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參數(shù)資料
| 型號(hào)： | SAB82525N |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 4M bps, MULTI PROTOCOL CONTROLLER, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁(yè)數(shù)： | 80/126頁(yè) |
| 文件大小： | 730K |
| 代理商： | SAB82525N |
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Semiconductor Group
57
SAB 82525
SAB 82526
SAF 82525
SAF 82526
Normally 33 pF capacitors are used for frequencies below 10 MHz and 22 pF capacitors are
used for frequencies above 10 MHz.
To guarantee oscillation use the capacitances which are specified by the crystal manufacturer.
ITS01450
RxCLKA
AxCLKA
5.2 Clock Recovery (DPLL)
The HSCX offers the advantage of recovering the receive clock from the receive data by
means of internal DPLL circuitry, thus eliminating the need to transfer additional clock
information via the serial link.
For this purpose, the DPLL is supplied with a reference clock from BRG which is 16 times the
data clock rate (clock mode 2, 3, 6, 7). Additionally, the transmit clock may be obtained dividing
the output of the BRG by a constant factor of 16 (clock mode 2, 6; TSS bit in CCR2 set) or also
directly from the DPLL (clock mode 3, 7).
Figure 28a
The DPLL circuits implemented in the HSCX are optimized with respect to the HDLC protocol.
The main task of the DPLL is to derive a receive clock and to adjust its phase to the incoming
data stream in order to enable the bit sampling in the middle of a bit-cell with the falling edge
of the receive clock. For this purpose, edges in the receive data, indicating the begin of a bit-
cell, are necessary.
When using the NRZI encoding, the zero insert/zero delete method ensures that a sufficient
number of edges occur in the data stream during the reception of an HDLC frame. Furthermore
a completely new "one insertion" mechanism has been implemented with the HSCX, which
also guarantees sufficient number of edges when using NRZ encoding (especially for bus
configurations, see chapter 6.5 for details).
ITT06028
Interference Rejection
RxD
DPLL CLK
1
Rec. Data
1
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| SAB82C171-35-P | PALETTE-DAC DSPL CTLR, PDIP28 |
| SAB82C176-40-P | PALETTE-DAC DSPL CTLR, PDIP28 |
| SAB82C206-N | MULTIFUNCTION PERIPHERAL, PQCC84 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAB82525N-V2.1 | 制造商:Siemens 功能描述:82525N-V2.1 |
| SAB82525NV2.1GHSCX | 制造商:Infineon Technologies AG 功能描述: |
| SAB82525N-V2.1GHSCX | 制造商:Infineon Technologies AG 功能描述: |
| SAB82525NV2.1HSCX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAB82525NV2.2 | 功能描述:輸入/輸出控制器接口集成電路 T/E RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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