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TMS320UVC5402 数据表(PDF) 13 Page - Texas Instruments

部件名 TMS320UVC5402
功能描述  FIXED-POINT DIGITAL SIGNAL PROCESSOR
PDF  60 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TMS320UVC5402 数据表(HTML) 13 Page - Texas Instruments

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TMS320UVC5402
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS100A – APRIL 1999 – REVISED AUGUST 1999
13
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251–1443
software-programmable wait-state generator (continued)
Table 2. Software Wait-State Register (SWWSR) Bit Fields
BIT
RESET
FUNCTION
NO.
NAME
RESET
VALUE
FUNCTION
15
XPA
0
Extended program address control bit. XPA is used in conjunction with the program space fields
(bits 0 through 5) to select the address range for the program space wait states.
14–12
I/O
1
I/O space. The field value (0–7) corresponds to the base number of wait states for I/O space accesses
within addresses 0000–FFFFh. The SWSM bit of the SWCR defines a multiplication factor of 1 or 2 for
the base number of wait states.
11–9
Data
1
Upper data space. The field value (0–7) corresponds to the base number of wait states for external
data space accesses within addresses 8000–FFFFh. The SWSM bit of the SWCR defines a
multiplication factor of 1 or 2 for the base number of wait states.
8–6
Data
1
Lower data space. The field value (0–7) corresponds to the base number of wait states for external
data space accesses within addresses 0000–7FFFh. The SWSM bit of the SWCR defines a
multiplication factor of 1 or 2 for the base number of wait states.
5–3
Program
1
Upper program space. The field value (0–7) corresponds to the base number of wait states for external
program space accesses within the following addresses:
- XPA = 0: x8000 – xFFFFh
- XPA = 1: The upper program space bit field has no effect on wait states.
The SWSM bit of the SWCR defines a multiplication factor of 1 or 2 for the base number of wait
states.
2–0
Program
1
Program space. The field value (0–7) corresponds to the base number of wait states for external
program space accesses within the following addresses:
- XPA = 0: x0000–x7FFFh
- XPA = 1: 00000–FFFFFh
The SWSM bit of the SWCR defines a multiplication factor of 1 or 2 for the base number of wait
states.
The software wait-state multiplier bit of the software wait-state control register (SWCR) is used to extend the
base number of wait states selected by the SWWSR. The SWCR bit fields are shown in Figure 4 and described
in Table 3.
Reserved
1
15
R/W-0
SWSM
0
R/W-0
LEGEND: R = Read, W = Write
Figure 4. Software Wait-State Control Register (SWCR) [MMR Address 002Bh]
Table 3. Software Wait-State Control Register (SWCR) Bit Fields
BIT
RESET
FUNCTION
NO.
NAME
RESET
VALUE
FUNCTION
15–1
Reserved
0
These bits are reserved and are unaffected by writes.
0
SWSM
0
Software wait-state multiplier. Used to multiply the number of wait states defined in the SWWSR by a factor
of 1 or 2.
- SWSM = 0: wait-state base values are unchanged (multiplied by 1).
- SWSM = 1: wait-state base values are multiplied by 2 for a maximum of 14 wait states.



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