參數(shù)資料
型號: DS26334GNA3+
廠商: Maxim Integrated Products
文件頁數(shù): 37/121頁
文件大?。?/td> 0K
描述: IC LIU E1/T1/J1 3.3V 256-CSBGA
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 90
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 16/16
規(guī)程: IEEE 1149.1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 256-LBGA,CSBGA
供應(yīng)商設(shè)備封裝: 256-CSBGA(17x17)
包裝: 托盤
DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
22 of 121
5.4.1
Transmit Line Templates
The DS26334 transmitters can be selected individually to meet the pulse masks for E1 and T1/J1 mode. The T1/J1
pulse mask is shown in the Transmit Pulse Template and can be configured on an individual LIU basis. The
transmit template is selected via the TS[2:0] bits in the TS register. Transmit impedance matching is selected using
the TIMPOFF and the TIMPRM bits of the same register. When transmit impedance matching is enabled TIMPRM
will select between 75
and 120 impedance if an E1 template is selected, and between 100 and 110
impedance if a T1/J1 template is selected. In E1 mode, if 75
is selected via the TIMPRM bit, the output pulse
amplitude will be 2.37V, if 120
is selected via the TIMPRIM bit, the output pulse amplitude will be 3.0V.
The E1 pulse template is shown in Figure 5-7 and the T1 pulse template is shown in Figure 5-6.
Table 5-4. Template Selections for Short-Haul Mode
TS2, TS1, TS0
APPLICATION
000
E1
001
Reserved
010
011
DSX-1 (0–133ft)
100
DSX-1 (133–266ft)
101
DSX-1 (266–399ft)
110
DSX-1 (399–533ft)
111
DSX-1 (533–655ft)
Table 5-5. Template Selections for Long-Haul Mode
TS2, TS1, TS0
APPLICATION
000
E1
001
Reserved
010
011
0dB CSU
100
-7.5dB CSU
101
-15dB CSU
110
-22dB CSU
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