PSB 21373 H V1.1 Infineon Technologies, PSB 21373 H V1.1 Datasheet - Page 68

• 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

2.3.4
The layer-1 activation/deactivation can be controlled by an internal state machine via the
IOM-2 C/I0 channel or by software via the microcontroller interface directly. In the default
state the internal layer-1 state machine of the SCOUT-DX is used.
To disable the internal state machine TR_CONF0.L1SW must be set to ’1’ and a C/I code
TIM (’0000’) has to be programmed into CIX0.CODX0
If the internal state machine is disabled the layer-1 commands, which are normally
generated by the internal state machine can be written directly into the TR_CMD register
and the indications can be read out of the TR_STA register respectively. The SCOUT-
DX layer-1 control flow is shown in figure 35.
Figure 35
Layer-1 Control
2.3.4.1
In the following sections the layer-1 control by the SCOUT-DX state machine will be
described. For the description of the IOM-2 C/I0 channel see also chapter 2.2.5.
The layer-1 functions are controlled by commands issued via the CIX0 register. These
commands, sent over the IOM C/I channel 0 to layer 1, trigger certain procedures, such
as activation/deactivation, switching of test loops and transmission of special pulse
patterns. Responses from layer 1 are obtained by reading the CIR0 register after a CIC
interrupt (ISTA).
Data Sheet
Register
Control of the Line Interface
Internal Layer-1 State machine
CIX0
CIR0
C/I
Command
C/I
Indication
Microcontroller Interface
Layer-1 Control
Machine
Layer-1
State
Transmit
INFO
Receive
INFO
68
Command Register
(TR_CONF.L1SW)
Disable internal
Status Register
for Transmitter
Statemachine
of Receiver
(TR_CMD)
(TR_STA)
Transmitter
Receiver
layer1_ctl
PSB 21373
2002-05-13