- 您现在的位置：买卖IC网 > PDF目录68459 > W671310P (WINBOND ELECTRONICS CORP) TELECOM-SLIC, PQCC28 PDF资料下载
参数资料
| 型号： | W671310P |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 模拟传输电路 |
| 英文描述： | TELECOM-SLIC, PQCC28 |
| 封装： | PLASTIC, LCC-28 |
| 文件页数： | 25/48页 |
| 文件大小： | 1344K |
| 代理商： | W671310P |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页当前第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页
W671300 SERIES
7.2.6.3. AC Verification
The entire AC loop of the device is active during the Forward Loop Back mode. Therefore a 4-wire to
4-wire level test capability is provided. Depending on the transhybrid balance implementation, test
coverage is provided by a one-step or two-step process (see Figure 6).
System architectures which cannot disable the transhybrid function require a two-step process. The
first step would be to send a test tone to the device while on-hook and not in Forward Loop Back
mode. The return signal would be the test level times the gain of the transhybrid amplifier (RF/RB).
Since the device would not be terminated, cancellation would not occur. The second step would be to
program the device to Forward Loop Back mode and resend the test tone. The return signal would be
much lower in amplitude than the first step, indicating the device was active and the internal
termination attenuated the return signal.
System architectures which disable the transhybrid function can achieve test coverage with a single
step. Once the transhybrid function is disabled, program the device for Forward Loop Back mode and
send the test tone. The return signal level is determined by the 4-wire to 4-wire gain of the device.
7.2.7. TIP OPEN MODE
The Tip Open mode (110) is intended for compatibility for some PBX interfaces. Used during idle line
conditions, the device does not provide transmission. Loop supervision is provided by either the
Switch Hook Detector (E0 = 1) or the Ground Key Detector (E0 = 0). The Ground Key Detector will be
used in most applications. The device may be operated from either high or low battery.
7.2.7.1. Functionality
During Tip Open operation, the Tip switch is disabled and the Ring switch is enabled. The minimum
Tip impedance is 30k. The only active path through the device will be the Ring switch.
In keeping with the MTU characteristics of the device, Ring will not exceed -56V when operating from
the high battery. Though MTU does not apply to tip open, safety requirements are satisfied.
7.2.8. POWER DENIAL MODE
The Power Denial Mode (111) will shutdown the entire device except for the logic interface. Loop
supervision is not provided. This mode may be used as a sleep mode or to shut down in the presence
of a persistent thermal alarm. Switching between high and low battery will have no effect during Power
Denial.
7.2.8.1. Functionality
During Power Denial, both the Tip and Ring amplifiers are disabled, representing high impedances.
The voltages at both outputs are near ground.
Publication Release Date: March 2004
- 31 -
Revision 0.5
相关PDF资料 |
PDF描述 |
|---|---|
| W671340P | TELECOM-SLIC, PQCC28 |
| W671352P | TELECOM-SLIC, PQCC28 |
| W671352Y | TELECOM-SLIC, QCC32 |
| W671371P | TELECOM-SLIC, PQCC28 |
| W671371Y | TELECOM-SLIC, QCC32 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W674 | 功能描述:灯 S-8 INCND S.C. BAY RoHS:否 制造商:Chicago Miniature 灯类型:Incandescent 灯座类型:Wire Terminal 灯大小:T-1 3/4 颜色: 电压:14 V 工作电流: MSCP:0.3 MSCP 寿命:40000 hr 封装:Bulk |
| W67-A1Q1-20 | 制造商:MA-COM 制造商全称:M/A-COM Technology Solutions, Inc. 功能描述:Magnetic Hydraulic Circuit Breakers |
| W67-A1Q3-20 | 制造商:MA-COM 制造商全称:M/A-COM Technology Solutions, Inc. 功能描述:Magnetic Hydraulic Circuit Breakers |
| W67-A1Q5-20 | 制造商:MA-COM 制造商全称:M/A-COM Technology Solutions, Inc. 功能描述:Magnetic Hydraulic Circuit Breakers |
| W67-A1S1-20 | 制造商:MA-COM 制造商全称:M/A-COM Technology Solutions, Inc. 功能描述:Magnetic Hydraulic Circuit Breakers |
发布紧急采购，3分钟左右您将得到回复。