5.2.3.2 GDU Control Register 1
| Name: | GDUCR1 |
| Offset: | 0x05 |
| Reset: | 0x1E |
| Property: | R/W |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| CCPT [7:2] | CCEN | BEMFEN | |||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | |
Bits 7:2 – CCPT [7:2]
(Submit Feedback)Cross Conduction Protection Timer bits. The cross conduction protection time can be calculated as follows: tCC = 100 ns × N, N = 0 to 63 [0x00 to 0x3F]. The role of the CCPT is to prevent shoot-through currents in the external MOSFET transistors (see CROSS CONDUCTION PROTECTION).
Bit 1 – CCEN
(Submit Feedback)Cross Conduction Protection Enable bit. The CCEN bit enables the cross conduction protection feature. Disabling cross conduction protection results in the disabling of both the cross conduction timer and adaptive dead-time generation.
| Value | Description |
|---|---|
| 1 | Cross conduction protection is enabled. |
| 0 | Cross conduction protection is disabled; hence, the cross conduction protection timer and adaptive dead-time timer are also disabled. |
Bit 0 – BEMFEN
(Submit Feedback)Back-EMF Comparator Enable bit. If both the current sense amplifier ‘1’ (CSA1EN = ‘1’) and the Back-EMF comparator (BEMFEN = ‘1’) are enabled, then Back-EMF detection and current sense amplifier 1 will be disabled.
| Value | Description |
|---|---|
| 1 | It will activate Back-EMF detection. The BEMF1, BEMF2 and BEMF3 pins are activated and signal the current ZCD state. |
| 0 | It disables the Back-EMF detection. The BEMFx pins are then released for OpAmp1 operation. |