參數(shù)資料
型號： MT9076
廠商： Mitel Networks Corporation
英文描述： T1/E1/J1 3.3V Single Chip Transceiver(T1/E1/J1 3.3V 單片收發(fā)器)
中文描述： T1/E1/J1收發(fā)3.3V的單芯片收發(fā)器（T1/E1/J1收發(fā)3.3單片收發(fā)器）
文件頁數(shù)： 31/162頁
文件大?。?/td> 427K
代理商： MT9076
Preliminary Information
MT9076
27
3.3
E1 Digital Interface
PCM 30 (E1) basic frames are 256 bits long and are transmitted at a frame repetition rate of 8000 Hz, which
results in an aggregate bit rate of 256 bits x 8000/sec = 2.048 Mbits/sec. The actual bit rate is 2.048 Mbits/sec
+/-50 ppm encoded in HDB3 format. The HDB3 control bit (page 01H, address 15H, bit 5) selects either HDB3
encoding or alternate mark inversion (AMI) encoding. Basic frames are divided into 32 time slots numbered 0
to 31, see Figure 31. Each time slot is 8 bits in length and is transmitted most significant bit first (numbered bit
1). This results in a single time slot data rate of 8 bits x 8000/sec. = 64 kbits/sec.
It should be noted that the Mitel ST-BUS also has 32 channels numbered 0 to 31, but the most significant bit of
an eight bit channel is numbered bit 7 (see Mitel Application Note MSAN-126). Therefore, ST-BUS bit 7 is
synonymous with PCM 30 bit 1; bit 6 with bit 2: and so on (Figure 31).
PCM 30 time slot 0 is reserved for basic frame alignment, CRC-4 multiframe alignment and the
communication of maintenance information. In most configurations time slot 16 is reserved for either Channel
Associated signaling (CAS or ABCD bit signaling) or Common Channel signaling (CCS). The remaining 30
time slots are called channels and carry either PCM encoded voice signals or digital data. Channel alignment
and bit numbering is consistent with time slot alignment and bit numbering. However, channels are numbered 1
to 30 and relate to time slots as per Table 10.
Frame #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Ft
1
Fs
Notes Frame #
Ft
1
Fs
Notes Frame #
C
o
n
c
e
n
t
r
a
t
o
r
Ft
1
Fs
Notes
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Table 9 - SLC-96 Framing Structure(T1)
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
0
R
e
s
y
n
c
h
r
o
n
i
z
a
t
i
o
n
X
S
S = Spoiler Bits
0
0
0
0
X
S
1
1
1
0
X
C
C = Maintenance Field Bits
0
0
0
1
X
C
1
1
1
1
X
C
0
0
0
1
X
A
A = Alarm Field Bits
1
1
1
0
X
F
i
e
l
d
A
0
0
0
0
X
L
L = Line Switch Field Bits
1
1
1
0
X
L
0
0
0
1
d
a
t
a
X
B
i
t
s
L
1
1
1
1
X
L
0
0
0
1
S
S
S = Spoiler Bits
PCM 30 Timeslots
0
1,2,3...15
16
17,18,19,... 31
Voice/Data Channels
(DSTi/o and CSTi/o)
0
1,2,3...15
16
17,18,19,... 31
Table 10 - ST-BUS vs. PCM-30 to Channel Relationship(E1)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9076AB 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/E1/J1 3.3V Single Chip Transceiver
MT9076AP 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/E1/J1 3.3V Single Chip Transceiver
MT9076B 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:T1/E1/J1 3.3 V Single Chip Transceiver
MT9076BB 制造商:Zarlink Semiconductor Inc 功能描述:FRAMER E1/J1/T1 3.3V 80LQFP - Trays
MT9076BB1 制造商:Zarlink Semiconductor Inc 功能描述:FRAMER E1/J1/T1 3.3V 80LQFP - Trays
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