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參數(shù)資料
| 型號： | XRT83SH314IB-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 93/101頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU T1/E1/J1 14CH 304TBGA |
| 標準包裝： | 27 |
| 類型： | 線路接口裝置（LIU） |
| 驅動器/接收器數(shù)： | 14/14 |
| 規(guī)程： | T1，E1，J1 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 304-BBGA |
| 供應商設備封裝： | 304-PBGA（31x31） |
| 包裝： | 托盤 |
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XRT83SH314
87
REV. 1.0.4
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
6.2.1
Clock Select Register
The input clock source is used to generate all the necessary clock references internally to the LIU. The
microprocessor timing is derived from a PLL output which is chosen by programming the Clock Select Bits in
register 0xE9h. Therefore, if the clock selection bits are being programmed, the frequency of the PLL output
will be adjusted accordingly. During this adjustment, it is important to "Not" write to any other bit location within
the same register while selecting the input/output clock frequency. For best results, register 0xE9h can be
broken down into two sub-registers with the MSB being bits D[7:4] and the LSB being bits D[3:0] as shown in
. Note: Bits D[7:6] are reserved.
FIGURE 61. REGISTER 0XE9H SUB REGISTERS
Programming Examples:
Example 1:
Changing bits D[7:4]
If bits D[7:4] are the only values within the register that will change in a WRITE process, the microprocessor
only needs to initiate ONE write operation.
Example 2:
Changing bits D[3:0]
If bits D[3:0] are the only values within the register that will change in a WRITE process, the microprocessor
only needs to initiate ONE write operation.
Example 3:
Changing bits within the MSB and LSB
In this scenario, one must initiate TWO write operations such that the MSB and LSB do not change within ONE
write cycle. It is recommended that the MSB and LSB be treated as two independent sub-registers. One can
either change the clock selection (LSB) and then change bits D[5:4] (MSB) on the SECOND write, or vice-
versa. No order or sequence is necessary.
D0
D1
D2
D3
D4
D5
D6
D7
MSB
LSB
Clock Selection Bits
ALLT1/E1, CLKCNTL
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT83SH314IB-SAK | 制造商:Exar Corporation 功能描述:14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT 制造商:EXAR 功能描述:14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83SH38 | 制造商:EXAR 制造商全稱:EXAR 功能描述:8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83SH38_0609 | 制造商:EXAR 制造商全稱:EXAR 功能描述:8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83SH38ES | 功能描述:外圍驅動器與原件 - PCI 8 CHT1/E1LIUSH RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT83SH38IB | 功能描述:外圍驅動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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