TC1797 Datasheet, PDF (49/190 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1797
Introduction
2.5.6 Micro Link Serial Bus Interface
This TC1797 contains two Micro Link Serial Bus Interfaces, MLI0 and MLI1.
The Micro Link Interface (MLI) is a fast synchronous serial interface to exchange data
between microcontrollers or other devices, such as stand-alone peripheral components.
Figure 10 shows how two microcontrollers are typically connected together via their MLI
interfaces.
Controller 1
CPU
Controller 2
CPU
Peripheral
A
Peripheral
B
Peripheral
C
Peripheral
D
Memory
MLI
MLI
Memory
System Bus
System Bus
MCA06061
Figure 10 Typical Micro Link Interface Connection
Features
• Synchronous serial communication between an MLI transmitter and an MLI receiver
• Different system clock speeds supported in MLI transmitter and MLI receiver due to
full handshake protocol (4 lines between a transmitter and a receiver)
• Fully transparent read/write access supported (= remote programming)
• Complete address range of target device available
• Specific frame protocol to transfer commands, addresses and data
• Error detection by parity bit
• 32-bit, 16-bit, or 8-bit data transfers supported
• Programmable baud rate: f_MLI/2 (max. f_MLI = f_SYS)
• Address range protection scheme to block unauthorized accesses
• Multiple receiving devices supported
Data Sheet
45
V1.1, 2009-04