PEF 22508 E V1.1-G Infineon Technologies, PEF 22508 E V1.1-G Datasheet - Page 60

• Manufacturer Part Number: PEF 22508 E V1.1-G
• Description: IC INTERFACE E1/T1/J1 LBGA-256
• Manufacturer: Infineon Technologies
• Series: OctalLIU™r

Specifications of PEF 22508 E V1.1-G

• Function: Line Interface Unit (LIU)
• Interface: E1, J1, T1
• Number Of Circuits: 8
• Voltage - Supply: 1.8V, 3.3V
• Current - Supply: 370mA
• Power (watts): 140mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 256-LSBGA
• Includes: Automatic Protection Switching, Clock Generation, Power-Down, Transmit Line Monitor, Tristate Function
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: PEF22508EV1.1T; PEF22508EV11GXP; SP000029953

An overview about the tristate configurations of RDOP and RCLK is given in
Table 15
DIC3.RRTRI /
DIC3.RRTRI exor RTDMT
if RTDMT is selected on
multi function port
1
0
0
Switching between both channels can be done on the line side in transmit direction by a hardware signal if the
multi function pin XPA is configured as tristate input XLT by the register bits PC1.XPC1 = ´1000
pin XPA is programmed as low active (PC1.XPC1 = ´1110
(PC1.XPC1 = ´1000
channels on line side is possible using only one signal.
Switching can also be done on the line side in transmit direction by software, if setting the register bit XPM2.XLT.
The register bit value XPM2.XLT and the pin value of XPA are logically OR´d. (That means if XPA is configured
as low active then tristate = XPM2.XLT or not(XPA).
Because the register bit XPM2.XLT and the multi function pin XPA exist individually for every channel, switching
on the line side in transmit direction can be done between channels of different or of the same OctalLIU
Switching between both channels can be done on the system side in receive direction by using the register bit
DIC3.RRTRI and with or without selection of the multi function port as RTDMT. If the RTDMT function is selected
the values of RTDMT and DIC3.RRTRI are logically exored. If in one of the both channels DIC3.RRTRI is set,
RTDMT is low active because of the logical exor, and if in the other channel DIC3.RRTRI is cleared, RTDMT is
low active because of the logical exor. So switching between both channels on system (framer) side in receive
direction is possible using only one signal.
By using the XLT, XLT and RTDMT function of the multi function ports and do the appropriate programming of the
bits DIC3.RRTRI (DIC3), switching between both channels can be done on the system and the line side together
with only one common signal, connected to XPA (XLT, XLT) and RPA (RTDMT), as shown in
Table
is in stand-by and channel 2 is active.
Table 16
Configuration
XLT, XLT
RTDMT
Receive system interface
RLM mode
Figure 22
configuration shown in
is connected to XLT, XLT, RLT and RTDMT. Because the OctalLIU
and LIM0.RTRS, the analog switches of both channels are controlled by these signal.
Data Sheet
16: If this signal has low-level channel 1 is active and channel 2 is in stand-by, if it has high level channel 1
shows a redundancy application for long haul mode using the internal analog switch. With the
Tristate Configurations for the RDO and RCLK pins
Redundancy Application using RLM, switching with only one signal
B
´), no external inverter is necessary as shown in
Table
X
0
1
PC1.XPC1(3:0)
PC1.RPC1(3:0)
DIC3.RRTRI
LIM0.RLM
17, switching between both channels is possible using only one board signal which
Register Bits
DIC3.RTRI
60
Constant tristate (without
pull up and pull down
resistor)
Never tristate
Tristate during inactive
channel phases (with pull
up resistor
1000
1101
0
0
B
´) and the one of the other channel as high active
Pin RDOP
Channel 1
(active)
TM
builds the logical equivalence out of RLT
Figure
Table
21. So switching between both
15.
Constant tristate (without
pull up and pull down
resistor)
Never tristate
Never tristate
1110
1101
1
1
Functional Description
Rev. 1.0, 2005-06-02
Pin FCLKX
Channel 2
(stand-by)
B
´, see PC1. If one
PEF 22508 E
Figure 21
OctalLIU
TM
device
and
TM