PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 25

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

Figure 6
1.5.4
In Figure 7 an example for base station configuration is sketched. The PEB/F 2091
Version 5.3 is designed to suit to PEB 24911/PEB 24902 (DFE-Q/AFE) in the linecard,
and to the PMB 2727 (Multichannel Burst Mode Controller) in the base station. Several
special features concerning S/G bit control (see "S/G Bit and BAC Bit Operations", page
198) allow flexible and cost effective construction of base station boards without the
need for external circuitry for S/G bit evaluation. Like the S/G bit, the S/G pin can be used
for transmitting a common synchronization pulse to the burst mode controller. Moreover
the undervoltage detection feature (see "Undervoltage Detection", page 92) can be used
to monitor power supply drops on the board.
Semiconductor Group
Wireless Local Loop
Interface
Architecture of Repeater Application
U
Upstream
PEB/F 2091
LT-RP
RST
XIN
15.36 MHz
CLS
µP interface
PLL
FSC
µP
DD
DU
25
DCL
15.36 MHz
PEB/F 2091
NT-RP
Upstream
Interface
U
Data Sheet 01.99
PEB 2091
PEF 2091
Overview