CP3BT23_14 Datasheet, PDF (265/324 Pages) Texas Instruments – CP3BT23 Reprogrammable Connectivity Processor with Bluetooth and Dual CAN Interfaces

CP3BT23
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SNOSCX3A – JULY 2013 – REVISED JANUARY 2014
26.1.6 ISE Mode Operation
The VTU supports breakpoint operation of the In-SystemEmulator (ISE). If FREEZE is asserted, all timer
counter clocks will be inhibited and the current value of the timer registers will be frozen; in capture mode,
all further capture events are disabled. Once FREEZE becomes inactive, counting will resume from the
previous value and the capture input events are re-enabled.
Table 26-1. VTU Interrupt Sources
Pending Flag
IxAPD
IxBPD
IxCPD
IxDPD
Dual 8-bit PWM Mode
Low Byte Duty Cycle match
Low Byte Period match
High Byte Duty Cycle match
High Byte Period match
16-bit PWM Mode
Duty Cycle match
Period match
N/A
N/A
Capture Mode
Capture to PERCAPx
Capture to DTYCAPx
Counter Overflow
N/A
26.2 VTU REGISTERS
The VTU contains a total of 19 user accessible registers, as listed in Table 26-2. All registers are word-
wide and are initialized to a known value upon reset. All software accesses to the VTU registers must be
word accesses.
Name
MODE
IO1CTL
IO2CTL
INTCTL
INTPND
CLK1PS
CLK2PS
COUNT
PERCAP
DTYCAP
COUNT2
PERCAP2
DTYCAP2
COUNT3
PERCAP3
DTYCAP3
COUNT4
PERCAP4
DTYCAP4
Table 26-2. VTU Registers
Address
FF FF80h
FF FF82h
FF FF84h
FF FF86h
FF FF88h
FF FF8Ah
FF FF98h
FF FF8Ch
FF FF8Eh
FF FF90h
FF FF92h
FF FF94h
FF FF96h
FF FF9Ah
FF FF9Ch
FF FF9Eh
FF FFA0h
FF FFA2h
FF FFA4h
Description
Mode Control Register
I/O Control Register 1
I/O Control Register 2
Interrupt Control Register
Interrupt Pending Register
Clock Prescaler Register 1
Clock Prescaler Register 2
Counter 1 Register
Period/Capture 1 Register
Duty Cycle/Capture 1 Register
Counter 2 Register
Period/Capture 2 Register
Duty Cycle/Capture 2 Register
Counter 3 Register
Period/Capture 3 Register
Duty Cycle/Capture 3 Register
Counter 4 Register
Period/Capture 4 Register
Duty Cycle/Capture 4 Register
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Versatile Timer Unit (VTU) 265