DSP56309EVM Freescale Semiconductor, DSP56309EVM Datasheet - Page 248

• Manufacturer Part Number: DSP56309EVM
• Description: KIT EVALUATION FOR XC56309
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of DSP56309EVM

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Description/function: Audio DSPs
• Product: Audio Modules
• For Use With/related Products: DSP56309
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Programming Reference
B-14
Application:
Bus Control Register (BCR)
Reset = $1FFFFF
BRH
NOTE: All BCR bits are read/write control bits.
23 22 21 20
Bus Request Hold, Bit 23
0 = BR pin is asserted only for attempted
1 = BR pin is always asserted
Bus Interface Unit
or pending access
*
0
BBS
Bus State, Bit 21
0 = DSP is not bus master
1 = DSP is bus master
19 18 17 16
BDFW[4–0]
Figure B-5. Bus Control Register (BCR)
15 14 13 12 11 10 9
DSP56309 User’s Manual, Rev. 1
BA3W[2–0]
X:$FFFFFB Read/Write
BA2W[2–0]
8
BA1W[4–0]
Default Area Wait Control, Bits 20–16
Area 3 Wait Control, Bits 15–13
Area 2 Wait Control, Bits 12–10
Area 0 Wait Control, Bits 4– 0
These read/write control bits define
the number of wait states inserted
into each external SRAM access to
the designated area. The value of
these bits should not be programmed
as zero.
Area 1 Wait Control, Bits 9–5
7
20–16
15–13
12–10
Bits
*
9–5
4–0
Date:
Programmer:
6
= Reserved, Program as 0
5
BDFW[4–0]
BA3W[2–0]
BA2W[2–0]
BA1W[4–0]
BA0W[4–0]
Bit Name
4
3
Freescale Semiconductor
BA0W[4–0]
# of Wait States
Sheet 1 of 2
2
0–31
0–31
0–31
0–7
0–7
1
0