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參數(shù)資料
| 型號(hào)： | DS3184DK |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 395/400頁(yè) |
| 文件大小： | 0K |
| 描述： | KIT DEMO FOR DS3184 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 電信，ATM / 數(shù)據(jù)包 PHY |
| 已用 IC / 零件： | DS3184 |
| 已供物品： | 板，CD |
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DS3181/DS3182/DS3183/DS3184
94
Considerations
Select the HDLC Controller connection. The default setting connects it to the DS3/E3 Framers. Setting
PORT.CR1.HDSEL = 1 connects the HDLC Controller to the PLCP framers.
In POS-PHY mode, to select cell processing rather than packet processing, set PORT.CR2.PMCPE = 1.
For best performance of the CLAD to meet jitter requirements across the temperature range, especially @ -40 C,
the following test registers should be set after reset:
Address 0x20B = 0x11
Address 0x20F = 0x11
9.1 Monitoring and Debugging
To determine if the device is receiving a good signal and that the chip is correctly configured for its environment,
check the following status registers.
Receive Loss of Lock – PORT.SR.RLOL – The clock recovery circuit of the LIU was unable to recover the clock
from the incoming signal. This may indicate that the LIU’s master clock does not match the frequency of the
incoming signal. Verify that the CLAD is configured to match the clock input on the CLKA, CLKB, and CLKC pins
(DS3, E3, STS-1). See Table 10-11.
Loss of Signal – LINE.RSR.LOS – This indicates that the LIU is unable to recover the clock and data because there
is no signal on the line, or that the signal is attenuated beyond recovery.
Loss of Frame – T3.RSR1.LOF (or E3751.RSR1 or E3832.RSR1) – This indicates that the framer was unable to
synchronize to the incoming data. Verify that the FM bits have been correctly configured for the correct mode of
traffic (DS3, E3 G.751, E3 G.832)
Other helpful techniques diagnose a problem include using Line Loopback and Diagnostic Loopback. These
features help to isolate and identify the source of the problem. Line Loopback will loop the receive input to the
transmit output, eliminating the transmit side input from the equation. Diagnostic Loopback will loop the transmit
output before the LIU to the receive framer, eliminating the analog Receive LIU and the receive side analog
circuitry.
One other potential problem is the Line Encoding/Decoding. The device needs to be configured in the same mode
as the far end piece of equipment. If the far end piece of equipment is transmitting and receiving HDB3/B3ZS
encoded data, the DS318x also must be configured to do the same. This is controlled by the LINE.TCR.TZSD and
the LINE.RCR.RZSD bits.
9.1.1 Cell/Packet FIFO
Check the status registers of the FIFO block. Common indicators to check would be the Transmit Underflow,
Transmit Overflow, and Receive Overflow status bits. These status bits are located in the FIFO.TSRL Register and
the FIFO.RSRL Register.
A Transmit Underflow indicates that the transmit cell processor or packet processor has attempted a read while
the FIFO was empty.
A Transmit Overflow indicates that either a start of cell or a start of packet or a short packet was received when the
FIFO was full. Additionally, if additional packet data is received when the FIFO is already full, it will result in an
abort status for the current packet and the Transmit Overflow being declared.
A Receive Overflow occurs when cell data is received while the FIFO is full. In a packet system, the overflow will be
declared when a start of packet or a short packet is received or packet data is received when the FIFO is full
resulting in an abort status for the current packet and the Receive Overflow being declared.
9.1.2 Cell Processor
Monitoring the Loss of Cell Delineation in the Cell Processor is recommended to insure proper operation. The LCD
status bit is located in the CP.RSR Register and indicates when an Out of Cell Delineation persists for a
programmed number of cells (set in the CP.RLTC Register).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS3184N | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad ATM/Packet PHYs w/Built-In LIU 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 |
| DS3184N+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad ATM/Packet PHYs w/Built-In LIU 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 |
| DS318PIN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
| DS-318PIN | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Plug-In Two-Way Power Divider, 5 - 500 MHz |
| DS-318-PIN | 功能描述:信號(hào)調(diào)節(jié) RoHS:否 制造商:EPCOS 產(chǎn)品:Duplexers 頻率:782 MHz, 751 MHz 頻率范圍: 電壓額定值: 帶寬: 阻抗:50 Ohms 端接類型:SMD/SMT 封裝 / 箱體:2.5 mm x 2 mm 工作溫度范圍:- 30 C to + 85 C 封裝:Reel |
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