Channel Map
This channel map gives information, which channel of during the configuration
is setting which feature of the pss.
The instructions and specification of the SPI interface and general usage information of the DAC is given in the DAC datasheet, which should be used in conjunction with this page.
Reset State
After power up or after reset, the default value for all channels is 0x000.
Current Setting Range
The current reference and current limits shall only be set in the range \(I \in [-20A, +20A]\). The device will not be damaged if other values are set, but specification may not be met.
Upper and Lower Limit
The upper limit shall be configured to be greater than the lower limit. If
the condition is not met, the output will not be connected, regardless of
configuration conf_output.
Digital Channels
The Channels with configuration type Digital must only be configured with the explicitly specified values. Failing to configure one of the specified values will not damage the device, but the configuration is undefined and may be either of the given values.
| Channel Number | Configuration Type | Mnemonic | Description |
|---|---|---|---|
| 0 | Digital | conf_output | 0x000 = output high Z, 0xFFF = output defined by settings in channel 1 to 7 |
| 1 | Digital | conf_refselect | 0x000 = voltage (follow conf_vref, limited by conf_lcl and conf_ucl), 0xFFF = current (follow conf_iref, limited by conf_lvl and conf_uvl) |
| 2 | Analog | conf_vref | Set voltage reference to \(U = \frac{n}{2^{12}} \cdot 5V\) |
| 3 | Analog | conf_iref | Set current reference to \(I = \frac{n}{2^{12}} \cdot 50A - 25 A\) |
| 4 | Analog | conf_lvl | Set lower voltage limit to \(U = \frac{n}{2^{12}} \cdot 5V\) |
| 5 | Analog | conf_uvl | Set upper voltage limit to \(U = \frac{n}{2^{12}} \cdot 5V\) |
| 6 | Analog | conf_lcl | Set lower current limit to \(I = \frac{n}{2^{12}} \cdot 50A - 25 A\) |
| 7 | Analog | conf_ucl | Set upper current limit to \(I = \frac{n}{2^{12}} \cdot 50A - 25 A\) |
Info