XRT86L30
SINGLE T1/E1/J1 FRAMER/LIU COMBO
4.12 High-Speed Non-Multiplexed Interface
REV. 1.0.1
The speed of transferring data through a back plane interface in a non-multiplexed manner typically operates
at 1.544Mbps, 2.048Mbps, 4.096Mbps, or 8.192Mbps. For 12.352Mbps and 16.384Mbps, see the High-Speed
Multiplexed Section. The T1/E1 carrier signal out to or in from the line interface is always 1.544MHz and
2.048MHz respectively. However, the back plane interface may be synchronous to a “Higher” speed clock.
For T1, as shown in Figure 23, is mapped into an E1 frame. Therefore, every fourth time slot contains non-
valid data. For E1, as shown in Figure 24, is simply synchronized to the “Higher” 8.192MHz clock signal
supplied to the TxMSYNC input pin.
F
IGURE 23. T1 HIGH-SPEED NON-MULTIPLEXED INTERFACE
Non-Multiplexed High Speed Interface (2.048MHz/4.096MHz/8.192MHz)
TxMSYNC
2.048MHz
TxSER
F
Don't Care
Don't Care
TS 1
TS 2
TS 3
TS 4
TS 5
TxSERCLK
(1.544MHz)
TxSYNC
F
IGURE 24. E1 HIGH-SPEED
N
ON-MULTIPLEXED
INTERFACE
Non-Multiplexed High Speed Interface (2.048MHz/4.096MHz/8.192MHz)
TxMSYNC
(8.192MHz)
TxSER
TS 1
TS 2
TS 3
TxSERCLK
(2.048MHz)
TxSYNC
155
EXAR [ EXAR CORPORATION ]
