
XRT86L30
SINGLE T1/E1/J1 FRAMER/LIU COMBO
PRELIMINARY
REV. P1.0.1
84
T
ABLE
78: T
RANSMIT
C
HANNEL
C
ONTROL
R
EGISTER
0
TO
31 T1 M
ODE
R
EGISTER
60-91 T1 T
RANSMIT
C
HANNEL
C
ONTROL
R
EGISTER
0-23 (TCCR 0-23) H
EX
A
DDRESS
: 0
X
0300
TO
0
X
0317
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7-6
LAPDcntl
R/W
10
LAPD Control
These bits select which LAPD controller is to be activated.
00 = LAPD1
01 = LAPD2
10 = TxDE[1:0] will determine the data source for the D/E Time Slots
11 = LAPD3
5 - 4
TxZERO[1:0]
R/W
00
Selects type of zero suppression
These bits select the zero code suppression used.
00 = No zero code suppression is used.
01 = AT&T bit 7 stuffing is used.
10 = GTE zero code suppression is used. Bit 8 is stuffed in
non-signaling frame. Otherwise, bit 7 is stuffed in signaling
frame if the signaling bit is zero.
11 = DDS zero code suppression is applied where 0x98 replaces
the input dat
a.
3-0
TxCond(3:0)
R/W
0
Transmit Channel Conditioning for Timeslot 0 to 23
Replaces the contents of timeslot 1 octet (PCM data within the next out-
bound frame) with signaling codes as follows.
0x0 =
Contents of timeslot octet unchanged prior to transmission to
Remote Terminal Equipment. Contents are transmitted without
modification as received via the TxSer_n input pin.
0x1 =
All 8 bits of the timeslot octet are inverted (1’s complement)
prior to transmission to the Remote Terminal Equipment.
This selection is equivalent to executing the following logic
operation with each timeslot 1 octet:
TX_TIME_SLOT_OCTET=(TE_TIME_SLOT_OCTET) XOR 0xFF
0x2 =
The even bits of the timeslot octet are inverted prior to trans
mission to the Remote Terminal Equipment. This selection is
equivalent to executing the following logic operation:
TX_TIME_SLOT_OCTET=(TE_TIME_SLOT_OCTET) XOR 0xAA
0x3 =
The odd bits of the time slot octet are inverted prior to trans
mission to the Remote Terminal Equipment. This selection is
equivalent to executing the following logic operation:
TX_TIME_SLOT_OCTET=(TE_TIME_SLOT_OCTET) XOR 0x55
0x4
= The contents of the timeslot octet will be substituted with the 8
-bit value in Programmable User Code Register, prior
to transmission to the Remote Terminal Equipment.
0x5 =
The contents of the timeslot octet will be substituted with the
value 0xFF (BUSY) prior to transmission to the Remote
Terminal Equipment.
0X6 =
The contents of the timeslot octet will be substituted with the
value 0xD5 (VACANT 0V) prior to transmission to the Remote
Terminal Equipment.
0X7 =
The BUSY TS(111#_####) code replaces the input data for
transmission. (##### is Timeslot number.)
0X8 =
The BUSY 00 code replaces the input data for transmission
0X9 =
The A-Law Digital Milliwatt pattern replaces the input data for
transmission.
0XA =
The
μ
-Law Digital Milliwatt pattern replaces the input data for
transmission.
0xB
= The MSB (bit 1) of input data is inverted.
0xC
= All input data except MSB is inverted.
0xD
= PRBS, QRTS/X
15
+ X
14
+ 1.
0xE
= The input PCM data bit are unchanged.
0xF
= This is a D/E time slots. See transmit signaling and data link select
register. (TSDLSR)