IPAC-X datasheet(97/270 Pages) INFINEON

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IPAC-X

PSB/PSF 21150

Description of Functional Blocks

Data Sheet

2003-01-30

3.7.1

IOM-2 Handler

The IOM-2 handler offers a great flexibility for handling the data transfer between the

different functional units of the IPAC-X and voice/data devices connected to the IOM-2

interface. Additionally it provides a microcontroller access to all timeslots of the IOM-2

interface via the four controller data access registers (CDA). Figure 51 shows the

architecture of the IOM-2 handler. For illustrating the functional description it contains all

configuration and control registers of the IOM-2 handler. A detailed register description

can be found in Chapter 4.4.

The PCM data of the functional units

• Transceiver (TR) and the

• Controller data access (CDA)

• B-channel HDLC controllers

can be configured by programming the time slot and data port selection registers

(TSDP). With the TSS bits (Time Slot Selection) the PCM data of the functional units can

be assigned to each of the 32 PCM time slots of the IOM-2 frame. With the DPS bit (Data

Port Selection) the output of each functional unit is assigned to DU or DD respectively.

The input is assigned vice versa. With the data control registers (xxx_CR) the access to

the data of the functional units can be controlled by setting the corresponding control bits

(EN, SWAP).

The IOM-2 handler also provides access to the

• MONITOR channel (MON)

• C/I channels (C/I0,C/I1)

• TIC bus (TIC) and

• HDLC control

The access to these channels is controlled by the registers MON_CR, DCI_CR and

BCHx_CR.

The IOM-2 interface with the two Serial Data Strobes (SDS1,2) is controlled by the

control registers IOM_CR, SDS1_CR and SDS2_CR.

The reset configuration of the IPAC-X IOM-2 handler corresponds to the defined frame

structure and data ports of a master device in IOM-2 terminal mode (see Figure 49).

IPAC-X Datasheet(PDF) 97 Page - Infineon Technologies AG