MMC2107 Datasheet, PDF (346/618 Pages) –

Freescale Semiconductor, Inc.
Serial Communications Interface Modules (SCI1 and SCI2)
NOTE:
If the value of T8 is the same as in the previous transmission, T8 does
not have to be rewritten. The same value is transmitted until T8 is
rewritten.
When using the 8-bit data format, only SCIDRL needs to be accessed.
When using 8-bit write instructions to transmit 9-bit data, write first to
SCIDRH, then to SCIDRL.
16.7.7 SCI Pullup and Reduced Drive Register
Address: SCI1 — 0x00cc_0008
SCI2 — 0x00cd_0008
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
SCISDOZ
RSVD5 RDPSCI
Write:
0
RSVD1 PUPSCI
Reset: 0
0
0
0
0
0
0
0
= Writes have no effect and the access terminates without a transfer error exception.
Figure 16-10. SCI Pullup and Reduced Drive Register (SCIPURD)
Write: Anytime
SCISDOZ — SCI Stop in Doze Mode Bit
The SCISDOZ bit disables the SCI in doze mode.
1 = SCI disabled in doze mode
0 = SCI enabled in doze mode
RSVD[5:1] — Reserved
Writing to these read/write bits updates their values but has no effect
on functionality.
RDPSCI — Reduced Drive Bit
This read/write bit controls the drive capability of TXD and RXD.
1 = Reduced TXD and RXD pin drive
0 = Full TXD and RXD pin drive
Technical Data
346
Serial Communications Interface Modules (SCI1 and SCI2)
For More Information On This Product,
Go to: www.freescale.com
MMC2107 – Rev. 2.0
MOTOROLA