TC1784
Micro Link Interface (MLI)
User´s Manual
22-145
V1.1, 2011-05
MLI, V2.0
22.5.11
Port Control and Connections
MLI0 and MLI1 clock and data output lines are connected to GPIO ports and are,
therefore, controlled in the port logics (see also
). The
following port control operations selections must be executed for these I/O lines:
•
Input/output function selection (IOCR registers)
•
Pad driver characteristics selection for the outputs (PDR registers)
22.5.11.1 Input/Output Function Selection
The port input/output control registers contain the bit fields that select the digital output
and input driver characteristics such as port direction (input/output) with alternate output
selection, pull-up/down devices, and open-drain selections. The I/O lines for the MLI
modules are controlled by the Port 1, Port 5 and Port 8 input/output control registers.
When the MLI modules are connected to the GPIO port lines, the correct settings of the
enable/polarity control bits and bit fields in the output input control registers MLI0_IOCR
and MLI1_IOCR must also be regarded (transmitter I/O line control see
,
receiver I/O line control see
). Note that after a reset operation the MLI0 and
MLI1 modules (although enabled) have no direct connections to the GPIO lines.
shows how OICR register bits and bit fields must be programmed for the
required GPIO functionality of the MLI I/O lines.
Table 22-14 MLI0 and MLI1 I/O Line Selection and Setup
Module
Port Lines
Input/Output Control
Register Bits
I/O
MLI0
P1.3 / TREADY0B
P1_IOCR0.PC3 = 0XXX
B
MLI0_OICR.TRE = 1
MLI0_OICR.TRP = X
MLI0_OICR.TRS = 01
B
Input
P1.4 / TCLK0
P1_IOCR4.PC4 = 1X01
B
MLI0_OICR.TCE = 1
MLI0_OICR.TCP = X
Output
P1.5 / TREADY0A
P1_IOCR4.PC5 = 0XXX
B
MLI0_OICR.TRE = 1
MLI0_OICR.TRP = X
MLI0_OICR.TRS = 00
B
Input
P1.6 / TVALID0A
P1_IOCR4.PC6 = 1X01
B
MLI0_OICR.TVEA = 1
MLI0_OICR.TVPA = X
Output
P1.7 / TDATA0
P1_IOCR4.PC7 = 1X01
B
MLI0_OICR.TDP = X
Output
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