參數資料
型號: DS21Q348
廠商: Maxim Integrated Products
文件頁數: 47/76頁
文件大?。?/td> 0K
描述: IC LIU T1/E1/J1 QUAD 3.3V 144BGA
標準包裝: 90
類型: 線路接口裝置(LIU)
規(guī)程: E1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 144-BBGA
供應商設備封裝: 144-PBGA(17x17)
包裝: 管件
DS21348/DS21Q348
51 of 76
7.4 G.703 Synchronization Signal
The DS21348 can receive a 2.048MHz square-wave synchronization clock as specified in Section 13 of
ITU G.703(10/98). To use the DS21348 in this mode, set the Receive Synchronization Clock Enable
(CCR5.3) = 1. The DS21348 can also transmit the 2.048MHz square-wave synchronization clock as
specified in Section 10 of G.703. To transmit the 2.048MHz clock, set the Transmit Synchronization
Clock Enable (CCR5.2) = 1.
Table 7-1. Line Build-Out Select for E1 in Register CCR4 (ETS = 0)
L2
L1
L0
VDD
(V)
APPLICATION
N
RETURN LOSS
(dB)
Rt (
)
0
3.3
75
normal
1:2
N.M.
0
1
3.3
120
normal
1:2
N.M.
0
1
0
3.3
75
with high return loss
1:2
21
6.2
1
0
1
3.3
120
with high return loss
1:2
21
11.6
Note: See Figure 7-1, Figure 7-2, and Figure 7-3. N.M. = Not meaningful.
Table 7-2. Line Build-Out Select for T1 in Register CCR4 (ETS = 1)
L2
L1
L0
VDD
(V)
APPLICATION
N
RETURN LOSS
(dB)
Rt (
)
0
3.3
DSX-1 (0 to 133 feet)/
0dB CSU
1:2
N.M.
0
1
3.3
DSX-1 (133 to 266 feet)
1:2
N.M.
0
1
0
3.3
DSX-1 (266 to 399 feet)
1:2
N.M.
0
1
3.3
DSX-1 (399 to 533 feet)
1:2
N.M.
0
1
0
3.3
DSX-1 (533 to 655 feet)
1:2
N.M.
0
1
0
1
3.3
-7.5dB CSU
1:2
N.M.
0
1
0
3.3
-15dB CSU
1:2
N.M.
0
1
3.3
-22.5dB CSU
1:2
N.M.
0
Note: See Figure 7-1, Figure 7-2, and Figure 7-3. N.M. = Not meaningful.
Table 7-3. Transformer Specifications for 3.3V Operation
SPECIFICATION
RECOMMENDED VALUE
Turns Ratio 3.3V Applications
1:1 (receive) and 1:2 (transmit) ±2%
Primary Inductance
600
H minimum
Leakage Inductance
1.0
H maximum
Intertwining Capacitance
40pF maximum
Transmit Transformer DC Resistance
Primary (Device Side)
Secondary
1.0
maximum
2.0
maximum
Receive Transformer DC Resistance
Primary (Device Side)
Secondary
1.2
maximum
1.2
maximum
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DS21Q348B 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
DS21Q348DK 功能描述:網絡開發(fā)工具 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
DS21Q348N 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
DS21Q348NB 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
DS21Q348-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