Circuit board system
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorLI-Wen Guo
Life of this patent
Estimating the term…
Abstract
A circuit board system for connecting with at least an expansion card that includes a Programmable Logic Device (PLD) electrically coupled to the expansion slot. The PLD is configured to detect whether the expansion card is compatible with the circuit board system. If the PLD detects that the expansion card is not compatible with the circuit board system, the logic controller cuts off the connection between the main power supply and the expansion slot.
Claims9
A circuit board system for connecting with at least an expansion card, comprising:
- at least an expansion slot for connecting with the expansion card;
- a Programmable Logic Device (PLD) electrically coupled to the expansion slot;
- and capable of for detecting whether the expansion card is compatible with the circuit board system, and outputting a detecting result;
- a logic controller electrically coupled to the expansion slot and the PLD;
- and
- a main power supply electrically coupled to the expansion slot via the logic controller;
- wherein when the PLD detects that the expansion card is not compatible with the circuit board system, the logic controller cuts off the connection between the main power supply and the expansion slot.
A method for detecting expansion cards connected with expansion slots on a circuit board system, the method comprising the following steps:
- the circuit board system being powered on by connecting a main power supply and an auxiliary power supply thereon with an external power supply;
- a Programmable Logic Device (PLD) detecting a present code of the expansion card connected with the corresponding expansion slot;
- if the present code of the expansion card can not be detected by the PLD, the PLD outputs a first control signal to a logic controller, the logic controller cuts off the connection between the main power supply and the expansion slot;
- if the present code of the expansion card can be detected by the PLD, the PLD further detects the ID code of the expansion card, and compares the detected ID code with the a plurality of stored expansion card ID codes to determine whether the expansion card is compatible with the circuit board system.
Dependencies are inferred from the claim text.