CONTROL_MODULE Registers
9.3.4 control_status Register (offset = 40h) [reset = 0h]
control_status is shown in
and described in
.
Figure 9-7. control_status Register
31
30
29
28
27
26
25
24
Reserved
R-0h
23
22
21
20
19
18
17
16
sysboot1
testmd
admux
waiten
bw
R/W-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
15
14
13
12
11
10
9
8
Reserved
devtype
R-0h
R-0h
7
6
5
4
3
2
1
0
sysboot0
R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 9-14. control_status Register Field Descriptions
Bit
Field
Type
Reset
Description
31-24
Reserved
R
0h
23-22
sysboot1
R/W
0h
Used to select crystal clock frequency.
See SYSBOOT Configuration Pins.
Reset value is from SYSBOOT[15:14].
21-20
testmd
R/W
0h
Set to 00b.
See SYSBOOT Configuration Pins for more information.
Reset value is from SYSBOOT[13:12].
19-18
admux
R/W
0h
GPMC CS0 Default Address Muxing
00: No Addr/Data Muxing
01: Addr/Addr/Data Muxing
10: Addr/Data Muxing
11: Reserved
Reset value is from SYSBOOT[11:10].
17
waiten
R/W
0h
GPMC CS0 Default Wait Enable
0: Ignore WAIT input
1: Use WAIT input
See SYSBOOT Configuration Pins for more information. Reset value
is from SYSBOOT[9].
16
bw
R/W
0h
GPMC CS0 Default Bus Width
0: 8-bit data bus
1: 16-bit data bus
See SYSBOOT Configuration Pins for more information. Reset value
is from SYSBOOT[8].
15-11
Reserved
R
0h
10-8
devtype
R
0h
000: Reserved
001: Reserved
010: Reserved
011: General Purpose (GP) Device
111: Reserved
7-0
sysboot0
R/W
0h
Selected boot mode.
See SYSBOOT Configuration Pins for more information.
Reset value is from SYSBOOT[7:0].
765
SPRUH73H – October 2011 – Revised April 2013
Control Module
Copyright © 2011–2013, Texas Instruments Incorporated