Functional Description
2.3.2
IOM®-1 Interface Connections
In IOM-1 interface mode
– pin IDP0 carries B channel, MONITOR, D and C/I data from layer-1 to layer-2
– pin IDP1 carries B channel, MONITOR, D and C/I data from layer-2 to layer-1.
IDP1 is an open drain output with an integrated pull up circuitry. The B channels can be set
inactive (FF ) by setting the B channel connect bits C1C1-0 and C2C1-0 in the SPCR register
H
to 0 (SLD loop), which is the state after a hardware reset.
The MONITOR channel is inactive (FF ) if no MONITOR channel transfer is programmed and
H
the TIC bus (i.e. the fourth octet of IOM frame: D and C/I channels) is not accessed.
ISAC R -S
VDD
S/T Interface
IOM R -1 TIC Bus
IDP0
IDP0
IDP1
Layer-1
Functions
IDP1
(Open Drain)
IDP0 IDP1
IDP0 IDP1
Layer-2
Layer-2
Functions
e.g. ICC
(PEB 2070)
µP
µP
Optional: Up to 7 Layer 2
Controllers can have access to
R
the
IOM -1 TIC Bus (D and
C/I Channel)
ITS02329
Figure 16
IOM®-1 Data Ports 0, 1 (IOM®-1)
Semiconductor Group
43
INFINEON [ Infineon ]
