xrt75r03 Exar Corporation, xrt75r03 Datasheet - Page 90

• Manufacturer Part Number: xrt75r03
• Description: Xrt75r03 -multi-channel Line Interface Unit Liu Family Desynchronizer And Jitter Attenuator With R3 Technologytm
• Manufacturer: Exar Corporation

XRT75R03
REV. 1.0.8
Transmit All Ones (TAOS) can be set either in Hardware mode by pulling the TAOS_n pins “High” or in Host
mode 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 “1’s” pattern is determined by TClk_n.TAOS data path is shown in Figure 29. TAOS does
not operate in Analog loopback or Remote loopback modes. It will function in Digital loopback mode.
F
9.3
IGURE
TNDATA
TPDATA
RPOS
RNEG
RCLK
TCLK
30. T
TRANSMIT ALL ONES (TAOS):
RANSMIT
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
1
2
Transmit path
if enabled
if enabled and selected in either Receive or
HDB3/B3ZS
DECODER
HDB3/B3ZS
A
ENCODER
LL
O
NES
1
1
(TAOS)
TAOS
87
RECOVERY
CONTROL
DATA &
CLOCK
TIMING
Tx
Rx
xr
xr
xr
xr
Transmit All 1's
TTIP
TRING
RTIP
RRING