Freescale Semiconductor /MKL81Z7 /DRY /PGFR0

Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text

Interpret as PGFR0

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0GFW0 (0)GFP 0 (0)GFE 0 (00)TPSW 0 (00)TPSF 0 (00)TPEX 0 (0)TPE 0 (0)TPS

TPSF=00, TPS=0, TPEX=00, TPE=0, TPSW=00, GFP=0, GFE=0

Description

DryIce Pin Glitch Filter Register

Fields

GFW

Glitch Filter Width

GFP

Glitch Filter Prescaler

0 (0): The glitch filter on tamper pin is clocked by the 512 Hz prescaler clock.

1 (1): The glitch filter on tamper pin is clocked by the 32.768 kHz clock.

GFE

Glitch Filter Enable

0 (0): The glitch filter on tamper pin is bypassed.

1 (1): The glitch filter on tamper pin is enabled.

TPSW

Tamper Pin Sample Width

0 (00): Tamper Pin Sampling is disabled.

1 (01): Tamper Pin Sample Width is 2 cycles for pull enable and 1 cycle for input buffer enable.

2 (10): Tamper Pin Sample Width is 4 cycles for pull enable and 2 cycles for input buffer enable.

3 (11): Tamper Pin Sample Width is 8 cycles for pull enable and 4 cycles for input buffer enable.

TPSF

Tamper Pin Sample Frequency

0 (00): Tamper Pin Sample Frequency is once every 8 cycles

1 (01): Tamper Pin Sample Frequency is once every 32 cycles

2 (10): Tamper Pin Sample Frequency is once every 128 cycles

3 (11): Tamper Pin Sample Frequency is once every 512 cycles

TPEX

Tamper Pin Expected

0 (00): Tamper pin expected value is logic zero.

1 (01): Tamper pin expected value is active tamper 0 output.

2 (10): Tamper pin expected value is active tamper 1 output.

3 (11): Tamper pin 0 expected value is active tamper 0 output XORed with active tamper 1 output.

TPE

Tamper Pull Enable

0 (0): Pull resistor is disabled on tamper pin.

1 (1): Pull resistor is enabled on tamper pin.

TPS

Tamper Pull Select

0 (0): Tamper pin pull direction will always assert the tamper pin.

1 (1): Tamper pin pull direction will always negate the tamper pin.

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