PEB20571 INFINEON [Infineon Technologies AG], PEB20571 Datasheet - Page 59

• Manufacturer Part Number: PEB20571
• Description: ICs for Communications
• Manufacturer: INFINEON [Infineon Technologies AG]

3.2.2
3.2.2.1
On the ISDN line side of the VIP, data is ternary coded. Since the VIP contains logic to
detect the level of the signal, only the data value is transferred via IOM-2000 to DELIC.
U
• In U
S/T Mode
• In S/T mode, data and control information is sent via IOM-2000 data interface. Every
Table 3-1
ctrl (bit1) data (bit0) Function
Table 3-2
ctrl (bit1) data (bit0) Function
Note: ’data’ is always transmitted prior to ’ctrl’ via DX/DR lines (refer to Figure 3-2).
Preliminary Data Sheet
0
0
1
1
0
0
1
1
PN
data bit has a control bit associated with it. Thus, for each S/T line signal, 2 bits are
transferred via DX and DR. Bit0 is assigned to the user data, and bit1 carries control
information.
Mode
PN
mode, only data is sent via the IOM-2000 data interface.
IOM-2000 Frame Structure
Data Interface
0
1
0
1
0
1
0
1
Control Bits in S/T Mode on DR Line
Control Bits in S/T Mode on DX Line
Logical ’0’ received on line interface
Logical ’1’ received on line interface
Received E-bit = inverted transmitted D-bit (E=D) (LT-T only)
F-bit (Framing) received; indicates the start of the S frame
Logical ’0’ transmitted on line interface
Logical ’1’ transmitted on line interface
not used
F-bit (Framing) transmitted; indicates the start of the S frame
3-3
Interface Description
DELIC
2003-08