MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 411

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

18.7.7 SPI Port Data Register
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
SPIPURD
Register
Pullup Enable Control
PUPSP
Pin function:
Bit
Address: 0x00cb_0007
Reset:
Read:
Write:
Read: Anytime
Write: Anytime
RSVD[7:4] — Reserved
PORTSP[3:0] — SPI Port Data Bits
Writing to these read/write bits updates their values but has no effect
on functionality.
Data written to SPIPORT drives pins only when they are configured
as general-purpose outputs.
Reading an input (DDRSP bit clear) returns the pin level; reading an
output (DDRSP bit set) returns the pin driver input level.
Writing to any of the PORTSP[3:0] pins does not change the pin state
when the pin is configured for SPI output.
SPIPORT I/O function depends upon the state of the SPE bit in
SPICR1 and the state the DDRSP bits in SPIDDR.
Freescale Semiconductor, Inc.
Reset
State
For More Information On This Product,
RSVD7
0
Bit 7
0
Serial Peripheral Interface Module (SPI)
Figure 18-8. SPI Port Data Register (SPIPORT)
Table 18-6. SPI Port Summary
SPIPURD
Register
Go to: www.freescale.com
RSVD6
6
0
Reduced Drive Control
RDPSP[1:0]
RSVD5
5
0
Bit
RSVD4
4
0
Full drive
Reset
State
Serial Peripheral Interface Module (SPI)
PORTSP3 PORTSP2 PORTSP1 PORTSP0
SS
3
0
Register
SPICR1
Memory Map and Registers
SCK
Mode Control
2
0
Wired-OR
SWOM
Advance Information
Bit
MOSI/
MOMI
0
1
Normal
Reset
State
MISO/
SISO
Bit 0
0
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