lxt362 Intel Corporation, lxt362 Datasheet - Page 12

• Manufacturer Part Number: lxt362
• Description: Integrated T1 Lh/sh Transceiver For Ds1/dsx-1 Or Pri Applications
• Manufacturer: Intel Corporation

LXT362 — Integrated T1 LH/SH Transceiver for DS1/DSX-1 or PRI Applications
12
1. DI = Digital Input; DO = Digital Output; DI/O = Digital Input/Output; AI = Analog Input; AO = Analog Output.
2. Midrange is a voltage level such that 2.3 V
PLCC
22
23
24
25
26
Table 3.
Pin #
QFP
29
31
32
35
36
LXT362 Signal Descriptions (Continued)
RLOOP / CS
EC3 / SDO
EC1 / INT
EC2 / SDI
Symbol
GND
DI/O
I/O
DI
DI
DI
-
Midrange
1
Ground return for power supply VCC.
HARDWARE MODES:
Equalization Control 1-3. EC1, EC2, and EC3 (along with the EC4 pin)
specify the pulse equalization, line build out and equalizer gain limit
settings. See
HOST MODES:
Interrupt. INT goes Low to flag the host when LOS, AIS, NLOOP, QRSS,
DFMS or DFMO bits changes state, or when an elastic store overflow or
underflow occurs. To identify the specific interrupt, read the Performance
Status Register (PSR). To clear or mask an interrupt, write a one to the
appropriate bit in the Interrupt Clear Register (ICR). To re-enable the
interrupt, write a zero. INT is an open drain output that must be
connected to VCC through a pull-up resistor.
Serial Data Input. SDI inputs the 16-bit serial address/command and data
word. SDI is sampled on the rising edge of SCLK. Timing is shown in
Figure 17 on page
Serial Data Output. SDO outputs the 8-bit serial data read from the
selected LXT362 register. When the CLKE pin is High, SDO is valid on the
rising edge of SCLK. When CLKE is Low, SDO is valid on the falling edge
of SCLK. SDO goes to a high-impedance state when the serial port is
being written to or when CS is High. Timing is shown in
page
HARDWARE MODES:
Remote Loopback. When held High, the clock and data inputs from the
framer (TPOS/TNEG or TDATA) are ignored and the data received from
the twisted-pair line is transmitted back onto the line at the RCLK
frequency. Connect to Midrange
detection (NLOOP).
HOST MODES:
Chip Select. CS is used to access the serial interface. For each read or
write operation, CS must transition from High to Low, and remain Low.
43.
2.7 V. Midrange may also be established by letting the pin float.
Table 10 on page 30
43.
Description
2
for details.
to enable In-band Network loopback
Figure 18 on
Datasheet