chapter in device-specific
user’s manuals that include a description of the AAR3 - AAR0
registers with bit definitions (usually Chapter 4).
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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Information On This Product,
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ng 12/19/02 pg. 17
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Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Freescale Semiconductor, Inc...
Errata
Number
Applies
to Mask
Document Update
Description (added 11/11/99):
When an instruction with all the following conditions follows a
repeat instruction, then the last move will be corrupted.:
1. The repeated instruction is from external memory.
2. The repeated instruction is a DALU instruction that includes 2
DAL registers, one as a source, and one as destination (e.g. tfr, add).
3. The repeated instruction has a double move in parallel to the
DALU instruction: one move’s source is the destination of the
DALU instruction (causing a DALU interlock); the other move’s
destination is the source of the DALU instruction.
Example:
2K30A
rep #number
tfr x0,a x(r0)+,x0 a,y0 ; This instruction is from external memory
|__|_________|------|----------> This is condition 3 second part.
|_____________|----------> This is condition 3, first part - DALU interlock
ED40
In this example, the second iteration before the last, the "x(r0)+,x0"
doesn’t happen. On the first iteration before the last, the X0 register
is fixed with the "x(r0)+,x0", but the "tfr x0,a" gets the wrong value
from the previous iteration’s X0. Thus, at the last iteration the A
register is fixed with "tfr x0,a", but the "a,y0" transfers the wrong
value from the previous iteration’s A register to Y0.
Workaround:
1. Use the DO instruction instead; mask any necessary interrupts
before the DO.
2. Run the REP instructions from internal memory.
3. Don’t make DALU interlocks in the repeated instruction. After
the repeat make the move. In the example above, all the "move
a,y0" are redundant so it can be done in the next instruction:
rep #number
tfr x0,a
x(r0)+,x0
move a,y0
If no interrupts before the move is a must, mask the interrupts
before the REP.
Pertains to: DSP56300 Family Manual, Rev. 2, Section A.3,
“Instruction Sequence Restrictions.”
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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ng 12/19/02 pg. 18
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
2K30A
Description (added on 3/22/2000)
Freescale Semiconductor, Inc...
ED42
The DMA End-of-Block-Transfer interrupt cannot be used if DMA is
operating in the mode in which DE is not cleared at the end of the block
transfer (DTM = 100 or 101).
Pertains to:
DSP56300 Family Manual, Rev. 2, Section 10.4.1.2, “End-of-BlockTransfer Interrupt.” Also, Section 10.5.3.5, “DMA Control Registers
(DCR[5–0],” discussion of bits 21 – 19 (DTM bits).
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
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ng 12/19/02 pg. 19
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
Description (added 12/10/2001):
2K30A
The following sequence gives erroneous results:
Freescale Semiconductor, Inc...
1) A different slave on the bus terminates a transaction (for
example, assertion of "stop" ).
2) Immediately afterwards (no more than one PCI clock), the chip’s
memory space control/status register at PCI address ADDR is read
in a single-word transaction. In this transaction, the chip drives to
the bus the data corresponding to the register at PCI address
ADDR+4, instead of the requested ADDR.
NOTE: ADDR is the PCI address of one of the following registers:
HCTR (ADDR=$10) , HSTR (ADDR=$14), or HCVR (ADDR=$18),
and not the data register.
ED46
Workaround:
The user should find a way to set/clear at least one bit in the control/status
registers to clearly differentiate between them. For example, you can set
HNMI in the HCVR, as this bit will always be 0 in the HSTR. If NMI
cannot be used, then HCVR{HV4,HV3,HV2} and
HSTR{HF5,HF4,HF3} can be set in any combinations that distinguish
between HCVR and HSTR data reads.
Pertains to:
DSP56301 User’s Manual: Put this errata text as a note in the description
of the HCTR (p.
6-48), the HSTR (p. 6-57), and the HCVR (p. 6-59). These page numbers
are for Revision 3 of the manual.
DSP56305 User’s Manual: Put this errata text as a note in the description
of the HCTR (p. 6-54), the HSTR (p. 6-68), and the HCVR (p. 6-72).
These page numbers are for Revision 1of the manual.
2K30A
Description: (added 6/14/2002)
ED49
DSP56301 Errata
1996-2002, Motorola
The 5V tolerant pins of the PCI bus do not meet the leakage requirement
of the 5V PCI specification when configured as inputs. When connected
with pull-up resistors to the 5V supply, the pin voltage value will not reach
the supply value, but will reach the Vih value defined by the spec. This
does not have an impact on 3V PCI compliance.
301CE2K30A_0_8
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ng 12/19/02 pg. 20
Freescale Semiconductor, Inc.
Chip Errata
DSP56301 Digital Signal Processor
Mask:2K30A
Errata
Number
Applies
to Mask
Document Update
2K30A
Description (added 12/19/2002):
The BSDL file does not correctly reflect the 24-bit port A portion of the
BSR. According to the BSDL file, the directional control of these bits is
split into two even groups of 12, each group controlled by a single control
cell. However, in order to work correctly, these two control bits should
always be programmed with the same value in order to control all 24 bits
of port A as a unique grouping.
Freescale Semiconductor, Inc...
ED51
Motorola and
are registered trademarks of Motorola, Inc.
OnCE is a trademark of Motorola, Inc.
NOTES
1. An over-bar (i.e., xxxx) indicates an active-low signal.
2. The letters seen to the right of the errata tell which DSP56301 mask numbers apply.
3. The Motorola DSP website has additional documentation updates that can be accessed at the
following URL:
http://www.motorola-dsp.com/
4. Information contained in the addendum to the DSP56301 data sheet applies to all members
of the DSP56300 core family, as appropriate (i.e, references to the HI32 port do not apply to
the DSP56302 and DSP56303).
-end-
DSP56301 Errata
1996-2002, Motorola
301CE2K30A_0_8
For More
Information On This Product,
Go to: www.freescale.com
ng 12/19/02 pg. 21