PEB 20571 F V3.1 Infineon Technologies, PEB 20571 F V3.1 Datasheet - Page 119

• Manufacturer Part Number: PEB 20571 F V3.1
• Description: IC LINE CARD CTRLR DSP TQFP-100
• Manufacturer: Infineon Technologies

Specifications of PEB 20571 F V3.1

• Function: PBX Controller with DSP
• Interface: ISDN
• Voltage - Supply: 3.13 V ~ 3.47 V
• Current - Supply: 272.6mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LFQFP
• Includes: Layer-1 Control, Signaling Control, Signal Processing, Voice Channel Handling
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Number Of Circuits: -
• Other names: PEB20571FV3.1X; PEB20571FV31XP; SP000007539

4.3.2.8
The IOM-2 ports can be configured to Push-Pull or Open-Drain modes by a dedicated
bit in the IOMU Control Register. When programmed to Open-Drain, DD0/DD1 is tri-
stated when a ‘1’ is supposed to be transmitted, or during a time slot quadruplet with the
associated Tri-State Register bit set.
In both cases the external pull-up resistor, which is used when working in open-drain
mode, will “pull” the value to ‘1’.
Note: When the IOMU is programmed to 1x 64 time slots per frame mode, DD1 is tri-
Figure 37
Figure 38
Data Sheet
stated, independently of the IOM-2 interface push-pull or open-drain mode.
IOM-2 Push-Pull and Open-Drain Modes
IOM-2 Interface Open-Drain Mode
IOM-2 Interface Push-Pull Mode
DD1
DD1
DD0
DD0
DELIC
DELIC
102
downstream1
data
downstream1
data
downstream0
data
downstream0
data
IOMU
IOMU
Functional Description
ITSR
ITSR
PEB 20570
PEB 20571
2003-07-31