COMMUNICATION METHOD AND INTERFACE BETWEEN A COMPANION CHIP AND A MICROCONTROLLER
First Claim
1. A communication method between a companion chip (CC) and a microcontroller (MC), in the case of which a communication protocol is transmitted, including a first group of data (10) which is used for direct, non-real-time-critical access to the chip (CC), and including a second group of data (20), based on which a real-time-critical access to the chip (CC) takes place, the data groups (10, 20) each comprising an operation code (OC), the length of which is shorter in the second data group (20) than in the first data group (10), and each data group (10, 20) being identifiable via the bit pattern of the operation code (OC).
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Abstract
The invention relates to a communication method and interface between a companion chip (CC) and a microcontroller (MC), a communication protocol being transmitted, having a first group of data (10) being drawn on for direct, non-real-time-critical access to the chip (CC), and a second group of data (20) based on which a real-time-critical access to the chip (CC) takes place, the data groups (10, 20) each comprising an operation code (OC), the length of which is shorter in the second data group (20) than in the first data group (10), and each data group (10, 20) being identifiable by the bit pattern of the operation code (OC).
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Citations
15 Claims
- 1. A communication method between a companion chip (CC) and a microcontroller (MC), in the case of which a communication protocol is transmitted, including a first group of data (10) which is used for direct, non-real-time-critical access to the chip (CC), and including a second group of data (20), based on which a real-time-critical access to the chip (CC) takes place, the data groups (10, 20) each comprising an operation code (OC), the length of which is shorter in the second data group (20) than in the first data group (10), and each data group (10, 20) being identifiable via the bit pattern of the operation code (OC).
Specification