mc68hc912bd32 Freescale Semiconductor, Inc, mc68hc912bd32 Datasheet - Page 127

• Manufacturer Part Number: mc68hc912bd32
• Description: 16-bit Device Composed Of Standard On-chip Peripherals
• Manufacturer: Freescale Semiconductor, Inc

PWTST— PWM Special Mode Register (“Test”)
15-pwm
RESET:
DISCR
Bit 7
0
PSBCK — PWM Stops while in Background Mode
DISCR — Disable Reset of Channel Counter on Write to Channel
Counter
DISCP — Disable Compare Count Period
DISCAL — Disable load of Scale-counters on write to the associated
scale-registers
DISCP
Read anytime but write only in Special mode (SMOD = 1). These bits
are available only in Special mode and are reset in Normal mode.
The PWM has some special test functions which are only accessible
when the device is in Special Mode. Special Mode is indicated to the
PWM module when the SMOD line on the LIB is asserted.
When the SMOD line is asserted, the Special Mode register control
bits are accessed via the LIB. When SMOD is not asserted, writes to
the Special Mode control bits have no effect ana all bits in the Special
Mode register are forced to 0. This ensures that the PWM Special
Mode can not be invoked inadvertently during normal operation.
Freescale Semiconductor, Inc.
6
0
For More Information On This Product,
0 = Allows PWM to continue while in background mode. This is
1 = Disable PWM input clock when the part is in background mode.
0 = Normal operation. Write to PWM channel counter will reset
1 = Write to PWM channel counter does not reset channel counter.
0 = Normal Operation
1 = In Left-Aligned Output mode, match of period does not reset the
0 = Normal Operation
1 = Write to PWSCAL0 and PWSCAL1 does not load scale
useful for emulation.
channel counter.
associated PWM counter register.
counters
DISCAL
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5
0
Pulse Width Modulator
4
0
0
3
0
0
2
0
0
MC68HC912BD32 Rev 1.0
PWM Register Description
1
0
0
Pulse Width Modulator
Bit 0
0
0
$0055