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Chapter 2 Port Integration Module (S12ZVMPIMV1)
MC9S12ZVM Family Reference Manual Rev. 1.3
108
Freescale Semiconductor
2.3.3.10
Wired-Or Mode Register
This is a generic description of the standard wired-or registers. Refer to
implemented bits in the respective register. Unimplemented bits read zero.
2.3.3.11
PIM Reserved Register
Table 2-17. Reduced Drive Register Field Descriptions
Field
Description
7-0
RDRx7-0
Reduced Drive Register — Select reduced drive for output pin
This bit configures the drive strength of the associated output pin as either full or reduced. If a pin is used as input
this bit has no effect. The reduced drive function is independent of which function is being used on a particular pin.
1 Reduced drive selected (approx. 1/10 of the full drive strength)
0 Full drive strength enabled
Address 0x02DF WOMS
Access: User read/write
(1)
1. Read: Anytime
Write: Anytime
7
6
5
4
3
2
1
0
R
WOMx7
WOMx6
WOMx5
WOMx4
WOMx3
WOMx2
WOMx1
WOMx0
W
Reset
0
0
0
0
0
0
0
0
Figure 2-19. Wired-Or Mode Register
Table 2-18. Wired-Or Mode Register Field Descriptions
Field
Description
7-0
WOMx7-0
Wired-Or Mode — Enable open-drain output
This bit configures the output buffer as wired-or. If enabled the output is driven active low only (open-drain) while the
active high drive is turned off. This allows a multipoint connection of several serial modules. These bits have no
influence on pins used as inputs.
1 Output buffers operate as open-drain outputs
0 Output buffers operate as push-pull outputs
Address (any reserved)
Access: User read
(1)
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
Figure 2-20. PIM Reserved Register
Содержание MC9S12ZVM series
Страница 116: ...Chapter 2 Port Integration Module S12ZVMPIMV1 MC9S12ZVM Family Reference Manual Rev 1 3 116 Freescale Semiconductor ...
Страница 242: ...Chapter 7 ECC Generation Module SRAM_ECCV1 MC9S12ZVM Family Reference Manual Rev 1 3 242 Freescale Semiconductor ...
Страница 384: ...Chapter 10 Supply Voltage Sensor BATSV3 MC9S12ZVM Family Reference Manual Rev 1 3 384 Freescale Semiconductor ...
Страница 484: ...Chapter 13 Programmable Trigger Unit PTUV2 MC9S12ZVM Family Reference Manual Rev 1 3 484 Freescale Semiconductor ...
Страница 662: ...Chapter 17 Gate Drive Unit GDUV4 MC9S12ZVM Family Reference Manual Rev 1 3 662 Freescale Semiconductor ...
Страница 684: ...Chapter 18 LIN Physical Layer S12LINPHYV2 MC9S12ZVM Family Reference Manual Rev 1 3 684 Freescale Semiconductor ...
Страница 740: ...Chapter 19 128 KB Flash Module S12ZFTMRZ128K512V2 MC9S12ZVM Family Reference Manual Rev 1 3 740 Freescale Semiconductor ...
Страница 756: ...Appendix A MCU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 756 Freescale Semiconductor ...
Страница 772: ...Appendix D LINPHY Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 772 Freescale Semiconductor ...
Страница 776: ...Appendix E GDU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 776 Freescale Semiconductor ...
Страница 788: ...Appendix I MSCAN Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 788 Freescale Semiconductor ...
Страница 790: ...Appendix J Package Information MC9S12ZVM Family Reference Manual Rev 1 3 790 Freescale Semiconductor ...