参数资料
| 型号： | XRT83VSH314IB |
| 厂商： | Exar Corporation |
| 文件页数： | 26/80页 |
| 文件大小： | 0K |
| 描述： | IC LIU SH T1/E1/J1 14CH 304TBGA |
| 标准包装： | 27 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 14/14 |
| 规程： | T1，E1，J1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 304-BBGA |
| 供应商设备封装： | 304-PBGA（31x31） |
| 包装： | 托盘 |
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XRT83VSH314
29
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.1
4.6.2
Arbitrary Pulse Generator For T1 and E1
The arbitrary pulse generator divides the pulse into eight individual segments. Each segment is set by a 7-Bit
binary word by programming the appropriate channel register. This allows the system designer to set the
overshoot, amplitude, and undershoot for a unique line build out. The MSB (bit 7) is a sign-bit. If the sign-bit is
set to "0", the segment will move in a positive direction relative to a flat line (zero) condition. If this sign-bit is
set to "1", the segment will move in a negative direction relative to a flat line condition. The resolution of the
DAC is typically 45mV per LSB. Thus, writing 7-bit = 1111111 will clamp the output at either voltage rail
corresponding to a maximum amplitude. A pulse with numbered segments is shown in Figure 18.
FIGURE 18. ARBITRARY PULSE SEGMENT ASSIGNMENT
NOTE: By default, the arbitrary segments are programmed to 0x00h. The transmitter outputs will result in an all zero
pattern to the line interface.
4.6.3
Setting Registers to select an Aribtrary Pulse
For T1: Address:0x0D hex
For E1: Address: 0xF4 hex, bit D0
To program the transmit output pulse, once the arbitrary pulse has been selected, write the appropriate values
into the segment registers in Table 11.
The transmit output pulse is divided into eight individual segments. Segment 1 corresponds to the beginning of
the pulse and segment 8 to end the pulse. The value for each segment can be programed individually through
a corresponding 8-bit register. In normal operation, i.e., non-arbitrary mode, codes are stored in an internal
ROM are used to generate the pulse shape, as shown in Table 11. Typical ROM values are given below in Hex.
1
2
3
4
5
6
7
8
Segment
Register
1
0xn8
2
0xn9
3
0xna
4
0xnb
5
0xnc
6
0xnd
7
0xne
8
0xnf
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT83VSH314IB-F | 功能描述:外围驱动器与原件 - PCI 14 Channel Short-Haul RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| XRT83VSH314IB-SAM | 制造商:Exar Corporation 功能描述:FOR FUJITSU ONLY |
| XRT83VSH316 | 制造商:EXAR 制造商全称:EXAR 功能描述:16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83VSH316_07 | 制造商:EXAR 制造商全称:EXAR 功能描述:16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83VSH316ES | 功能描述:外围驱动器与原件 - PCI 16 CH T1/E1LIUSH LOW COST VERSION RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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