Strb0\ control register, Strb1\ control register – Texas Instruments TMS320C3x User Manual

Page 311

Configuration

10-8

10.3.1.1

STRB0 Control Register

The STRB0 control register (Figure 10–4) is a 32-bit register that contains the
control bits for the portion of the external bus memory space that is mapped to
STRB0. The following table lists the register bits with the bit names and functions.
At the system reset, 0F10F8h is written to the STRB0 control register if the PRGW
pin is logic low and 0710F8h is written to the STRB0 control register if the PRGW
pin is logic high.

Figure 10–4. STRB0 Control Register

БББББББ

31 28

ББББББ

27 24 23

БББ

ББББ

ББББББ

19 18

ББББББ

17 16

ББ

STRB
switch

STRB

config

Sign ext/

zero fill

Physical memory

width

Data type size

ББ

БББББББ

R/W

ББББББ

R/W

БББ

R/W

БББ

R/W

ББББ

R/W

ББББББ

R/W

ББББББ

R/W

ББ

ББББББ

15 13

ББББББ

12 11 8

ББББББББ

7 5

БББББ

4 3

БББ

ББББ

ББББББ

BNKCMP

ББББББББ

WTCNT

БББББ

SWW

БББ

HIZ

ББББ

NOHOLD

ББББ

HOLDST

ББББББ

R/W

ББББББББ

R/W

БББББ

R/W

БББ

R/W

ББББ

R/W

ББББ

Notes:

1) R = read, W = write

2) xx = reserved, read as 0

10.3.1.2

STRB1 Control Register

The STRB1 control register (Figure 10–5) is a 32-bit register that contains the
control bits for the portion of the external bus memory space that is mapped
to STRB1. Figure 10–5 shows the register bits with their names and functions.
At system reset, 0F10F8h is written to the STRB1 control register if the PRGW
pin is logic low and 0710F8h is written to the STRB1 control register if the
PRGW pin is logic high.

Figure 10–5. STRB1 Control Register

БББББ

31 24

БББ

23 21

ББББ

19 18

ББББ

17 16

ББББ

15 13

ББББ

12 8

ББББ

7 5

БББ

4 3

ББББ

2 0

Sign ext/

zero fill

Physical

memory

width

Data-

type

size

ББББ

ББ

ББББ

BNKCMP

ББББ

ББ

ББББ

WTCNT

БББ

SWW

БББББ

БББ

R/W

ББББ

R/W

ББББ

R/W

ББББ

R/W

ББББ

R/W

ББББ

R/W

БББ

R/W

ББББ

Notes:

1) R = read, W = write

2) xx = reserved, read as 0