XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 122

• Manufacturer Part Number: XRT75R12DIB-F
• Description: Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
• Manufacturer: Exar Corporation

Specifications of XRT75R12DIB-F

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V to 5 V
• Package / Case: TBGA-420
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT75R12D
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
The user can accomplish this by executing of the following step.
Then the user should clear Bit D2 (JA1) to "0" and set Bit D0 (JA0) to "1", within the Jitter Attenuator Control
Register, as depicted below.
Once the user accomplishes this step, then the Jitter Attenuator (within the LIU) will be configured to operate
with a very narrow bandwidth.
The user can accomplish this by executing the following step.
Then the user should set Bit D1 (JATx/JARx*) to "1", within the Jitter Attenuator Control Register, as depicted
below.
Finally, if the user intends to use the LIU in an Application that is required to reacquire proper SONET and DS3
traffic, prior within 50ms of an APS (Automatic Protection Switching) event (per Telcordia GR-253-CORE), then
the user should clear Bit 4 (SONET APS Recovery Time Disable), within the "Jitter Attenuator Control"
Register, to "0" as depicted below.
d. Configure the Jitter Attenuator (within each of the channels) to operate in the Transmit Direction.
c. Configure each of the channels within the LIU to operate in the SONET De-Sync Mode
e. Enable the "SONET APS Recovery Time" Mode
If the LIU has been configured to operate in the Host Mode
If the LIU has been configured to operate in the Host Mode.
B
B
R/O
R/O
IT
IT
0
0
7
7
T
T
ABLE
ABLE
47: J
48: J
Unused
Unused
B
B
R/O
R/O
IT
IT
0
0
ITTER
ITTER
6
6
A
A
TTENUATOR
TTENUATOR
B
B
R/O
R/O
IT
IT
0
0
5
5
C
C
ONTROL
SONET APS
DisableCh_n
ONTROL
SONET APS
DisableCh_n
(
(
M
M
Recovery
Recovery
= 0-5 & 8-D) (
= 0-5 & 8-D) (
B
B
Time
Time
R/W
R/W
IT
IT
0
0
4
4
R
R
EGISTER
EGISTER
118
JA RESET
JA RESET
N
N
= [0:11])
B
Ch_n
= [0:11])
B
Ch_n
R/W
R/W
- C
- C
IT
IT
0
0
3
3
HANNEL N
HANNEL N
JA1 Ch_n
JA1 Ch_n
, A
, A
B
B
R/W
R/W
IT
IT
0
0
DDRESS
DDRESS
2
2
JA in Tx Path
JA in Tx Path
L
L
OCATION
OCATION
Ch_n
Ch_n
B
B
R/W
R/W
IT
IT
0
1
1
1
; 0
; 0
XM
XM
JA0 Ch_n
JA0 Ch_n
7
7
REV. 1.0.3
B
B
R/W
R/W
IT
IT
1
1
0
0