Signal Descriptions
MCF52110 ColdFire® Integrated Microcontroller Reference Manual, Rev. 1
2-10
Freescale Semiconductor
Preliminary
2.12 ADC Signals
describes the signals of the analog-to-digital converter.
2.13 General Purpose Timer Signals
describes the general purpose timer signals.
2.14 Pulse-Width Modulator Signals
describes the PWM signals.
2.15 Debug Support Signals
The signals in
are used as the interface to the on-chip JTAG controller and also to interface to
the BDM logic.
Table 2-11. ADC Signals
Signal Name
Abbreviation
Function
I/O
Analog Inputs
AN[7:0]
Inputs to the ADC.
I
Analog Reference
V
RH
Reference voltage high and low inputs.
I
V
RL
I
Analog Supply
V
DDA
Isolate the ADC circuitry from power supply noise
—
V
SSA
—
Table 2-12. GPT Signals
Signal Name
Abbreviation
Function
I/O
General Purpose Timer
Input/Output
GPT[3:0]
Inputs to or outputs from the general purpose timer module
I/O
Table 2-13. PWM Signals
Signal Name
Abbreviation
Function
I/O
PWM Output Channels
PWM[7:0]
Pulse-width modulated output for PWM channels
O
Table 2-14. Debug Support Signals
Signal Name
Abbreviation
Function
I/O
JTAG Enable
JTAG_EN
Select between debug module and JTAG signals at reset
I
Test Reset
TRST
This active-low signal is used to initialize the JTAG logic
asynchronously.
I
Test Clock
TCLK
Used to synchronize the JTAG logic.
I
Test Mode Select
TMS
Used to sequence the JTAG state machine. TMS is sampled on the
rising edge of TCLK.
I
