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參數(shù)資料
| 型號： | DS21554LN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 49/124頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX E1 1-CHIP 5V 100-LQFP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 90 |
| 功能： | 單芯片收發(fā)器 |
| 接口： | E1，HDLC，J1，T1 |
| 電路數(shù)： | 1 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 電流 - 電源： | 75mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-LQFP |
| 供應(yīng)商設(shè)備封裝： | 100-LQFP（14x14） |
| 包裝： | 托盤 |
| 包括： | 遠程和 AIS 警報檢測器 / 發(fā)生器 |
| 產(chǎn)品目錄頁面： | 1430 (CN2011-ZH PDF) |
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DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers
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5. CONTROL, ID, AND TEST REGISTERS
The operation of the DS21354/DS21554 is configured via a set of 10 control registers. Typically, the
control registers are only accessed when the system is first powered up. Once the device has been
initialized, the control registers need only to be accessed when there is a change in the system
configuration. There are two receive control registers (RCR1 and RCR2), two transmit control registers
(TCR1 and TCR2), and six common control registers (CCR1 to CCR6). Each of the 10 registers is
described in this section.
There is a device identification register (IDR) at address 0Fh. The MSB of this read-only register is fixed
to a one, indicating that an E1 SCT is present. The next three MSBs are used to indicate which E1 device
is present—DS2154, DS21354, or DS21554. The T1 pin-for-pin compatible SCTs have a logic zero in
the MSB position with the following three MSBs indicating which T1 SCT is present—DS2152,
DS21352, or DS21552. Table 5-1 represents the possible variations of these bits and the associated SCT.
Table 5-1. Device ID Bit Map
SCT
T1/E1
BIT 6
BIT 5
BIT 4
DS2152
0
DS21352
0
1
DS21552
0
1
0
DS2154
1
0
DS21354
1
0
1
DS21554
1
0
1
0
The lower four bits of the IDR are used to display the die revision of the chip. The test registers at
addresses 09, 15, 19, and AC hex are used by the factory in testing the DS21354/DS21554. On power-up,
the test registers should be set to 00h in order for the DS21354/DS21554 to operate properly. Certain bits
of TEST3 are used to select monitor mode functions. Please see Section 15.5 for further details.
5.1.
Power-Up Sequence
On power-up, after the supplies are stable the DS21354/DS21554 should be configured for operation by
writing to all the internal registers (this includes setting the test registers to 00h) since the contents of the
internal registers cannot be predicted on power-up. The LIRST (CCR5.7) should be toggled from zero to
one to reset the line-interface circuitry (it will take the device about 40ms to recover from the LIRST bit
being toggled). Finally, after the TSYSCLK and RSYSCLK inputs are stable, the ESR bits (CCR6.0 and
CCR6.1) should be toggled from a zero to a one (this step can be skipped if the elastic stores are
disabled).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21554LN+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3/5V E1 Transceiver 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2155DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| DS2155G | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC T1/E1/J1 Transceiver 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2155G/T&R | 制造商:Maxim Integrated Products 功能描述:DS2155 T1/E1/J1 SCT 100P CSBGA T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LIU T1/E1/J1 SCT 100P CSBGA 制造商:Maxim Integrated Products 功能描述:Network Controller & Processor ICs T1/E1/J1 Transceiver |
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