參數資料
型號: DS21348TN
廠商: Maxim Integrated Products
文件頁數: 26/76頁
文件大?。?/td> 0K
描述: IC LIU LN T1/E1/J1 3.3V 44-TQFP
產品培訓模塊: Lead (SnPb) Finish for COTS
產品變化通告: Product Discontinuation 20/Feb/2012
標準包裝: 160
類型: 線路接口裝置(LIU)
驅動器/接收器數: 1/1
規(guī)程: T1/E1/J1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 44-TQFP
供應商設備封裝: 44-TQFP(10x10)
包裝: 托盤
DS21348/DS21Q348
32 of 76
4.1 Device Power-Up and Reset
The DS21348 will reset itself upon power-up setting all writeable registers to 00h and clear the status and
information registers. CCR3.7 (TUA1) = 0 results in the LIU transmitting unframed all ones. After the
power supplies have settled following power-up, initialize all control registers to the desired settings, then
toggle the LIRST bit (CCR3.2). At anytime, the DS21348 can be reset to the default settings by bringing
HRST (pin 29) low (level triggered) or by powering down and powering up again.
CCR4 (03H): COMMON CONTROL REGISTER 4
(MSB)
(LSB)
L2
L1
L0
EGL
JAS
JABDS
DJA
TPD
SYMBOL
POSITION
DESCRIPTION
L2
CCR4.7
Line Build Out Select Bit 2. Sets the transmitter build out; see Table 7-1
for E1 and Table 7-2 for T1.
L1
CCR4.6
Line Build Out Select Bit 1. Sets the transmitter build out; see Table 7-1
for E1 and Table 7-2 for T1.
L0
CCR4.5
Line Build Out Select Bit 0. Sets the transmitter build out; see Table 7-1
for E1 and Table 7-2 for T1.
EGL
CCR4.4
Receive Equalizer Gain Limit. This bit controls the sensitivity of the
receive equalizer. See Table 4-2.
JAS
CCR4.3
Jitter Attenuator Select.
0 = place the jitter attenuator on the receive side
1 = place the jitter attenuator on the transmit side
JABDS
CCR4.2
Jitter Attenuator Buffer Depth Select.
0 = 128 bits
1 = 32 bits (use for delay-sensitive applications)
DJA
CCR4.1
Disable Jitter Attenuator.
0 = jitter attenuator enabled
1 = jitter attenuator disabled
TPD
CCR4.0
Transmit Power-Down.
0 = normal transmitter operation
1 = powers down the transmitter and tri-states the TTIP and TRING pins
Table 4-2. Receive Equalizer Sensitivity Settings
EGL
(CCR4.4)
ETS
(CCR1.7)
RECEIVE
SENSITIVITY
0
0 (E1)
-12dB (short haul)
1
0 (E1)
-43dB (long haul)
1
1 (T1)
-30dB (limited long haul)
0
1 (T1)
-36dB (long haul)
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相關代理商/技術參數
參數描述
DS21348TN+ 功能描述:網絡控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS21348TNB 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS21348T-W 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS21349 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V T1/J1 Line Interface Unit
DS21349DK 功能描述:網絡開發(fā)工具 DS21349 Design Kit RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V