
24.0.5.55 Port J Polarity Select Register (PPSJ)
Read: Anytime.
Write: Anytime.
This register serves a dual purpose by selecting the polarity of the active interrupt edge as well as
selecting a pull-up or pull-down device if enabled.
24.0.5.56 Port J Interrupt Enable Register (PIEJ)
This register disables or enables on a per-pin basis the edge sensitive external interrupt associated
with Port J.
Table 24-50. PERJ Field Descriptions
Field
Description
7–0
PERJ[7:6]
PERJ[1:0]
Pull Device Enable Port J
0 Pull-up or pull-down device is disabled.
1 Either a pull-up or pull-down device is enabled.
76543210
R
PPSJ7
PPSJ6
0000
PPSJ1
PPSJ0
W
Reset
00000000
= Unimplemented or Reserved
Figure 24-57. Port J Polarity Select Register (PPSJ)
Table 24-51. PPSJ Field Descriptions
Field
Description
7–0
PPSJ[7:6]
PPSJ[1:0]
Polarity Select Port J
0
Falling edge on the associated port J pin sets the associated ag bit in the PIFJ register.
A pull-up device is connected to the associated port J pin, if enabled by the associated bit in register PERJ
and if the port is used as general purpose input or as IIC port.
1
Rising edge on the associated port J pin sets the associated ag bit in the PIFJ register.
A pull-down device is connected to the associated port J pin, if enabled by the associated bit in register PERJ
and if the port is used as input.
76543210
R
PIEJ7
PIEJ6
0000
PIEJ1
PIEJ0
W
Reset
00000000
= Unimplemented or Reserved
Figure 24-58. Port J Interrupt Enable Register (PIEJ)