參數(shù)資料
型號： DS21349Q+
廠商： Maxim Integrated Products
文件頁數(shù)： 15/35頁
文件大小： 0K
描述： IC LIU T1/J1 3.3V 28-PLCC
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 37
類型： 線路接口裝置（LIU）
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 28-LCC（J 形引線）
供應商設備封裝： 28-PLCC（11.51x11.51）
包裝： 管件
DS21349
22 of 35
10. DIAGNOSTIC MODE OPERATION
The DS21349 offers several diagnostic modes as listed in Table 10-A. Various diagnostic modes are only
available in software mode. In hardware mode, the diagnostic modes are selected by a combination of pin
settings. In software mode, the diagnostic modes are selected by setting appropriate bits in the diagnostic
control register.
Table 10-A. Diagnostic Modes
AVAILABILITY
SOFTWARE MODE
DIAGNOSTIC MODE
HARDWARE
SOFTWARE
MASKABLE
Local Loopback (LLB)
Yes
No
Analog Loopback (ALB)
Yes
No
Remote Loopback (RLB)
Yes
No
In-Band Network Loopback (NLB)
Yes
Dual Loopback (DLOOP)
Yes
No
Internal Data Pattern Generation and Detection
Transmit AIS (TAIS)
Yes
No
Quasirandom Signal Source (QRSS)
Yes
In-Band Loop-Up/Down Code Generator
No
Yes
No
Error Insertion and Detection
Bipolar Violation Insertion (INSBPV)
Yes
No
Logic Error Insertion (INSLER)
Yes
No
Bipolar Violation Detection (BPV)
Yes
No
Logic Error Detection, QRSS (QPD)
Yes
No
Alarm Condition Monitoring
Receive Carrier Loss (RCL) Monitoring
Yes
Receive Alarm Indication Signal (AIS) Monitoring
No
Yes
Transmit Driver Failure Monitoring (DFMO)
No
Yes
Jitter Attenuator Limit Trip (JALT)
No
Yes
Other Diagnostic Reports
Receive Line Attenuation Indicator (LATN)
No
Yes
No
10.1 Loopback Modes
10.1.1 Local Loopback (LLB)
When local loopback is enabled (set LLB in CR2, or pull the LLB pin high), inbound data at the receiver
inputs are ignored. TCLK and TPOS/TNEG pass through the jitter attenuator if enabled and are output at
RCLK and RPOS/RNEG. The transmit path is unaffected by LLB, and will continue to transmit data
normally (or AIS if TAIS is enabled).
10.1.2 Analog Loopback (ALB)
When analog loopback (ALB) is enabled (set ALB in CR2, or float the LLB pin), the receiver input pins
are disconnected from the clock and data recovery circuit and replaced by TTIP and TRING. This tests
the entire device including the jitter attenuator, transmitter, and receiver circuits.
10.1.3 Remote Loopback (RLB)
When remote loopback (RLB) is enabled (set RLB in CR2, or pull RLB pin high), inbound data at the
receiver inputs is looped back to the transmitter path. Data passes through the jitter attenuator if enabled.
The B8ZS encoder and decoder are not included in the loopback path. The receive path continues to
operate normally.
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相關代理商/技術(shù)參數(shù)
參數(shù)描述
DS21349Q/T&R+ 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel
DS21349Q/T&R 功能描述:網(wǎng)絡控制器與處理器 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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21349Q+ 功能描述:網(wǎng)絡控制器與處理器 IC 3.3V E1/T1/J1 Line Interface 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
DS21349Q+T&R 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LIU T1/J1 3.3V 28-PLCC
DS21349Q+T&R 功能描述:網(wǎng)絡控制器與處理器 IC 3.3V E1/T1/J1 Line Interface 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
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