XRT73LC04A Datasheet, PDF(57/64 Page) Exar Corporation – 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

XRT73LC04A Datasheet, PDF (57/64 Pages) Exar Corporation – 4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

◁

XRT73LC04A

4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

REV. 1.0.1

TABLE 7: HEXADECIMAL ADDRESSES AND BIT FORMATS OF XRT73LC04A COMMAND REGISTERS

ADDRESS

COMMAND

TYPE

CHANNEL 3

0x18

CR0-3

RLOL_3

RLOS_3

ALOS_3

DLOS_3

DMO_3

0x19

CR1-3

R/W

TxOFF_3

TAOS_3

TxClkINV_3 TxLEV_3 Reserved

0x1A

CR2-3

R/W

Reserved

ALOSDIS_3 DLOSDIS_3 REQEN_3

0x1B

CR3-3

R/W

SR/DR_3 LOSMUT_3

RxOFF RxClk_3INV Reserved

0x1C

CR4-3

R/W

Reserved STS-1/DS3_3

E3_3

LLB_3

RLB_3

0x1D

CR5-3

R/W

Reserved

Reserved Reserved Reserved

0x1E

CR6-3

R/W

Reserved

Reserved Reserved Reserved

0x1F

CR7-3

R/W

Reserved

Reserved Reserved Reserved

Address

The register addresses are presented in the Hexa-

decimal format.

Type:

The Command Registers are either Read-Only (RO)

type of registers or Read/Write (R/W) type of regis-

ters. Each channel of the XRT73LC04A has eight

command registers, CR0-(n) through CR7-(n) where

(n) = 0, 1, 2 or 3. The associated addresses for each

channel are presented in , (repeated as Table 7).

NOTE: The default value for each of the bit-fields within

these register is "0".

5.2 DESCRIPTION OF BIT-FIELDS FOR EACH COM-

MAND REGISTER

5.2.1 Command Register - CR0-(n)

The bit-format and default values for Command Reg-

ister CR0-(n) are listed below followed by the function

of each of these bit-fields.

COMMAND REGISTER CR0-(n)

RLOL_(n) RLOS_(n) ALOS_(n) DLOS_(n) DMO_(n)

Bit D4 - RLOL_(n) (Receive Loss of Lock Status -

Channel(n))

This Read-Only bit-field reflects the lock status of the

Channel(n) Clock Recovery Phase-Locked-Loop

This bit-field is set to â0â if the Channel(n) Clock Re-

covery PLL is in lock with the incoming line signal.

This bit-field is set to "1" if the Clock Recovery PLL is

out of lock with the incoming line signal.

Bit D3 - RLOS_(n) (Receive Loss of Signal Status -

Channel(n))

This Read-Only bit-field indicates whether or not the

Channel(n) of the Receiver is currently declaring an

LOS (Loss of Signal) Condition.

This bit-field is set to "0" if Channel(n) is not currently

declaring the LOS Condition.

This bit-field is set to "1" if Channel(n) is declaring an

LOS Condition.

Bit D2 - ALOS_(n) (Analog Loss of Signal Status -

Channel(n))

This Read-Only bit-field indicates whether or not the

Channel(n) Analog LOS Detector is currently declar-

ing an LOS condition.

This bit-field is set to "0" if the Analog LOS Detector

within Channel(n) is NOT currently declaring an LOS

condition. This bit-field is set to "1" if the Analog LOS

Detector is currently declaring an LOS condition.

NOTE: The purpose is to isolate the Detector (e.g., either

the Analog LOS or the Digital LOS detector) that is declar-

ing the LOS condition. This feature may be useful for trou-

bleshooting/debugging purposes

Bit D1 - DLOS_(n) (Digital Loss of Signal Status -

Channel(n))

This Read-Only bit-field indicates whether or not the

Channel(n) Digital LOS Detector is currently declar-

ing an LOS condition.

This bit-field is set to "0" if the Channel(n) Digital LOS

Detector is NOT currently declaring an LOS condi-

▷