參數(shù)資料
型號(hào): DS21Q48
廠商: Maxim Integrated Products
文件頁數(shù): 26/73頁
文件大?。?/td> 0K
描述: IC LIU E1/T1/J1 QUAD 5V 144-BGA
標(biāo)準(zhǔn)包裝: 90
類型: 線路接口裝置(LIU)
規(guī)程: E1
電源電壓: 4.75 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 144-BBGA
供應(yīng)商設(shè)備封裝: 144-PBGA(17x17)
包裝: 管件
DS2148/DS21Q48
32 of 73
CCR5 (04H): COMMON CONTROL REGISTER 5
(MSB)
(LSB)
BPCS1
BPCS0
MM1
MM0
RSCLKE
TSCLKE
RT1
RT0
SYMBOL
POSITION
DESCRIPTION
BPCS1
CCR5.7
Backplane Clock Select 1. See Table 4-3 for details.
BPCS0
CCR5.6
Backplane Clock Select 0. See Table 4-3 for details.
MM1
CCR5.5
Monitor Mode 1. See Table 4-4.
MM0
CCR5.4
Monitor Mode 0. See Table 4-4.
RSCLKE
CCR5.3
Receive Synchronization Clock Enable. This control bit determines
whether the line receiver should handle normal T1/E1 signals or a
synchronized signal.
E1 mode:
0 = receive normal E1 signal (Section 6 of G.703)
1 = receive 2.048 MHz synchronization signal (Section 10 of G.703)
T1 mode:
0 = receive normal T1 signal
1 = receive 1.544 MHz synchronization signal
TSCLKE
CCR5.2
Transmit Synchronization Clock Enable. This control bit determines
whether the transmitter should transmit normal T1/E1 signals or a
synchronized signal.
E1 mode:
0 = transmit normal E1 signal (Section 6 of G.703)
1 = transmit 2.048 MHz synchronization signal (Section 10 of G.703)
T1 mode:
0 = transmit normal T1 signal
1 = transmit 1.544 MHz synchronization signal
RT1
CCR5.1
Receive Termination 1. See Table 4-5 for details.
RT0
CCR5.0
Receive Termination 0. See Table 4-5 for details.
Table 4-3. Backplane Clock Select
BPCS1
(CCR5.7)
BPCS0
(CCR5.6)
BPCLK
FREQUENCY
0
16.384MHz
0
1
8.192MHz
1
0
4.096MHz
1
2.048MHz
Table 4-4. Monitor Gain Settings
MM1
(CCR5.5)
MM0
(CCR5.4)
INTERNAL LINEAR GAIN
BOOST (dB)
0
Normal operation (no boost)
0
1
20
1
0
26
1
32
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