Port Integration Module (S12VRPPIMV1)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
65
NOTE
For standalone usage of SCI0 on external pins set MODRR[2:0]=0b110 and
disable LINPHY (LPCR[LPE]=0). This releases the LINPHY associated
pins to other shared functions.
2.3.2.4
Port E, BKGD pin Pull Control Register (PUCR)
100
Probe setting:
SCI0 connects to LINPHY, interface accessible on 2 external pins
110
Conformance test setting:
Interface opened and all 4 signals routed externally
Address 0x000C
Access: User read/write
1
1
Read:Anytime
Write:Anytime, except BKPUE, which is writable in special mode only
7
6
5
4
3
2
1
0
R
0
BKPUE
0
PDPEE
0
0
0
0
W
Reset
0
1
0
1
0
0
0
0
Figure 2-5. Port E, BKGD pin Pull Control Register (PUCR)
Table 2-15. PUCR Register Field Descriptions
Field
Description
6
BKPUE
BKGD pin Pullup Enable
— Activate pullup device on pin
This bit configures whether a pull-up device is activated, if the pin is used as input. If a pin is used as output this bit
has no effect.
1 Pullup device enabled
0 Pullup device disabled
4
PDPEE
Pull-Down Port E Enable — Activate pulldown devices on all port input pins
This bit configures whether a pulldown device is activated on all associated port input pins. If a pin is used as output
or used with the CPMU OSC function this bit has no effect. Out of reset the pulldown devices are enabled.
1 Pullup devices enabled
0 Pullup devices disabled
MODRR2[2:0]
Description
Summary of Contents for MC9S12VRP64
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