Functional Description
(d) SPCR:C×C1, C×C0 = 11
B× looping from/to S/T
transmission of variable pattern to S/T
IOM R -2 Interface
S/T Interface
(DD)
(DU)
IDP0
IDP1
Layer-1
Functions
Bx
Bx
CxR
µP
ITS02354
2.4.4
MONITOR Channel Handling
In IOM-2 mode, the MONITOR channel protocol is a handshake protocol used for high speed
information exchange between the ISAC-S and other devices, in MONITOR channel "0" or "1"
(see figure 29). In the non-TE mode, only one MONITOR channel is available ("MONITOR
channel 0").
The MONITOR channel protocol is necessary:
● For programming and controlling devices attached to the IOM. Examples of such devices
are: layer-1 transceivers (using MONITOR channel 0), and peripheral V/D modules that do
not need a parallel microcontroller interface (monitor channel 1), such as the Audio Ringing
Codec Filter PSB 2160.
● For data exchange between two microcontroller systems attached to two different devices
on one IOM-2 backplane. Use of the MONITOR channel avoids the necessity of a dedicated
serial communication path between the two systems. This greatly simplifies the system
design of terminal equipment (figure 36).
Note: There is normally no necessity for monitor channel operations over "MONITOR channel
0" since the internal layer-1 part of the ISAC-S does not support this function. The
implemented MONITOR handler can however be used with external layer-1
transceivers in case only the ICC part of the ISAC-S is used (ADF1:TEM).
Semiconductor Group
71
INFINEON [ Infineon ]
