XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 315

• Manufacturer Part Number: XRT84L38IB
• Description: Network Controller & Processor ICs 8 Ch T1/E1 Framer
• Manufacturer: Exar Corporation

Specifications of XRT84L38IB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.1
See
Interface block of the framer in Bit-multiplexed 16.384Mbit/s mode.
The Input signal timing is shown in
s mode.
When the Receive Multiplex Enable bit is set to one and the Receive Interface Mode Select [1:0] bits are set to
10, the Receive Back-plane interface of framer is running at a clock rate of 16.384MHz.
The interface consists of the following pins:
•
•
•
•
•
•
The Receive Back-plane Interface is pumping out data through RxSer_0 or RxSer_4 pins at 16.384Mbit/s. The
Receive High-speed Back-plane Interface multiplexes payload and signaling data of every four channels into
one data stream. Payload and signaling data of Channel 0-3 are multiplexed onto the Receive Serial Data pin
F
F
6.2.3.5
IGURE
IGURE
Data input (RxSer_n)
Receive Serial Clock Input signal (RxSerClk_n)
Receive Single-frame Synchronization Input signal (RxSync_n)
Receive Input Clock (RxInClk_n)
Receive Time-slot Indication clock (RxTSClk_n)
Receive Time Slot indicator bits (RxTSb[4:0]_n)
RxSerClk (16.384MHz)
RxSerClk (INV)
RxSer
RxSync(input)
Figure 93
93. I
94. T
NTERFACING
IMING SIGNAL WHEN THE FRAMER IS RUNNING AT
E1 Receive Input Interface - HMVIP 16.384Mbit/s
below for how to interface the local Terminal Equipment with the Receive Payload Data Output
F
0
F
0
Equipment
F
Terminal
1
XRT84L38
F
1
F
2
F
2
F
3
F
3
Figure 94
TO LOCAL TERMINAL EQUIPMENT USING
56 cycles
RxSerClk_4 (16.384MHz)
RxSer_4
RxMSync_4
RxSync_4
RxSerClk_0 (16.384MHz)
RxSer_0
RxMSync_0
RxSync_0
below when the framer is running at Bit-Multiplexed 16.384Mbit/
1
0
X 1
1
295
X
1
2
X
1
3
B
X
IT
2
0
-M
X 2
ULTIPLEXED
1
X
Data Input
Data Input
Interface
Interface
Receive
Receive
Payload
Chn 0-3
Payload
3
Chn 4
0
16.384 M
X
XRT84L38
16.384M
4
OCTAL T1/E1/J1 FRAMER
0
X
BIT
BIT
/
S DATA BUS
5
0
A
/
S MODE
0
5
1
A
1
XRT84L38
5
2
A
2
5
3
A
3