XRT83VSH28ES Exar, XRT83VSH28ES Datasheet - Page 12

• Manufacturer Part Number: XRT83VSH28ES
• Description: Peripheral Drivers & Components - PCIs 8 CH E1 LIU SH (low cost version)
• Manufacturer: Exar

Specifications of XRT83VSH28ES

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes

XRT83VSH28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
S
IGNAL
TXON0
TXON1
TXON2
TXON3
TXON4
TXON5
TXON6
TXON7
TAOS0
TAOS1
TAOS2
TAOS3
TAOS4
TAOS5
TAOS6
TAOS7
TCLK0
TCLK1
TCLK2
TCLK3
TCLK4
TCLK5
TCLK6
TCLK7
N
AME
L
BGA
EAD
A15
C14
V16
U15
A13
D12
C12
B12
V13
U13
R12
R13
B4
A3
D6
B6
A5
C6
U6
V6
R6
T3
T5
T6
#
T
YPE
I
I
I
Transmit Clock Input
TCLK is the input facility clock used to sample the incoming TPOS/TNEG data. If
TCLK is absent, pulled "Low", or pulled "High", the transmitter outputs at TTIP/
TRING sends an all zero signal to the line. TPOS/TNEG data can be sampled on
either edge of TCLK selected by TCLKE.
N
Transmit All Ones for Channel
Hardware Mode Only
Setting this pin “High” enables the transmission of an all ones pattern to the line
from TTIP/TRING. If this pin is pulled “Low”, the transmitters operate in normal
throughput mode.
N
Transmit On/Off Input
Upon power up, the transmitters are powered off. Turning the transmitters On or
Off is selected through the microprocessor interface by programming the appropri-
ate channel register while in Host mode. However, if TxONCNTL is set "High" in
the appropriate global register or if in Hardware mode, the activity of the transmitter
outputs is controlled by the TxON pins.
N
OTE
OTE
OTE
: TCLKE is a global setting that applies to all 8 channels. These pins are
: Internally pulled “Low” with a 50k resistor for all channels. This feature is
:
Internally pulled “Low” with 50k resistors.
available in Host mode by programming the appropriate channel register.
Applications Section of this datasheet for more details. Internally pulled
"Low" with a 50K resistor.
TxON is ideal for redundancy applications.
9
D
ESCRIPTION
See the Redundancy
REV. 2.0.0