XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 222

• 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

XRT84L38
OCTAL T1/E1/J1 FRAMER
See
Interface block of the framer in 12.352Mbit/s mode.
The Input signal timing is shown in
When the Transmit Multiplex Enable bit is set to one and the Transmit Interface Mode Select [1:0] bits are set to
01, the Transmit Back-plane interface of framer is running at a clock rate of 16.384MHz.
The interface consists of the following pins:
•
•
•
F
S
F
4.1.3.5
IGURE
IGURE
D
Data input (TxSer_n)
Transmit Serial Clock Input signal (TxSerClk_n)
Transmit Single-frame Synchronization Input signal (TxSync_n)
TxSerClk (12.352MHz)
TxSerClk (INV)
TxSer
TxSync(input)
ATA
Figure 35
35. I
B
36. T
US
NTERFACING
IMING
T1 Transmit Input Interface - Bit-Multiplexed 16.384Mbit/s
below for how to interface the local Terminal Equipment with the Transmit Payload Data Input
D
F
0
IAGRAM OF THE
F
0
F
Equipment
1
XRT84L38
F
Terminal
1
F
2
F
2
F
3
F
3
Figure 36
1
0
I
X 1
TO THE
NPUT
1
X
1
TxSer_0
TxInClk_0 (12.352MHz)
TxSync_0
TxSerClk_0 (1.544MHz)
TxSerClk_1 (1.544MHz)
TxSerClk_2 (1.544MHz)
TxSerClk_3 (1.544MHz)
TxSer_4
TxInClk_4 (12.352MHz)
TxSync_4
TxSerClk_4 (1.544MHz)
TxSerClk_5 (1.544MHz)
TxSerClk_6 (1.544MHz)
TxSerClk_7 (1.544MHz)
S
2
IGNALS TO THE
X
L
below when the framer is running at 12.352Mbit/s mode.
OCAL
1
3
X
2
0
T
X 2
ERMINAL
202
1
X
F
RAMER WHEN RUNNING AT
3
0
E
X
QUIPMENT USING
4
0
X
Data Input
Data Input
Transmit
Interface
Transmit
Interface
Payload
Payload
Chn 0
Chn 1
Chn 2
Chn 3
Chn 4
Chn 5
Chn 6
Chn 7
XRT84L38
5
0
A
0
5
B
1
A
IT
1
5
-M
2
A
2
ULTIPLEXED
12.352M
5
3
A
3
6
0
B
0
6
1
BIT
B
1
6
12.352M
/
2
S
B
2
M
REV. 1.0.1
6
3
ODE
B
3
BIT
/