lxt351 Intel Corporation, lxt351 Datasheet - Page 26

• Manufacturer Part Number: lxt351
• Description: T1/e1 Short Haul Transceiver With Crystal-less Jitter Attenuation
• Manufacturer: Intel Corporation

LXT351 — T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
26
1. To enable Dual loopback (DLOOP), set both ERLOOP = 1 and ELLOOP = 1.
1. Leaving a 1 of in any of these bits masks the associated interrupt.
Bit
Bit
Bit
0
1
2
3
4
5
6
7
4
5
6
7
0
1
2
3
4
Table 9.
Table 10. Control Register #3 Read/Write, Address (A7-A0) = x010010x
Table 11. Interrupt Clear Register Read/Write, Address (A7-A0) = x010011x
EQZMON
ETAOS
RESET
EPAT0
EPAT1
Name
ESCEN
ESJAM
JA6HZ
SBIST
Name
ES64
CQRSS
Name
CLOS
CAIS
-
-
-
-
Control Register #2 Read/Write, Address (A7-A0) = x010001x
1 = Enable Transmit All Ones
0 = Disable Transmit All Ones
Selects internal data pattern transmission. See
right hand section of table for codes.
1 = Reset device states and clear all registers.
0 = Reset complete.
1 = Disable jamming of Elastic Store read out clock (
0 = Enable jamming of Elastic Store read out clock
1 = Center ES pointer for a difference of 16 or 32, depending on depth (clears automatically).
0 = Centering completed
1 = Set elastic store depth to 64 bits.
0 = Set elastic store depth to 32 bits.
Reserved. Set to 0 for normal operation.
1 = Configure receiver equalizer for monitor mode application (DSX-1 monitor).
0 = Configure receiver equalizer for normal mode application
1 = Start Built-In Self Test.
0 = Built-In Self Test complete.
Reserved. Set to 0 for normal operation.
1 = Set bandwidth of jitter attenuation loop to 6 Hz.
0 = Set bandwidth of jitter attenuation loop to 3 Hz.
1 = Clear/Mask Loss of Signal interrupt.
0 = Enable Loss of Signal interrupt.
Reserved. Set to 1 for normal operation.
1 = Clear/Mask Alarm Indication Signal interrupt.
0 = Enable Alarm Indication Signal interrupt.
1 = Clear/Mask Quasi-Random Signal Source interrupt.
0 = Enable Quasi-Random Signal Source interrupt.
Reserved. Set to 1 for normal operation.
Function
Ñ
Description
Function
EPAT0
1
/
8
bit-time adjustment for over/underflow).
1
EPAT1
Pattern
Selected
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