PSB 21373 H V1.1 Infineon Technologies, PSB 21373 H V1.1 Datasheet - Page 77

• 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
2.3.4.2
External Layer-1 State machine
Instead of using the integrated layer-1 state machine it is also possible to implement the
layer-1 state machine completely in software.
The internal layer-1 state machine can be disabled by setting the L1SW bit in the
TR_CONF0 register (see chapter 7.2.6) to ’1’.
The transmitter is completely under control of the microcontroller via register TR_CMD
(see chapter 7.2.5).
The status of the receiver is stored in register TR_STA (see chapter 7.2.4) and has to
be evaluated by the microcontroller. This register is updated continuously. If not masked
a RIC interrupt (see chapter 7.2.6) is generated by any change of the register contents.
The interrupt is cleared after a read access to this register.
Data Sheet
77
2002-05-13