
Advance Information
MMC2114 MMC2113 MMC2112 — Rev. 1.0
410
Serial Peripheral Interface Module (SPI)
MOTOROLA
Serial Peripheral Interface Module (SPI)
18.7.6 SPI Pullup and Reduced Drive Register
Read: Anytime
Write: Anytime; writing to unimplemented bits has no effect
RSVD5 and RSVD1 — Reserved
Writing to these read/write bits updates their values but has no effect
on functionality.
RDPSP — SPI Port Reduced Drive Control Bit
1 = Reduced drive capability on SPIPORT bits [7:4]
0 = Full drive enabled on SPIPORT bits [7:4]
PUPSP — SPI Port Pullup Enable Bit
1 = Pullup devices enabled for SPIPORT bits [3:0]
0 = Pullup devices disabled for SPIPORT bits [3:0]
Address: 0x00cb_0006
Bit 7
654321
Bit 0
Read:
0
RSVD5
RDPSP
00
RSVD1
PUPSP
Write:
Reset:
00000000
= Writes have no effect and the access terminates without a transfer error exception.
Figure 18-7. SPI Pullup and Reduced Drive Register (SPIPURD)