Background Debug Module (S12SBDMV1)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
173
5.3.2.1
BDM Status Register (BDMSTS)
Figure 5-3. BDM Status Register
(
BDMSTS)
Read: All modes through BDM operation when not secured
Write: All modes through BDM operation when not secured, but subject to the following:
— ENBDM should only be set via a BDM hardware command if the BDM firmware commands
are needed. (This does not apply in special single chip mode).
— BDMACT can only be set by BDM hardware upon entry into BDM. It can only be cleared by
the standard BDM firmware lookup table upon exit from BDM active mode.
0x3_FF09
Reserved
R
0
0
0
0
0
0
0
0
W
0x3_FF0A
Reserved
R
0
0
0
0
0
0
0
0
W
0x3_FF0B
Reserved
R
0
0
0
0
0
0
0
0
W
Register Global Address 0x3_FF01
7
6
5
4
3
2
1
0
R
0
0
0
W
Reset
Special Single-Chip Mode
0
1
1
ENBDM is read as 1 by a debugging environment in special single chip mode when the device is not secured or secured but
fully erased (Flash). This is because the ENBDM bit is set by the standard BDM firmware before a BDM command can be fully
transmitted and executed.
1
0
0
0
0
0
2
2
UNSEC is read as 1 by a debugging environment in special single chip mode when the device is secured and fully erased,
else it is 0 and can only be read if not secure (see also bit description).
0
All Other Modes
0
0
0
0
0
0
0
0
= Unimplemented, Reserved
= Implemented (do not alter)
0
= Always read zero
Global
Address
Register
Name
Bit 7
6
5
4
3
2
1
Bit 0
= Unimplemented, Reserved
= Implemented (do not alter)
X
= Indeterminate
0
= Always read zero
Figure 5-2. BDM Register Summary (continued)
Summary of Contents for MC9S12VRP64
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Page 46: ...Device Overview S12VRP Series MC9S12VRP Family Reference Manual Rev 1 3 46 NXP Semiconductors ...
Page 236: ...S12S Debug Module S12DBGV2 MC9S12VRP Family Reference Manual Rev 1 3 236 NXP Semiconductors ...
Page 244: ...Interrupt Module S12SINTV1 MC9S12VRP Family Reference Manual Rev 1 3 244 NXP Semiconductors ...
Page 358: ...Timer Module TIM16B2CV3 MC9S12VRP Family Reference Manual Rev 1 3 358 NXP Semiconductors ...
Page 436: ...Supply Voltage Sensor BATSV2 MC9S12VRP Family Reference Manual Rev 1 3 436 NXP Semiconductors ...
Page 528: ...NVM Electrical Parameters MC9S12VRP Family Reference Manual Rev 1 3 528 NXP Semiconductors ...
Page 530: ...Package Information MC9S12VRP Family Reference Manual Rev 1 3 530 NXP Semiconductors ...
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