MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 412

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Peripheral Interface Module (SPI)
18.7.8 SPI Port Data Direction Register
Advance Information
412
NOTE:
Pin function:
Address: 0x00cb_0008
Reset:
Read: Anytime
Write: Anytime
RSVD[7:4] — Reserved
DDRSP[3:0] — Data Direction Bits
When the SPI is enabled (SPE = 1), the MISO, MOSI, and SCK pins:
Read:
Write:
Writing to these read/write bits updates their values but has no effect
on functionality.
The DDRSP[3:0] bits control the data direction of SPIPORT pins.
Reset clears DDRSP[3:0].
In slave mode, DDRSP3 has no meaning or effect. In master mode,
the DDRSP3 and the SSOE bits determine whether SPI port pin 3 is
a mode-fault input, a general-purpose input, a general-purpose
output, or a slave-select output.
•
•
Freescale Semiconductor, Inc.
Figure 18-9. SPI Port Data Direction Register (SPIDDR)
For More Information On This Product,
1 = Corresponding pin configured as output
0 = Corresponding pin configured as input
Are inputs if their SPI functions are input functions regardless of
the state of their DDRSP bits.
Are outputs if their SPI functions are output functions only if their
DDRSP bits are set.
RSVD7
Serial Peripheral Interface Module (SPI)
Bit 7
0
Go to: www.freescale.com
RSVD6
6
0
RSVD5
5
0
RSVD4
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
4
0
DDRSP3
SS
3
0
DDRSP2
SCK
2
0
DDRSP1
MOSI/
MOMI
0
1
MOTOROLA
DDRSP0
MISO/
SISO
Bit 0
0