TXC-02050CIPL ETC1 [List of Unclassifed Manufacturers], TXC-02050CIPL Datasheet - Page 9

• Manufacturer Part Number: TXC-02050CIPL
• Description: MRT Device 6-,8-,34-Mbit Line Interface TXC-0250C
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

Note 2: For 6 Mbit/s operation, setting the equalizer for long cable length while having a short cable will cause an error in
Note 1: Setting LBKTX and LBKRX low simultaneously will cause invalid outputs at the receive terminal and transmit line
Symbol
LBKRX
LBKTX
TXAIS
EQB1
EQB0
LOW
the recovered clock frequency. The recovered clock frequency will not be 6.312 MHz.
ports.
Proprietary TranSwitch Corporation Information for use Solely by its Customers
Pin No.
24
25
26
27
28
43
I/O/P
I
I
I
I
I
I
CMOSr
CMOSr
CMOSr
CMOSr
CMOSr
Type
DATA SHEET
- 9 of 36 -
Loopback Receive: When LBKRX is low, the MRT
loops back receive data as transmit data. The receive
data is also sent to the terminal side, but the transmit
data input on the terminal side is disabled (see Note 1).
Loopback Transmit: When LBKTX is low, the MRT
loops back transmit data as receive data. The transmit
data is sent on the line side, but the receive data input
on the line side is disabled (see Note 1).
Low Frequency: When LOW is low, the MRT enables
equalization and input attenuator settings for 6312 or
8448 kbit/s operation. When LOW is high, the settings
for 34368 kbit/s operation are enabled. This lead also
controls the clock recovery high/low frequency range cir-
cuit.
Equalizer Bit 1: MSB of equalizer setting.
Equalizer Bit 0: LSB of equalizer setting.
The equalizer setting depends on cable length
(attenuation) as shown in the following tables.
For 34 Mbit/s operation:
EQB1
For 8 Mbit/s operation:
For 6 Mbit/s operation (see Note 2):
* f = 1/2 the bit rate
Transmit AIS: When TXAIS is low, the MRT sends an
AIS (all ones signal) for the line side transmit output
data. The terminal side transmit data path is disabled.
The reference clock (DCK) provides the clock required
for generating AIS. equivalent
1
0
1
1
0
0
1
1
1
0
EQB0
0
0
0
1
0
0
1
1
1
0
3.0dB < cable < 6.5dB
3.6dB < cable < 6.8dB
Cable Attenuation @ f *
2.4dB < cable < 5.1dB
0dB < cable < 5.7dB
4.1dB < cable < 12dB
5.7dB < cable < 14dB
6.8dB < cable <14 dB
0dB < cable < 3.5dB
0dB < cable < 2.4dB
3.1dB < cable < 6.0dB
Name/Function
TXC-02050C
ATT 734A Cable
ATT 734A Cable
TXC-02050C-MB
Ed. 1, May 2002
400 - 1150 ft.
550 - 1350 ft.
650 - 1350 ft.
Equivalent
500 - 1100 ft.
700 - 1350 ft.
500 - 1100 ft.
700 - 1350 ft
0 - 550 ft.
Equivalent
0 - 550 ft.
0 - 550 ft.
MRT