peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 207

• Manufacturer Part Number: peb20560
• Description: Dsp Oriented Pbx Controller Doc
• Manufacturer: Infineon Technologies Corporation

3
3.1
The ELIC, designed as a flexible line-card controller, has the following main applications:
– Digital line cards, with the CFI typically configured as IOM-2, IOM-1 (MUX) or SLD.
– Analog line cards, with the CFI typically configured as IOM-2 or SLD.
– Key systems, where the ELIC’s ability to mix CFI-configurations is utilized.
To operate the ELIC the user must be familiar with the device’s microprocessor interface,
interrupt structure and reset logic. Also, the operation of the ELIC’s component parts
should be understood.
The devices major components are the EPIC-1, the SACCO-A and SACCO-B, and the
D-channel arbiter. While EPIC-1 and SACCO-B may all be operated independently of
each other, the D-channel arbiter can be used to interface the SACCO-A to the CFI of
the EPIC-1. This mode of operation may be considered to utilize the ELIC most
extensively. The initialization example, with which this operational description closes, will
therefore set the ELIC to operate in this manner.
3.1.1
The ELIC-signals events that the µP should know about immediately by emitting an
interrupt request on the INT-line. To indicate the detailed cause of the request a tree of
interrupt status registers is provided.
Figure 3-1
Semiconductor Group
MASK_E
ISTA_E
Operational Description
ELIC0 and ELIC1
Interrupt Structure and Logic
ELIC
Watchdog Timer
D-Channel Arbiter
®
Interrupt Structure
IWD
IDA
EPIC
IEP
R
EXB
HDLC Channel B, Extended
ICB EXA ICA
HDLC Channel B
3-1
HDLC Channel A, Extended
HDLC Channel A
ISTA
MASK
Operational Description
ITD05843
ISTA_A
MASK_A
EXIR_A
ISTA_B
MASK_B
EXIR_B
PEB 20560
2003-08