PMD MC73110, Руководство пользователя

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MC73110 Developer’s Kit Manual 38
73110 Electrical Reference
5
5.2.5 Remote Switcher Connector (J5)
The remote switcher connector inputs and outputs various signals that make it possible for the user to develop a
separate switching block, while still using the digital logic of the DK card to power the motor control IC.
Signal Pin # Description
AmpliferEnable 1 This signal is connected to the AmplifierDisable signal from MC73110. It can be
programmed to go inactive under certain erroneous MCP conditions
PWMOutputDisable 2 This signal provides a digital input connected to the MC73110 pin of the same name.
A high level on this signal indicates that PWMOutputDisable is not active, a low
indicates it is active.
I
2
CClk 3 This signal connects to the remote switcher’s temperature sensor I
2
C clock
connection.
I
2
Cdata 4 This signal connects to the remote switcher’s temperature sensor I
2
C data
connection.
PWMCHigh/PWMC 5 These signals connect to the PWM drive signals of the same name at the MC73110.
PWMLow 6
PWMBHigh/PWMB 7
PWMBLow 8
PWMAHigh/PWMA 9
PWMALow 10
+3.3V 11 +3.3V power for digital logic
AGND 12
13
14 These signals are analog returns.
CurrentA 15 These analog input signals hold the instantaneous current through phase A and phase
CurrentB 16 B of the motor coils. The input voltage range is 0 to 3.3V, referenced at to 1.65V.