WJLXT384LE.B1-868635 Cortina Systems Inc, WJLXT384LE.B1-868635 Datasheet - Page 64

• Manufacturer Part Number: WJLXT384LE.B1-868635
• Manufacturer: Cortina Systems Inc

Specifications of WJLXT384LE.B1-868635

• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

LXT384 Transceiver
Datasheet
248994, Revision 6.0
30 January 2008
7.0
7.1
7.2
7.3
Table 22
Cortina Systems
Operating Mode Summary
This section discusses the following operating modes:
Interfacing with 5 V Logic
The LXT384 Transceiver can interface directly with 5 V TTL family devices. The internal
input pads can tolerate 5 V outputs from TTL and CMOS family devices.
Hardware Mode
The Hardware mode is selected when the MODE pin is connected low, which disables the
Host Processor interface. In the Hardware mode, the Host Processor interface pins have
different functions, in that they can be hard-wired to control the LXT384 Transceiver for
various operation modes and to report on the status of operations.
Hardware Mode Settings
Table 22
loopback operations.
LXT384 Transceiver Operation Mode Summary (Sheet 1 of 2)
®
Clocked
Clocked
Clocked
Clocked
Clocked
Clocked
Clocked
Clocked
Clocked
•
•
•
•
•
MCLK
LXT384 Octal T1/E1/J1 Short-Haul PCM Transceiver with Jitter Attenuation (JA)
H
Section 7.1, Interfacing with 5 V Logic
Section 7.2, Hardware Mode
Section 7.3, Hardware Mode Settings
Section 7.4, Host Processor Modes
Section 7.5, Interrupt Handling
L
L
L
L
L
L
L
lists LXT384 Transceiver hardware mode settings for receive, transmit, and
Clocked
Clocked
Clocked
Clocked
Clocked
Clocked
Clocked
TCLK
H
H
H
H
H
H
L
L
L
L
LOOP
Open
Open
Open
Open
Open
Open
H
H
H
H
H
L
L
L
L
L
X
1
Data/Clock Recovery
Data/Clock Recovery
Data/Clock Recovery
Data/Clock Recovery
Data/Clock Recovery
Data/Clock recovery
Data/Clock recovery
Data/Clock recovery
Data/Clock recovery
Receive Mode
Data Recovery
Power Down
Power Down
Power Down
Power Down
Power Down
Power Down
Power Down
Pulse Shaping OFF
Pulse Shaping OFF
Pulse Shaping OFF
Pulse Shaping ON
Pulse Shaping ON
Pulse Shaping ON
Pulse Shaping ON
Pulse Shaping ON
Pulse Shaping ON
Pulse Shaping ON
Pulse Shaping ON
Transmit All Ones
Transmit All Ones
Transmit Mode
Power down
Power down
Power down
Power down
TM
TM
7.0 Operating Mode Summary
No Remote Loopback
No Analog Loopback
Remote Loopback
Remote Loopback
Analog Loopback
No Remote Loop
No effect on op.
No effect on op.
No effect on op.
No effect on op.
No Loopback
No Loopback
No Loopback
No Loopback
No Loopback
No Loopback
No Loopback
Loopback
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