參數(shù)資料
型號(hào): MT9072AV
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 數(shù)字傳輸電路
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: DATACOM, FRAMER, PBGA220
封裝: 17 X 17 MM, 1.30 MM HEIGHT, MO-192, LBGA-220
文件頁(yè)數(shù): 118/275頁(yè)
文件大小: 3738K
代理商: MT9072AV
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MT9072
Data Sheet
118
Zarlink Semiconductor Inc.
Bit
Name
Functional Description
15-12
#
not used.
11-10
RZCS1-0
(00)
Receive Zero Code Suppression
.
00: No Zero Code Suppression.
01: GTE Zero Code Suppression 00000001 of an byte is detected and replaced by a
00000000
10: DDS Zero Code Suppression.10011000 is detected as a zero byte and replaced by
00000000.
11: Bell Zero Code Suppression (Bit 7,00000010) is detected as a zero byte and replaced by
a zero byte.
These suppression detection codes only apply to the receiver.
Note that the bit designations are with respect to the PCM24 side where bit 1 is sent and
received first.
9-7
TZCS2-0
(000)
Transmit Zero Code Suppression
.
000: No Zero Code Suppression.
001: GTE Zero Code Suppression. Bit 8 of an all zero channel byte is replaced by a one,
except in signaling frames where bit 7 is forced to a one.
010: DDS Zero Code Suppression. An all zero byte is replaced by 10011000.
011: Bell Zero Code Suppression. Bit 7 of an all zero channel is replaced by a 00000010,
100: "Jammed bit 8". Bit 8 of all channels are replaced by a 1.
These suppression codes only apply to the transmitter. Note that if a suppression code is
enabled for a channel the B8ZS coding will not take place for the channel. Although 8
consecutive zeros in a non channel boundary will be subjected to B8ZS suppression.
Note that the bit designations are with respect to the PCM24 side where bit 1 is sent and
received first.
6
TPDV
(0)
Transmit PDV
. The output of the T1 data to be sent is monitored over a T1 frame and if the
density is less than 12.5% a bit is added, in the non-framing bit.
5
TXB8ZS
(0)
Transmit Bipolar Eight Zero Substitution.
If set all zero octets in the transmit path are
substituted with B8ZS codes.
4
RXB8ZS
(0)
Receive Bipolar Eight Zero Substitution
. If set B8ZS code words in the receive path are
substituted with all zero octets. Bipolar violations assosciated with incoming B8ZS words will
not be counted by the Bipolar Violation Error Counter.
3
ADSEQ
(0)
Digital Milliwatt or Digital Test Sequence.
If one, the Mulaw digital milliwatt analog test
sequence will be selected for those channels with per timeslot control bits TTST, RRST set. If
zero, a PRBS generator / detector will be connected to channels with TTST, RRST set.
2
RZNRZ
(0)
Return to zero Non Return to zero.
If one return to zero inputs and outputs are expected at
the T1 interface. If zero, Non return to zero input and output are expected. RZ mode is only
supported for bipolar input.
1
UNIBI
(0)
Unipolar/Bipolar.
If one the input and output at the T1 interface is assumed to be unipolar.
The stream RPOS is the input and TPOS is the output. Setting this bit low causes the
MT9072 to accept complementary bipolar inputs on RPOS/RNEG and to transmit
complementary outputs on TPOS/TNEG.
0
CLKE
(0)
Clock Edge.
If one then the NRZ data(RPOS/RNEG) is sampled on the rising edge and
transmitted on the falling edge of TXCL. If this bit is 0, then the opposite edges are used.This
selection is only applicable in NRZ mode.
Table 64 - Line Interface and Coding Word(Y01) (T1)
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