TC1767
Introduction
2.4.3
Micro Second Channel Interface
The Micro Second Channel (MSC) interface provides serial communication links
typically used to connect power switches or other peripheral devices. The serial
communication link includes a fast synchronous downstream channel and a slow
asynchronous upstream channel. Figure 7 shows a global view of the interface signals
of the MSC interface.
fMSC
Clock
Control
fCLC
FCLP
FCLN
SOP
SON
EN0
Address
Decoder
MSC
Module
(Kernel)
SR[3:0]
16
Interrupt
Control
EN1
4
EN2
To DMA
EN3
ALTINL[15:0]
ALTINH[15:0]
EMGSTOPMSC
8
SDI[7:0]
16
MCB06059
Figure 7
General Block Diagram of the MSC Interface
The downstream and upstream channels of the MSC module communicate with the
external world via nine I/O lines. Eight output lines are required for the serial
communication of the downstream channel (clock, data, and enable signals). One out of
eight input lines SDI[7:0] is used as serial data input signal for the upstream channel. The
source of the serial data to be transmitted by the downstream channel can be MSC
register contents or data that is provided on the ALTINL/ALTINH input lines. These input
lines are typically connected with other on-chip peripheral units (for example with a timer
unit such as the GPTA). An emergency stop input signal makes it possible to set bits of
the serial data stream to dedicated values in an emergency case.
Clock control, address decoding, and interrupt service request control are managed
outside the MSC module kernel. Service request outputs are able to trigger an interrupt
or a DMA request.
Data Sheet
34
V1.3, 2009-09
INFINEON [ Infineon ]
