MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 261
MC9S12G
Manufacturer Part Number
MC9S12G
Description
Ignores external trigger. Performs one conversion sequence and stops.
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12G.pdf
(1160 pages)
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Register Global Address 0x3_FF06
Read: All modes through BDM operation when not secured
Write: All modes through BDM operation when not secured
When entering background debug mode, the BDM CCR holding register is used to save the condition code
register of the user’s program. It is also used for temporary storage in the standard BDM firmware mode.
The BDM CCR holding register can be written to modify the CCR value.
7.3.2.2
Register Global Address 0x3_FF08
Read: All modes through BDM operation when not secured
Write: All modes through BDM operation when not secured
Freescale Semiconductor
Special Single-Chip Mode
BPP[3:0]
Reset
BPAE
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
Field
3–0
7
W
R
All Other Modes
BPAE
BDM Program Page Access Enable Bit — BPAE enables program page access for BDM hardware and
firmware read/write instructions The BDM hardware commands used to access the BDM registers (READ_BD
and WRITE_BD) can not be used for program page accesses even if the BPAE bit is set.
0 BDM Program Paging disabled
1 BDM Program Paging enabled
BDM Program Page Index Bits 3–0 — These bits define the selected program page. For more detailed
information regarding the program page window scheme, please refer to the S12S_MMC Block Guide.
BDM Program Page Index Register (BDMPPR)
7
0
When BDM is made active, the CPU stores the content of its CCR register
in the BDMCCR register. However, out of special single-chip reset, the
BDMCCR is set to 0xD8 and not 0xD0 which is the reset value of the CCR
register in this CPU mode. Out of reset in all other modes the BDMCCR
register is read zero.
Reset
W
R
= Unimplemented, Reserved
CCR7
6
0
0
Figure 7-5. BDM Program Page Register (BDMPPR)
7
1
0
Figure 7-4. BDM CCR Holding Register (BDMCCR)
MC9S12G Family Reference Manual, Rev.1.01
Table 7-4. BDMPPR Field Descriptions
CCR6
1
0
6
5
0
0
CCR5
0
0
5
NOTE
4
0
0
Description
CCR4
0
0
4
BPP3
3
0
CCR3
3
1
0
Background Debug Module (S12SBDMV1)
BPP2
2
0
CCR2
0
0
2
BPP1
1
0
CCR1
0
0
1
BPP0
CCR0
0
0
0
0
0
261
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