| 摘要 |
An interface device (3) is used to couple a first (101) and second (201) bi-directional signal path, such as I2C. The first bi-directional signal path (101) floats at a logic high level. Stations (110) coupled to the first signal path (101) are capable of generating a logic low level on the first signal path (101). To avoid that the system gets latched in a low state, a medium logic level is used on the first signal path (101). The interface device (3) generates the medium logic level on the first bi-directional signal path (101) in response to a low logic level on the second signal path (201). The interface device (3) generates on the second signal path (201) a low logic level in response to a low logic level on the first signal path and, otherwise, generates a high logic level. The stations (110) on the first signal path (101) detect the medium logic level and the low logic level as LOW and the high logic level as HIGH. |
