174
SLAS826F – MARCH 2015 – REVISED MARCH 2017
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Detailed Description
Copyright © 2015–2017, Texas Instruments Incorporated
(1)
X = don't care
(2)
Setting PJSEL1.3 = 0 and PJSEL0.3 = 1 causes the general-purpose I/O to be disabled. When HFXTBYPASS = 0, PJ.2 and PJ.3 are
configured for crystal operation and PJSEL1.2 and PJSEL0.2 are do not care. When HFXTBYPASS = 1, PJ.3 is configured for bypass
operation and PJ.2 is configured as general-purpose I/O.
(3)
When PJ.3 is configured in bypass mode, PJ.2 is configured as general-purpose I/O.
(4)
With PJSEL0.2 = 1 or PJSEL1.2 =1 the general-purpose I/O functionality is disabled. No input function is available. When configured as
output, the pin is actively pulled to zero.
Table 6-82. Port PJ (PJ.2 and PJ.3) Pin Functions
PIN NAME (PJ.x)
x
FUNCTION
CONTROL BITS OR SIGNALS
(1)
PJDIR.x
PJSEL1.2
PJSEL0.2
PJSEL1.3
PJSEL0.3
HFXT
BYPASS
PJ.3/HFXIN
3
PJ.3 (I/O)
I: 0; O: 1
X
X
0
0
X
N/A
0
X
X
1
X
X
DVSS
1
HFXIN crystal mode
(2)
X
X
X
0
1
0
HFXIN bypass mode
(2)
X
X
X
0
1
1
PJ.2/HFXOUT
2
PJ.2 (I/O)
I: 0; O: 1
0
0
0
0
0
1
X
X
X
1
(3)
N/A
0
see
(4)
see
(4)
0
0
0
1
X
X
X
1
(3)
DVSS
1
see
(4)
see
(4)
0
0
0
1
X
X
X
1
(3)
HFXOUT crystal mode
(2)
X
X
X
0
1
0