peb22504 Infineon Technologies Corporation, peb22504 Datasheet - Page 67

• Manufacturer Part Number: peb22504
• Description: Quad Line Interface Unit For E1dt1dj1 Quadliu
• Manufacturer: Infineon Technologies Corporation

RD(1:0)
Line Interface Mode 3 (Read/Write)
Addresses: 04
Value after reset: 00
LIM3
LBO(2:1)
GTP
MTP
Data Sheet
LBO2
7
H
, 24
Select Receive Data Output
These bits select the different stages of the received data path.
00 = Received data is decoded (HDB3/B8ZS/AMI) and output on
01 = Data recovered by the DPLL (not decoded) is output on
10 = Sliced data is transferred directly to RDOP/N.
11 = Sliced data is directly transferred to RDOP/N and the bypassed
Line Build-Out (T1 mode only)
In long-haul applications, LIM1.EQON = 1, a transmit filter can be
optionally placed in the transmit path to attenuate the signal level on
pins XL1/2. Selecting the transmitter attenuation is possible in steps
of 7.5 dB at 772kHz, which meets FCC Part 68 and ANSI T1.403.
To meet the line build-out characteristics defined by ANSI T1.403,
registers XPM(2:0) should be programmed as follows:
00 = 0 dB
01 = -7.5 dB -->XPM(0:2) = 11
10 = -15 dB -->XPM(0:2) = 8E
11 = -22.5 dB -->XPM(0:2) = 09
PRBS/IBL Generator in Transmit Path
0 =
1 =
PRBS/IBL Monitor in Transmit Path
0 =
1 =
LBO1
H
H
, 44
RDOP/N.
RDOP/N.
receive path logic is switched off to reduce power consumption
unless remote loop is activated.
The PRBS/IBL generator is placed in the receive path.
The PRBS/IBL generator is placed in the transmit path.
The PRBS/IBL monitor is placed in the receive path.
The PRBS/IBL monitor is placed in the transmit path.
H
, 64
GTP
H
MTP
67
EPRM
H
H
H
, 01
, 02
XPRBS
, 01
H
H
H
, 20
, 20
, 20
H
H
IPRBS
H
Register Description
QuadLIU V1.1
SPRBS
0
PEB 22504
2001-02