Freescale Semiconductor 33395, Справочное руководство

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Pin Descriptions
Signal Descriptions
33395 Evaluation Motor Board DRM33395 Designer Reference Manual
Pin Descriptions 23
NOTE:
The gate driver ‘soft reset’ is necessary to leave the drive off status that
is not entered by default. When a fault arises or a parallel cable that is
connected between a computer and the controller board introduces an
obscure voltage from this computer into the motor system, the reset
assures correct driver re-initialization. The soft reset is activated either
by toggling the SW1 rotary switch from position 3 to 2 (140A01 board
version), or by resetting with the SW1 push button (140A02 version).
Then the board generates a resetting pulse on the driver PWM_IN pin.
Table 3-4 Gate Driver PWM Signal Selection
SW1 Rotary Switch on
140A01 board
Representation on
140A02 board
Comment
Position 1 (1PWM pin) JP5 jumper uni position
Controller board gives 1
PWM signal
Position 2 (2+ pin) JP5 position
High state logic 1 (6 PWM
signals, default)
Position 3 (3- pin)
SW1 button press
(RESET)
Resets drive off status
(temporary)