PSB 21373 H V1.1 Infineon Technologies, PSB 21373 H V1.1 Datasheet - Page 147

• 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

Data Sheet
Figure 72
CRAM Access Structure
Figure 73
Signal Flow of the Back-up Procedure
Data Flow
Access
µC
Write:
CCR.DCA = ’1’
CCR.SBP = ’1’
CCR.CBADR = ’x’’
Start back-up procedure block x
DSP access to temp. CRAM block
as soon as transfer has completed
Read CSR.BSYB
Back-up procedure busy?
- µC access to CRAM possible
- Switching the DSP access
Write <Block X>
Update CRAM block x
Write CCR.DCA = ’0’
DSP access to CRAM block x
between CRAM and temporary
CRAM block is possible by DCA
Temporary CRAM
<CBADR_1>
<CBADR_F>
<CBADR_E>
<CBADR_0>
<CBADR_4>
<CBADR_3>
<CBADR_D>
<CBADR_C>
<CBADR_B>
<CBADR_A>
<CBADR_9>
<CBADR_8>
<CBADR_7>
<CBADR_6>
<CBADR_5>
<CBADR_2>
Transfer not busy
147
DCA = ’0’
DCA = ’1’
Transfer busy
Access
DSP
PSB 21373
2002-05-13