The following figure shows a sample circuit illustrating a termination technique for HSTL class I for the 1.2V, 1.5V, or 1.8V versions. In a specific circuit, all drivers and receivers must be at the same voltage level (1.2V, 1.5V, or 1.8V); they are not interchangeable (that is, HSTL_I_12 should only interface with HSTL_I_12). Only HP I/O banks support the DCI standards.
The following figure shows a sample circuit illustrating a termination technique for HSTL class-I for the 1.2V, 1.5V, or 1.8V versions in a bidirectional configuration. In a specific circuit, all drivers and receivers must be at the same voltage level (1.2V, 1.5V, or 1.8V); they are not interchangeable (that is, HSTL_I_18 should only interface with HSTL_I_18). Only HP I/O banks support the DCI standards.