| |||
| Home > Signal Descriptions > Clock and reset signals | |||
Table A.1 shows the clock and reset signals.
Table A.1. Clock and reset signals
| Signal | Type | Source | Description |
|---|---|---|---|
| aclk | Input | Clock source | Clock for the aclk domain. |
| aresetn | Input | Reset source | aclk domain reset signal. This signal is active LOW. |
| cclken | Input | Bus clock | Clock enable for the AXI low-power interface. |
| mclk | Input | Clock source | Clock for mclk domain. |
| mclkn [a] | Input | Clock source | Optional clock for the legacy pad interface. |
| mclkx2 [a] | Input | Clock source | Optional clock for the legacy pad interface. |
| mclkx2n [a] | Input | Clock source | Optional clock for the legacy pad interface. |
| mresetn | Input | Reset source | Reset for mclk domain. This signal is active LOW. |
| pclken | Input | Bus clock | Clock enable for the APB interface. |
[a] This signal is not available when the DDR2 DMC is configured to implement a DDR PHY Interface (DFI) pad interface. | |||