MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 908

• Manufacturer Part Number: MK30DN512ZVLK10
• Description: ARM Microcontrollers - MCU KINETIS 512K SLCD
• Manufacturer: Freescale Semiconductor

Specifications of MK30DN512ZVLK10

• Core: ARM Cortex M4
• Processor Series: K30
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-80
• Mounting Style: SMD/SMT

Functional Description
(CH(n)FVAL[3:0] bits in FILTER0 register). The phase B input filter is enabled by
PHBFLTREN bit and this filter’s value is defined by CH1FVAL[3:0] bits (CH(n
+1)FVAL[3:0] bits in FILTER0 register).
Except for CH0FVAL[3:0] and CH1FVAL[3:0] bits, no channel logic is used in
quadrature decoder mode.
The PHAPOL bit selects the polarity of the phase A input, and the PHBPOL bit selects
the polarity of the phase B input.
The QUADMODE selects the encoding mode used in the quadrature decoder mode. If
QUADMODE = 1, then the count and direction encoding mode (see the following figure)
is enabled. In this mode, the phase B input value indicates the counting direction (FTM
counter increment or decrement), and the phase A input defines the counting rate (FTM
counter is updated when there is a rising edge at phase A input signal).
908
phase A input
system clock
phase B input
It is important to notice that the FTM counter is clocked by the
phase A and B input signals when quadrature decoder mode is
selected. Therefore it is expected that the quadrature decoder be
used only with the FTM channels in input capture or output
compare modes.
D
D
CLK
CLK
Figure 36-250. Quadrature Decoder Block Diagram
synchronizer
synchronizer
Q
Q
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
D
D
CLK
CLK
Q
Q
CH0FVAL[3:0]
CH1FVAL[3:0]
Filter
Filter
Filter
Note
PHBFLTREN
PHAFLTREN
0
1
0
1
filtered phase A signal
filtered phase B signal
PHAPOL
FTM counter
direction
PHBPOL
Freescale Semiconductor, Inc.
enable
up/down
TOFDIR
FTM counter
CNTIN
MOD
QUADIR