
PSB 2115
PSF 2115
Functional Description
Semiconductor Group
78
11.97
2.4.4.4
The features accessible via the IOM-2 Channel register allow to implement simple
switching functions. These make the IPAC the ideal device for intelligent NT
applications. Please refer also to the section “IOM-2 channel switching”. Two types of
manipulation are possible: the transfer from the pin-strapped IOM-2 channel (0 … 7) into
IOM-2 channel 0 and a change of the B1, B2 and D data source.
MON-8 IOM
-2 Channel Register
Value after Reset: 00
H
Address: 3h
B1L
B1D
B2L
B2D
DL
0
CIL
CIH
RD/WR
B1L
Transfers the B1 channel from its pin-strapped location into IOM-2
channel 0.
Direction of the B1 channel. The normal direction (input/output) of DU and
DD depends on the mode and is shown in
table 4
below. By setting B1D the
direction for the B1 data channel is inverted.
Transfers the B2 channel from its pin-strapped location into IOM-2
channel 0.
Direction of the B2 channel. The normal direction (input/output) of DU and
DD depends on the mode and is shown in
table 4
below. By setting B2D the
direction for the B2 data channel is inverted.
Transfers the D-channel from its pin-strapped location into IOM-2 channel 0.
C/I Channel location: The timeslot position of the C/I Channel can be
programmed as “normal“ (LT-S and LT-T modes: pin strapped IOM-2
channel, TE mode: IOM-2 channel 0) or “fixed“ to IOM-2 channel 0
(regardless the selected mode).
C/I Channel handling: Normally the C/I commands are read from the pin-
strapped IOM-2 channel. With this bit programmed C/I channel access is
only possible via the SM/CI register.
B1D
B2L
B2D
DL
CIL
CIH
Table 9
DU/DD Direction
MODE0 MODE1
/EAW
EAW
1
0
Transmit data on S
Receive data on S
TE-mode
LT-T mode 1
LT-S mode 1
0
DU (input)
DU (input)
DD (input)
DD (output)
DD (output)
DU (output)