US 7,746,115 B2Granted

Data transfer cable for programmable logic devices

AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.

InventorsChung-Chi Huang, Guang-Dong Yuan, Jian-Chun Pan, De-Jun Zeng, Wei-Min Zhang

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Abstract

A programmable logic device (PLD) data transfer cable includes a parallel interface, a programming interface, and a logic control circuit. The parallel interface is used for connecting to PLDs. The logic control circuit includes a first group of transmission channels, a second group of transmission channels, a first group of switches, and a second group of switches. The first and second group of switches control the working status of the first and second group of transmission channels respectively. The electrical connections between pins of the parallel interface and the programming interface when first group of transmission channels are activated are different with those when second group of transmission channels are activated.

Claims11

Dependent claims

A data transfer cable for a programmable logic device (PLD) comprising:

a parallel interface;
a programming interface capable of connecting to a PLD;
and
a logic control circuit connected to the parallel interface and the programming interface, comprising a first group of transmission channels, a second group of transmission channels, a first group of switches controlling the working status of the first group of transmission channels, and a second group of switches controlling the working status of the second group of transmission channels;
wherein the parallel interface is a 25-pin printer interface, a second, fourth, third, and thirteenth pins of the parallel interface are electrically connected to four pins of the programming interface respectively when the first group of transmission channels are activated;
an eighth, third, second and eleventh pins of the parallel interface are connected to four pins of the programming interface respectively when the second group of transmission channels are activated.

3 more elements

Dependencies are inferred from the claim text.