MC1451A Datasheet, PDF (16/51 Pages) List of Unclassifed Manufacturers – Advanced Step Motor Control Chipset

IC
Pin Name
ENC Chip Pinouts
ENC
QuadA1
QuadB1
QuadA2
QuadB2
QuadA3
QuadB3
QuadA4
QuadB4
ENC
CPClk
ENC
ENCClkIn
ENC
ENCClkOut
ENC
CPAddr0
CPAddr2
CPAddr3
ENC
~CPWrite
ENC
CPCntrl0
ENC
CPData2
CPData3
CPData4
CPData5
CPData6
CPData7
CPData8
CPData9
CPData10
CPData11
ENC
Vcc
ENC
GND
Pin #
Description/Functionality
30
Quadrature A, B channels for axis 1 - 4 (input). Each of these 4 pairs of quadrature (A, B)
36
signals provide the position feedback for an incremental encoder. When the encoder is
17
moving in the positive, or forward direction, the A signal leads the B signal by 90 degs.
18
27
NOTE: Many encoders require a pull-up resistor on each of these signals to establish a
28
proper high signal (check the encoder electrical specifications)
5
29
NOTE: For MC1451A-E all 8 pins are valid. For MC1251A-E pins for axes 1 & 2 only are
valid. For MC1151A-E pins for axis 1 only are valid. Invalid axis pins can be left unconnected.
7
ENC chip clock (input). This signal is connected directly to the I/OClkOut pin (CP chip) and
provides the clock signal for the ENC chip. The frequency of this signal is 1/4 the user-
provided ClkIn (CP chip) frequency.
33
Phase shifted clock (input). This signal is connected to ENCClkOut (ENC chip), and inputs a
phase shifted clock signal.
6
Phase shifted clock (output). This signal is connected to ENCClkIn (ENC chip), and outputs a
phase shifted clock signal.
24
ENC chip to CP chip communication address (input). These 3 signals are connected to the
20
corresponding CPAddr0, 2, & 3 pins (CP chip), and together provide addressing signals to
23
facilitate CP to ENC chip communication.
13
15
22
19
9
31
41
42
44
1
12
2
3, 14, 16, 25, 35
10, 21, 32, 34, 43
NOTE: There is no CPAddr1 pin on the ENC chip.
ENC chip to CP chip communication write (input). This signal is connected to the ~I/OWrite
pin (CP chip) and provides a write strobe to facilitate CP to ENC chip communication.
ENC chip to CP chip communication control (input). This signal is connected to the I/OCntrl0
pin (CP chip), and provides control signals to facilitate CP to ENC chip communication.
ENC chip to CP chip data port (bi-directional). These 10 bits are connected to the
corresponding Data2-11 pins on the CP chip, and facilitate communication to/from the ENC
and CP chips.
ENC chip supply voltage pin. All of these pins must be connected to the supply voltage.
Supply voltage = 4.75 to 5.25 V
ENC chip ground pin. All of these pins must be connected to the power supply return.
16