XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 38

• 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
Transmit All Ones (TAOS) can be set by setting the TAOS_n control bits to “1” in the Channel control registers.
When the TAOS is set, the Transmit Section generates and transmits a continuous AMI all “1’s” pattern on
TTIP_n and TRing_n pins. The frequency of this ones pattern is determined by TxClk_n. the TAOS data path
is shown in
function in Digital loopback mode.
F
5.3
IGURE
TxNEG
TxPOS
RxCLK
RxPOS
RxNEG
TxCLK
21. T
TRANSMIT ALL ONES (TAOS)
Figure
RANSMIT
21. TAOS does not operate in Analog loopback or Remote loopback modes, however will
HDB3/B3ZS
DECODER
HDB3/B3ZS
A
ENCODER
LL
O
NES
(TAOS)
TAOS
34
RECOVERY
CONTROL
DATA &
CLOCK
TIMING
Tx
Rx
Transmit All 1's
REV. 1.0.3
TTIP
RTIP
TRing
RRing