mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 404

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Port Control Registers
17.2.3 Port C Control Register
There is no port C control register. Port C is enabled only when the external data bus is 16
bits wide. This is done by holding QSPI_DOUT/WSEL high during reset. When
QSPI_DOUT/WSEL is low during reset, the external data bus is 32 bits wide and port C is
unavailable.
17.2.4 Port D Control Register (PDCNT)
PDCNT, shown in Table 17-8, is used to configure pins that have multiple functions but no
associated GPIO capability. Port D has no data register nor data direction register.
Table 17-7 describes PDCNT fields. Table 17-8 provides the same information organized
by function.
17-8
Reset
Reset
Field
Field
Addr
31–16
15–14
13–12
11–10
R/W
R/W
Bits
PDCNT7
31
15
PDCNT7
PDCNT6
PDCNT5
Name
14
–
PDCNT6
13
Figure 17-3. Port D Control Register (PDCNT)
Reserved
Configure pin K6.
00 High impedance
01 PWM_OUT2
10 TIN1
11 Reserved
Configure pin P5.
00 High impedance
01 PWM_OUT1
10 TOUT1
11 Reserved
Configure pin P2.
00 High impedance
01 Reserved
10 DIN3
11 INT4
12
Table 17-7. PDCNT Field Descriptions
PDCNT5
11
10
MCF5272 User’s Manual
0000_0000_0000_0000
PDCNT4
9
MBAR + 0x0098
Read/Write
8
–
–
–
PDCNT3
Description
7
6
PDCNT2
5
4
PDCNT1
3
2
MOTOROLA
PDCNT0
1
16
0