mc9s12xf512 Freescale Semiconductor, Inc, mc9s12xf512 Datasheet - Page 870

• Manufacturer Part Number: mc9s12xf512
• Description: S12x Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1. Read: Anytime.
1. Read: Always reads 0x00
Chapter 19 Port Integration Module (S12XFPIMV2)
19.3.35 Port S Wired-Or Mode Register (WOMS)
19.3.36 PIM Reserved Register
870
Address 0x024E
Address 0x024F
Write: Anytime.
WOMS
Write: Unimplemented
Field
Reset
Reset
7-0
W
W
R
R
Port S wired-or mode—Enable wired-or functionality
This register configures the output pins as wired-or. If enabled the output is driven active low only (open-drain). A
logic level of “1” is not driven.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.
WOMS7
0
0
0
7
7
= Unimplemented or Reserved
WOMS6
0
0
0
6
6
Figure 19-33. Port S Wired-Or Mode Register (WOMS)
Table 19-32. WOMS Register Field Descriptions
MC9S12XF - Family Reference Manual, Rev.1.19
Figure 19-34. PIM Reserved Register
WOMS5
0
0
0
5
5
WOMS4
0
0
0
4
4
Description
u = Unaffected by reset
WOMS3
3
0
3
0
0
WOMS2
0
0
0
2
2
Access: User read/write
WOMS1
Freescale Semiconductor
0
0
0
1
1
Access: User read
WOMS0
0
0
0
0
0
(1)
(1)