XRT83SL38ES Exar, XRT83SL38ES Datasheet - Page 56

• 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

XRT83SL38
OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
R
EGISTER
00000010
00010010
00100010
00110010
01000010
01010010
01100010
01110010
B
D7
D6
D5
IT
A
#
DDRESS
INVQRSS_n Invert QRSS Pattern: When TQRSS is active, Writing a “1” to
TXTEST2_n Transmit Test Pattern bit 2 : This bit together with TXTEST1
TXTEST1_n Transmit Test pattern bit 1: See description of bit D6 for the
C
C
C
C
C
C
C
C
C
HANNEL
HANNEL
HANNEL
HANNEL
HANNEL
HANNEL
HANNEL
HANNEL
HANNEL
N
AME
T
ABLE
_n
_0
_1
_2
_3
_4
_5
_6
_7
21: M
this bit inverts the polarity of transmitted QRSS pattern. Writing
a “0” sends the QRSS pattern with no inversion.
and TXTEST0 are used to generate and transmit test patterns
according to the following table:
TDQRSS (Transmit/Detect Quasi-Random Signal): This
condition when activated enables Quasi-Random Signal
Source generation and detection for the selected channel
number n. In a T1 system QRSS pattern is a 2
random bit sequence (PRBS) with no more than 14 consecu-
tive zeros. In a E1 system, QRSS is a 2
TAOS (Transmit All Ones): Activating this condition enables
the transmission of an All Ones Pattern from the selected
channel number n.
TLUC (Transmit Network Loop-Up Code): Activating this
condition enables the Network Loop-Up Code of “00001” to be
transmitted to the line for the selected channel number n.
When Network Loop-Up code is being transmitted, the
XRT83SL38 will ignore the Automatic Loop-Code detection
and Remote Loop-Back activation (NLCDE1 =“1”, NLCDE0
=“1”, if activated) in order to avoid activating Remote Digital
Loop-Back automatically when the remote terminal responds
to the Loop-Back request.
TLDC (Transmit Network Loop-Down Code): Activating this
condition enables the network Loop-Down Code of “001” to be
transmitted to the line for the selected channel number n.
function of this bit.
TXTEST2
ICROPROCESSOR
0
1
1
1
1
TXTEST1
X
0
0
1
1
54
R
EGISTER
F
UNCTION
TXTEST0
#2, B
X
0
1
0
1
15
IT
-1 PRBS pattern.
D
Test Pattern
ESCRIPTION
No Pattern
20
TDQRSS
TAOS
-1 pseudo-
TLUC
TLDC
R
EGISTER
T
R/W
R/W
R/W
YPE
REV. 1.0.2
R
V
ALUE
ESET
0
0
0