PSB21383HV1.3XT Infineon Technologies, PSB21383HV1.3XT Datasheet - Page 49
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PSB21383HV1.3XT
Manufacturer Part Number
PSB21383HV1.3XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.PSB21383HV1.3XT.pdf
(270 pages)
Specifications of PSB21383HV1.3XT
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
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2.2.2.1
The IOM-2 handler provides with its four controller data access registers (CDA10,
CDA11, CDA20, CDA21) a very flexible solution for the access to the 12 IOM-2 time slots
by the microcontroller.
The functional unit CDA (controller data access) allows with its control and configuration
registers
• looping of up to four independent PCM channels from DU to DD or vice versa with the
• shifting or switching of two independent PCM channels to another two independent
• monitoring of up to four time slots on the IOM-2 interface simultaneously
• microcontroller read and write access to each PCM channel
The access principle which is identical for the two channel register pairs CDA10/11 and
CDA20/21 is illustrated in figure 22. The index variables x,y used in the following
description can be 1 or 2 for x, and 0 or 1 for y. The prefix ’CDA_’ from the register names
has been omitted for simplification.
To each of the four CDAxy data registers a CDA_TSDPxy register is assigned by which
the time slot and the data port can be determined. With the TSS (Time Slot Selection)
bits a time slot from 0...11 can be selected. With the DPS (Data Port Selection) bit the
output of the CDAxy register can be assigned to DU or DD respectively. The time slot
and data port for the output of CDAxy is always defined by its own CDA_TSDPxy
register. The input of CDAxy depends on the SWAP bit in the control registers CRx.
If the SWAP bit = ’0’ the time slot and data port for the input and output of the CDAxy
register is defined by its own CDA_TSDPxy register. The data port for the CDAxy input
is vice versa to the output setting for CDAxy.
If the SWAP bit = ’1’, the input port and time slot of the CDAx0 is defined by the
CDA_TSDP register of CDAx1 and the input port and time slot of CDAx1 is defined by
the CDA_TSDP register of CDAx0.
The input and output of every CDAxy register can be enabled or disabled by setting the
corresponding EN (-able) bit in the control register CDAx_CR. If the input of a register is
disabled the output value in the register is retained.
Data Sheet
four CDA registers
PCM channels on both data ports (DU, DD)
Controller Data Access (CDA)
39
PSB 21381/2
PSB 21383/4
Interfaces
2001-03-12
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