XC2200 Derivatives
System Units (Vol. 1 of 2)
Startup Configuration and Bootstrap Loading
User’s Manual
10-13
V2.1, 2008-08
SCFG/BSL, V1.3
10.5.1
Specific Settings
When the XC2200 has entered External Start mode, the configuration is automatically
set: according to
and
.
Note, that the startup procedure does not configure any address window within
ADDRSELx registers. Therefore, even if some CS signal is configured (refer to
and
), the startup procedure only makes the proper settings to
assure the adequate pin-functionality in regard to the selected EBC mode. The user
software must take care:
•
to configure the address window (in ADDRSELx register) for the CSx pin(s) which
will be used;
•
to enable those pins by setting FCONCSx.ENCS.
Table 10-6
External start mode-Specific State in EBC Registers
Configuration
at P10[10:8]
EBCMOD0
[15:8]
EBCMOD1
FCONCSx
1)
1) Which FCONCSx registers are affected is dependant on the configuration at P10[14:13] as follows:
11
B
or 01
B
- FCONCS0 is affected
10
B
- FCONCS0 and FCONCS1 are affected
00
B
- FCONCS0..FCONCS4 are affected
The other (unaffected) FCONCS registers retain their default values - refer to
.
Comment (EBC Mode)
000
B
30
H
001F
H
0011
H
8-Bit Multiplexed
001
B
70
H
0020
H
0001
H
8-Bit Demultiplexed
010
B
40
H
0000
H
0031
H
16-Bit MUX, BHE
011
B
48
H
0000
H
0031
H
16-Bit MUX, WRH
100
B
60
H
0000
H
0021
H
16-Bit DeMUX, BHE, A0
101
B
61
H
0000
H
0021
H
16-Bit DeMUX, WRH, A0
110
B
60
H
0010
H
0021
H
16-Bit DeMUX, BHE, A1
111
B
61
H
0010
H
0021
H
16-Bit DeMUX, WRH, A1
Table 10-7
External start mode-Specific State in EBCMOD0[7:0]
Configuration
at P10[14:13]
Configuration at P10[12:11]
00
B
(0 Segm.)
01
B
(2 Segm.)
10
B
(4 Segm.)
11
B
(8 Segm.)
00
B
(5 CS)
50
H
52
H
54
H
58
H
01
B
(1 CS)
10
H
12
H
14
H
18
H
10
B
(2 CS)
20
H
22
H
24
H
28
H
11
B
(0 CS)
00
H
02
H
04
H
08
H
