mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 189

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

6.3.1.1
All module level switches and flags are located in the module control register
Read: Anytime
Write: Anytime
Freescale Semiconductor
Reset
XGDBGM
XGFRZM
XGSSM
XGEM
Field
W
R
15
14
13
12
XGEM
15
0
0
XGE Mask — This bit controls the write access to the XGE bit. The XGE bit can only be set or cleared if a "1" is
written to the XGEM bit in the same register access.
Read:
Write:
0 Disable write access to the XGE in the same bus cycle
1 Enable write access to the XGE in the same bus cycle
XGFRZ Mask — This bit controls the write access to the XGFRZ bit. The XGFRZ bit can only be set or cleared
if a "1" is written to the XGFRZM bit in the same register access.
Read:
Write:
0 Disable write access to the XGFRZ in the same bus cycle
1 Enable write access to the XGFRZ in the same bus cycle
XGDBG Mask — This bit controls the write access to the XGDBG bit. The XGDBG bit can only be set or cleared
if a "1" is written to the XGDBGM bit in the same register access.
Read:
Write:
0 Disable write access to the XGDBG in the same bus cycle
1 Enable write access to the XGDBG in the same bus cycle
XGSS Mask — This bit controls the write access to the XGSS bit. The XGSS bit can only be set or cleared if a
"1" is written to the XGSSM bit in the same register access.
Read:
Write:
0 Disable write access to the XGSS in the same bus cycle
1 Enable write access to the XGSS in the same bus cycle
FRZM
XGATE Control Register (XGMCTL)
XG
14
0
0
This bit will always read "0".
This bit will always read "0".
This bit will always read "0".
This bit will always read "0".
= Unimplemented or Reserved
DBGM
XG
13
0
0
SSM
XG
12
Table 6-1. XGMCTL Field Descriptions (Sheet 1 of 3)
0
0
Figure 6-3. XGATE Control Register (XGMCTL)
FACTM
XG
11
0
0
MC9S12XDP512 Data Sheet, Rev. 2.17
10
0
0
SWEIFM
XG
0
0
9
XGIEM
0
0
8
Description
XGE XGFRZ XGDBG XGSS XGFACT
7
0
0
6
0
5
0
4
Figure
Chapter 6 XGATE (S12XGATEV2)
0
3
6-3.
2
0
0
SWEIF
XG
0
1
XGIE
0
0
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