PSB 21373 H V1.1 Infineon Technologies, PSB 21373 H V1.1 Datasheet - Page 72

• Manufacturer Part Number: PSB 21373 H V1.1
• Description: IC SPEECH AND VOICE MQFP-44
• Manufacturer: Infineon Technologies
• Series: SCOUT™r

Specifications of PSB 21373 H V1.1

• Function: CODEC
• Interface: IOM-2, SCI
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 97.5mA
• Mounting Type: Surface Mount
• Package / Case: 44-BQFP
• Includes: Activation and Deactivation, Channel Handler, DTMF / Tone / Ringing Generator, HDLC Controller, Speakerphone, Voice Monitoring
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Operating Temperature: -
• Other names: PSB21373HV1.1XT; PSB21373HV11XT; SP000007602

PSB 21373
Level Detect
During the first period of receiving info 2 or under severe disturbances on the line, the
receiver recognizes the receipt of a signal but is not (yet) synchronized.
Synchronized
The receiver is synchronized and detects info 2. It continues the activation procedure by
transmission of info 1.
Activated
The receiver is synchronized and detects info 4. It concludes the activation procedure by
transmission of info 3. All user channels are now conveyed transparently.
Analog Loop 3 Pending
Upon the C/l-command Activation Request Loop (ARL) the SCOUT-DX loops back the
transmitter to the receiver and activates by transmission of info 1. The receiver is not yet
synchronized.
Analog Loop 3 Synchronized
After synchronization the transmitter continues by transmitting info 3.
Analog Loop 3 Activated
After recognition of the looped back info 3 the channels are looped back transparently.
Test Mode i
After entering test mode initiated by SCP-, SSP-commands.
Level Detect, Resynchronization
During the first period of receiving info 2 or under severe disturbances on the line the
receiver recognizes the receipt of a signal but is not (yet) synchronized. In extremely rare
situations of severe line disturbances, the receiver might become locked in this state. To
avoid this, it is recommended that the software issues an RES command to restart
activation if SCOUT-DX remains in this state longer than an acceptable period. This time
out period should be at least 110 ms, but the exact period should be chosen by the user
based on system concerns.
Reset state
A software reset (RES) forces the SCOUT-DX to an idle state where INFO 0 is
transmitted. Thus activation from the LT is not possible. Clocks are still supplied.
Data Sheet
72
2002-05-13