PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 29

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

1.5.8
Note 1:
An LT configuration with up to 8 IEC-Qs can be built with an EPIC
EPIC
handling. The IDEC
Figure 11
Semiconductor Group
®
controls the C/I-channel, the B-channel slot assignment and the Monitor channel
PCM
For LT applications in general it is recommended to use the device kit
PEB 24911 / PEB/F 24902 (Quad IEC DFE-Q/AFE), which offers the same
function for four metallic lines. In some special configurations, however, (e.g.
line cards with 6 lines) it might be more cost effective to use the IEC-Q. In the
configuration below system integration on existing boards is sketched.
LT Application and Access Network
LT and Access Network Applications
PEB 2056
EPIC
®
®
is a HDLC-controller for four independent D-channels.
µP i/f
Microprocessor
PEB 2075
PEB 2075
IOM
IDEC
IDEC
®
-2
®
®
(Optional)
29
µP i/f
8
1
PEB/F 2091
PEB/F 2091
IEC-Q
V5.3
V5.3
®
and two IDEC
Upstream
Data Sheet 01.99
Interface
Interface
U
U
PEB 2091
PEF 2091
Overview
®
s. The