參數(shù)資料
型號(hào)： XRT83L34
廠商： Exar Corporation
英文描述： QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
中文描述： 四T1/E1/J1收發(fā)左/上海收發(fā)器和時(shí)鐘恢復(fù)和抖動(dòng)衰減器
文件頁(yè)數(shù)： 66/82頁(yè)
文件大?。?/td> 447K
代理商： XRT83L34
XRT83L34
QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
PRELIMINARY
REV. P1.3.4
63
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 and
the Master Clock Rate in register 0x41h. Therefore, if the clock selection bits or the MCLRATE bit 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, when bits D[6:3] are being changed, the other bits D[7] and D[2:0] as shown in
Figure 25. should retain their previous values.
F
IGURE
25. R
EGISTER
0
X
81
H
S
UB
R
EGISTERS
Programming Examples:
Example 1: Changing bits D[6:3]
If bits D[6:3] 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[7] and D[2:0]
If bits D[7] and D[2:0] 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 D[6:3] and the other bits
In this scenario, one must initiate TWO write operations such that bits D[6:3] and the other bits do not change
within ONE write cycle. It is recommended that bits D[6:0] and the other bits be treated as two independent
sub-registers. One can either change the clock selection bits and then change bits D[7] and D[2:0] on the
SECOND write, or vice-versa. No order or sequence is necessary.
D0
D1
D2
D3
D4
D5
D6
D7
Clock Selection Bits
ExLOS, ICT
E1arben
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT83L34_05 制造商:EXAR 制造商全稱:EXAR 功能描述:QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
XRT83L34ES 功能描述:外圍驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
XRT83L34IV 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT83L34IV-F 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
XRT83L34IVTR 功能描述:外圍驅(qū)動(dòng)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(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
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