3.5 Status SYMBOL LQFP LFBGA TYPE DESCRIPTION CBLSEL 93 G13 I Cable" />
參數(shù)資料
型號: CS61884-IRZ
廠商: Cirrus Logic Inc
文件頁數(shù): 7/72頁
文件大?。?/td> 0K
描述: IC LN INTERF T1/E1/J1 160-LFBGA
標(biāo)準(zhǔn)包裝: 126
功能: 線路接口單元(LIU)
接口: E1,J1,T1
電路數(shù): 8
電源電壓: 3.14 V ~ 3.47 V
功率(瓦特): 1.73W
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 160-LFBGA
供應(yīng)商設(shè)備封裝: 160-TFGBA(13x13)
包裝: 散裝
包括: AMI 編碼器和解碼器,B8ZS 編碼器和解碼器,HDB3 編碼器和解碼器,LOS 檢測
產(chǎn)品目錄頁面: 759 (CN2011-ZH PDF)
其它名稱: 598-1717
CS61884
DS485F3
15
3.4 Cable Select
3.5 Status
SYMBOL
LQFP
LFBGA
TYPE
DESCRIPTION
CBLSEL
93
G13
I
Cable Impedance Select
Host Mode - The input voltage to this pin does not effect
normal operation.
Hardware Mode - This pin is used in combination with the
LEN control pins (Refer to Table 5, “Hardware Mode Line
impedance for all eight receivers and transmitters. This pin
also selects whether or not all eight receivers use an inter-
nal or external line matching network (Refer to the Table
below for proper settings).
page 52 for appropriate external line matching com-
ponents. All transmitters use internal matching net-
works.
Table 3. Cable Impedance Selection
E1/T1/J1
CBLSEL
Transmitters
Receivers
T1/J1
No Connect
100
Ω Internal
Internal
T1/J1
HIGH
100
Ω Internal
Internal
T1/J1
LOW
100
Ω Internal
External
E1
No Connect
120
Ω Internal
Inter or Ext
E1
HIGH
75
Ω Internal
Internal
E1
LOW
75
Ω Internal
External
SYMBOL
LQFP
LFBGA
TYPE
DESCRIPTION
LOS0
LOS1
LOS2
LOS3
LOS4
LOS5
LOS6
LOS7
42
35
75
68
113
106
3
140
K4
K3
K12
K11
E11
E12
E3
E4
O
Loss of Signal Output
The LOS output pins can be configured to indicate a loss of
signal (LOS) state that is compliant to either T1.231, ITU
G.775 or ETSI 300 233. These pins are asserted “High” to
indicate LOS. The LOS output returns low when an input
signal is present for the time period dictated by the associ-
ated specification (Refer to Loss-of-Signal (LOS) (See
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