PXD20RM Datasheet, PDF (1545/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Figure 46-16. Illustrative diagram of RSDS driver
46.5.5 Functionality and modes of operation:
Table 46-33. Modes of operation
modes
description
conditions
normal (asynch) data transmission (asynchronous) rsds_ref_en = ipp_obe =1.2,
normal (asynch
positive edge)
data transmission (asynchronous), rsds_ref_en = ipp_obe =1.2,
with positive data polarity.
ipp_data_polarity =0V
normal (asynch,
negative edge)
data transmission (asynchronous), rsds_ref_en = ipp_obe =1.2,
with negative data polarity.
ipp_data_polarity = 1.2V
Power down (ref)
rsds_ref is in power down.
rsds_ref_en = 0
Power down (driver) rsds_tx is in power down/disable. ipp_obe = 0
Table 46-34. Logic table for outputs
ipg_powseq_dr_off rsds_ref_en ipp_obe
ipp_do pad_p pad_n
1
X
0
0
0
1
X
X
Z
Z
X
X
X
X
0
X
Z
Z
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
46-37