XRT83SL38ES Exar, XRT83SL38ES Datasheet - Page 19

• Manufacturer Part Number: XRT83SL38ES
• Description: Peripheral Drivers & Components - PCIs 8 CHT1/E1LIUSH
• Manufacturer: Exar

Specifications of XRT83SL38ES

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

REV. 1.0.2
ALARM FUNCTIONS/REDUNDANCY SUPPORT
S
IGNAL
GAUGE
DMO_0
DMO_1
DMO_2
DMO_3
DMO_4
DMO_5
DMO_6
DMO_7
ATAOS
µPCLK
TRATIO
RESET
SR/DR
INT
N
AME
OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
L
EAD
C15
C13
U17
V14
T13
T13
L16
L16
J18
D5
D4
R5
P4
T8
K4
#
T
YPE
O
O
I
I
I
I
I
Twisted Pair Cable Wire Gauge Select - Hardware Mode
Connect this pin “High” to select 26 Gauge wire. Connect this pin “Low” to select 22
and 24 gauge wire for all channels.
N
Driver Failure Monitor Channel _0:
This pin transitions “High” if a short circuit condition is detected in the transmit driver of
Channel _0, or no transmit output pulse is detected for more than 128 TCLK_0 cycles.
Driver Failure Monitor Channel _1
Driver Failure Monitor Channel _2
Driver Failure Monitor Channel _3
Driver Failure Monitor Channel _4
Driver Failure Monitor Channel _5
Driver Failure Monitor Channel _6
Driver Failure Monitor Channel _7
Automatic Transmit “All Ones” Pattern - Hardware Mode
A "High" level on this pin enables the automatic transmission of an "All Ones" AMI pat-
tern from the transmitter of any channel that the receiver of that channel has detected
an LOS condition. A "Low" level on this pin disables this function.
Note: All channels share the same ATAOS control function.
Microprocessor Clock Input - Host mode
SEE”MICROPROCESSOR CLOCK INPUT - HOST MODE:” ON PAGE 14.
N
Transmitter Transformer Ratio Select - Hardware mode
In external termination mode (TXTSEL = 0), setting this pin “High” selects a trans-
former ratio of 1:2 for the transmitter. A “Low” on this pin sets the transmitter trans-
former ratio to 1:2.45. In the internal termination mode the transmitter transformer
ratio is permanently set to 1:2 and the state of this pin is ignored.
Interrupt Output - Host mode
This pin is asserted “Low” to indicate an alarm condition.
PUT - HOST MODE” ON PAGE 14.
N
Hardware Reset (Active “Low”):
When this pin is tied “Low” for more than 10µs, the device is put in the reset state.
Exar recommends initiating a Hardware reset upon power up.
N
Single-Rail/Dual-Rail Data Format:
Connect this pin “Low” to select transmit and receive data format in Dual-Rail mode. In
this mode, HDB3 or B8ZS encoder and decoder are not available.
Connect this pin “High” to select single-rail data format.
N
OTE
OTE
OTE
OTE
OTE
: Internally pulled “Low” with a 50kΩ resistor.
: This pin is internally pulled “Low” for asynchronous microprocessor interface
: This pin is an open drain output and requires an external 10kΩ pull-up resistor.
: This pin is internally pulled “High” with a 50kΩ resistor.
: Internally pulled “Low” with a 50kΩ resistor.
when no clock is present.
17
D
ESCRIPTION
SEE”INTERRUPT OUT-
XRT83SL38