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參數(shù)資料
| 型號(hào)： | LXT351QE |
| 廠商： | INTEL CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|QFP|44PIN|PLASTIC |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁(yè)數(shù)： | 9/46頁(yè) |
| 文件大?。?/td> | 1132K |
| 代理商： | LXT351QE |
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T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
—
LXT351
Datasheet
9
1.1
Mode Dependent Signals
As shown in
Figure 2
, the LXT351 has several pins that change function (and signal name)
according to the selected mode(s) of operation. These pins, associated signal names, and operating
modes are summarized in
Table 1
and
Table 2
. LXT351 signals are described in
Table 3
.
Table 1. LXT351 Clock and Data Pin Assignments by Mode
1
Pin #
External Data Modes
QRSS Modes
PLCC
QFP
Bipolar Mode
Unipolar Mode
Bipolar Mode
Unipolar Mode
1
39
MCLK
2
41
TCLK
3
42
TPOS
TDATA
INSLER
4
43
TNEG
INSBPV
INSBPV
6
3
RNEG
BPV
RNEG
BPV
7
4
RPOS
RDATA
RPOS
RDATA
8
5
RCLK
13
15
TTIP
16
19
TRING
19
24
RTIP
20
25
RRING
1. Data pins change based on whether external data or internal QRSS mode is active.
Table 2. LXT351 Processor Interface Pins
Pin #
Address/Data Bus Type
Pin #
Address/Data Bus Type
PLCC
QFP
Intel
Motorola
PLCC
QFP
Intel
Motorola
5
2
ALE
AS
25
35
AD2
9
7
RD
DS
26
36
AD3
12
13
WR
R/W
27
37
AD4
17
20
CS
28
38
AD5
18
21
INT
10
9
AD6
23
31
AD0
11
10
AD7
24
32
AD1
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