DSP56303 FREESCALE [Freescale Semiconductor, Inc], DSP56303 Datasheet - Page 255

• Manufacturer Part Number: DSP56303
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Freescale Semiconductor
Application:
23
*
0
Operating Mode Register
Reset = $00030X; X = latched from levels on Mode pins
Address Trace Enable, Bit 15
0 = Address Trace mode disabled
1 = Address Trace mode enabled
Stack Extension X Y Select, Bit 16
0 = Mapped to X memory
1 = Mapped to Y memory
Stack Extension Underflow Flag, Bit 17
0 = No stack underflow
1 = Stack underflow
Stack Extension Wrap Flag, Bit 19
0 = No stack extension wrap
1 = Stack extension wrap (sticky bit)
Stack Extension Enable, Bit 20
0 = Stack extension disabled
1 = Stack extension enabled
Stack Extension Overflow Flag, Bit 18
0 = No stack overflow
1 = Stack overflow
Asynchronous Bus Arbitration Enable, Bit 13
Central Processor
Address Attribute Priority Disable, Bit 14
0 = Synchronization disabled
1 = Synchronization enabled
0 = Priority mechanism enabled
1 = Priority mechanism disabled
22
*
0
21 20
*
0
SEN
WRP EOV
19 18 17 16
Figure B-2. Operating Mode Register (OMR)
EUN
XYS
DSP56303 User’s Manual, Rev. 2
15 14 13 12 11 10 9
ATE
APD ABE
Bus Release Timing, Bit 12
0 = Fast Bus Release mode
1 = Slow Bus Release mode
BRT TAS
Cache Burst Mode Enable, Bit 10
0 = Burst Mode disabled
1 = Burst Mode enabled
BE
TA Synchronize Select, Bit 11
0 = Not synchronized
1 = Synchronized
CPD1
CPD[1:0]
Core-DMA Priority, Bits 9–8
00
01
10
11
CPD0
1 = Memory switching enabled
Memory Switch Mode, Bit 7
0 = Memory switching disabled
8
Stop Delay Mode, Bit 6
0 = Delay is 128K clock cycles
1 = Delay is 16 clock cycles
MS
7
Compare SR[CP] to
active DMA channel
priority
DMA has higher
priority than core
DMA has same
priority as core
DMA has lower
priority than core
*
Date:
Programmer:
External Bus Disable, Bit 4
Chip Operating Mode, Bits 3–0
0 = Enables external bus
1 = Disables external bus
Refer to the operating modes
table in Chapter 4.
SD
6
= Reserved, Program as 0
Description
*
0
5
EBD
4
MD
3
Programming Sheets
Sheet 2 of 2
MC MB
2
1
MA
0
B-11