参数资料
型号: WJLXT384LEB1
厂商: CORTINA SYSTEMS INC
元件分类: 数字传输电路
英文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封装: 20 X 20MM, ROHS COMPLIANT, LQFP-144
文件页数: 99/140页
文件大小: 1514K
代理商: WJLXT384LEB1
61
Document Number: 248994
Revision Number: 005
Revision Date: November 28, 2005
Intel LXT384 Octal T1/E1/J1 S/H PCM Transceiver with JA
When the LXT384 Transceiver is in the:
Host Processor mode:
— The Global Control Register (GCR, Table 43) JASEL bits determine whether the JA is
positioned in the receive or transmit path.
— Depending on the GCR register FIFO64 bit setting, the depth of the FIFO used in the JA is
either a 32 x 2-bit FIFO or a 64 x 2-bit FIFO. (For FIFO64 bit details, see Table 43 in
— The low-limit jitter attenuator corner frequency depends on the FIFO depth and the JACF
bit setting in the GCR register. (For JACF bit details, see Table 43 in Chapter 8.0,
Hardware mode:
— The JASEL pin determines whether JA is positioned in the receive or transmit path.
— The FIFO length is fixed to 64 bits.
— The low-limit jitter attenuator corner frequency is fixed to 3.5 Hz for E1 mode, or 6 Hz for
T1 mode. (For more information on the JA corner frequency, see Table 76 in Chapter
For information on jitter attenuation as it applies specifically to the receiver, see Section 6.6, “Jitter
Standard E1 jitter-attenuation recommendations and specifications that the LXT384 Transceiver
JA meets are the following. (For more recommendations and specifications, see Chapter 15.0,
European Telecommunications Standards Institute (ETSI) publication, ETSI CTR12/13
International Telecommunication Union (ITU) publications:
—ITU-T G.736
— ITU-T G.742, when used with the SXT6234 E2-E1 mux/demux.
— ITU-T G.783, combined jitter when used with the SXT6251 21E1 mapper.
BAPT220
The LXT 384 Transceiver also supports the following T1 jitter attenuation specifications:
AT&T Pub 62411
GR-25-CORE, Category I, R5-203
TR-TSY-000009
相关PDF资料
PDF描述
WJLXT385LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
WJLXT385LEB1 DATACOM, PCM TRANSCEIVER, PQFP144
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WJLXT386LEB2 DATACOM, PCM TRANSCEIVER, PQFP100
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