A - 326
DSP96002 USER’S MANUAL
MOTOROLA
A.9.13 Memory Access Timing Summary
Access
X Mem
Y Mem
P Mem
I/O
+ ax
+ ay
+ ap
+ aio
+ axy
Type Access
Access
Access
Access
Cycle
Cycle
Cycle
Cycle
Cycle
X:
Int
––
––
––
0
––
––
––
––
X:
Ext
––
––
––
wx
––
––
––
––
Y:
––
Int
––
––
––
0
––
––
––
Y:
––
Ext
––
––
––
wy
––
––
––
P:
––
––
Int
––
––
––
0
––
––
P:
––
––
Ext
––
––
––
wp
––
––
IO:
––
––
––
Int
––
––
––
0
––
IO:
––
––
––
Ext
––
––
––
wio
––
L: XY:
Int
Int
––
––
––
––
––
––
0
L: XY:
Int
Ext
––
––
––
––
––
––
wy
L: XY:
Ext
Int
––
––
––
––
––
––
wx
L: XY:
Ext
Ext
––
––
––
––
––
––
2+wx+wy
where
wx
= external X memory access wait states
wy
= external Y memory access wait states
wp
= external P memory access wait states
wio = external I/O memory access wait states
Figure A-20 Memory Access Timing Summary
A.10 INSTRUCTION SEQUENCE RESTRICTIONS
Due to the pipelined nature of the DSP core processor, there are certain instruction sequences that are
forbidden and will cause undefined operation. Most of these restricted sequences would cause contention
for an internal resource, such as the Stack Register.
The DSP assembler will flag these sequences as an assembly error. These restrictions are listed below.
A.10.1 Restrictions Near the End of DO Loops
Proper loop operation is guaranteed if no instruction starting at address LA-2, LA-1 or LA specifies the pro-
gram controller registers SR, SP, SSL, LA, LC or (implicitly) PC as a destination register; or specifies SSH
as a source or destination register.
Summary of Contents for DSP96002
Page 3: ...1 2 DSP96002 USER S MANUAL MOTOROLA ...
Page 38: ...MOTOROLA DSP96002 USER S MANUAL 3 15 Figure 3 4 Modulo Arithmetic Unit Block Diagram ...
Page 39: ...3 16 DSP96002 USER S MANUAL MOTOROLA ...
Page 53: ...4 14 DSP96002 USER S MANUAL MOTOROLA ...
Page 76: ...MOTOROLA DSP96002 USER S MANUAL 5 23 Figure 5 8 Address Modifier Summary ...
Page 86: ...6 10 DSP96002 USER S MANUAL MOTOROLA ...
Page 101: ...MOTOROLA DSP96002 USER S MANUAL 7 15 Figure 7 9 HI Block Diagram One Port ...
Page 140: ...7 54 DSP96002 USER S MANUAL MOTOROLA ...
Page 166: ...9 10 DSP96002 USER S MANUAL MOTOROLA ...
Page 181: ...MOTOROLA DSP96002 USER S MANUAL 10 15 Figure 10 8 Program Address Bus FIFO ...
Page 337: ...MOTOROLA DSP96002 USER S MANUAL A 149 ...
Page 404: ...A 216 DSP96002 USER S MANUAL MOTOROLA PC xxxx D ...
Page 460: ...A 272 DSP96002 USER S MANUAL MOTOROLA SIOP Not affected ...
Page 484: ...A 296 DSP96002 USER S MANUAL MOTOROLA SSH PC SSL SR SP 1 SP ...
Page 519: ...MOTOROLA DSP96002 USER S MANUAL A 331 ...
Page 718: ...MOTOROLA DSP96002 USER S MANUAL B 199 ...
Page 871: ... MOTOROLA INC 1994 MOTOROLA TECHNICAL DATA SEMICONDUCTOR M Addendum ...
Page 888: ...MOTOROLA INDEX 1 INDEX ...
Page 889: ......