參數(shù)資料
型號(hào)： LXT350PE
英文描述： PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|LDCC|28PIN|PLASTIC
中文描述： 的PCM收發(fā)器|單|優(yōu)稅PCM-30/E-1 |的CMOS | LDCC | 28腳|塑料
文件頁(yè)數(shù)： 13/50頁(yè)
文件大?。?/td> 1197K
代理商： LXT350PE
T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
—
LXT350
Datasheet
13
27
37
LLOOP / SCLK
DI
HARDWARE MODES:
Local Loopback
. When held High, the data on TPOS and TNEG loops back
digitally to the RPOS and RNEG outputs (through the JA if enabled).
Connecting this pin to Midrange
2
enables Analog loopback (TTIP and TRING
are looped back to RTIP and RRING).
HOST MODES:
Serial Clock
. SCLK synchronizes serial port read/write operations. The clock
frequency can be any rate up to 2.048 MHz.
28
38
TAOS / QRSS /
CLKE
DI
HARDWARE MODES:
Transmit All Ones
. When held High, the transmit data inputs are ignored and
the LXT350 transmits a stream of 1
’
s at the TCLK frequency. If TCLK is not
supplied, MCLK becomes the transmit clock reference. Note that TAOS is
inhibited during Remote loopback.
QRSS
. In
QRSS mode
, setting this pin to Midrange
2
, enables QRSS pattern
generation and detection. The transceiver transmits the QRSS pattern at the
TCLK rate (or MCLK, if TCLK is not present).
HOST MODES:
Clock Edge Select
. When CLKE is High, RPOS/RNEG or RDATA are valid on
the falling edge of RCLK, and SDO is valid on the rising edge of SCLK.
When CLKE is Low, RPOS/RNEG or RDATA are valid on the rising edge of
RCLK, and SDO is valid on the falling edge of SCLK. The operation of CLKE is
summarized in
Table 4 on page 18
.
10, 18
1, 6, 8,
9, 11,
12, 14,
17, 21,
22, 23,
26, 28,
30, 33,
34, 40,
44
n/c
-
Not Connected. Let float
Table 3. LXT350 Signal Descriptions (Continued)
Pin #
Symbol
I/O
1
Description
PLCC
QFP
1. DI = Digital Input; DO = Digital Output; DI/O = Digital Input/Output; AI = Analog Input; AO = Analog Output.
2. Midrange is a voltage level such that 2.3 V
≤
Midrange
≤
2.7 V. Midrange may also be established by letting the pin float.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LXT350QE 制造商:LEVEL1 功能描述:
LXT351 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation
LXT351PE 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|LDCC|28PIN|PLASTIC
LXT351QE 制造商:INTEL 制造商全稱(chēng):Intel Corporation 功能描述:PCM TRANSCEIVER|SINGLE|CEPT PCM-30/E-1|CMOS|QFP|44PIN|PLASTIC
LXT360 制造商:LVL1 制造商全稱(chēng):LVL1 功能描述:Integrated T1/E1 LH/SH Transceivers for DS1/DSX-1/CSU or NTU/ISDN PRI Applications
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