参数资料
型号: DS3112N
厂商: DALLAS SEMICONDUCTOR
元件分类: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PBGA256
封装: 27 X 27 MM, PLASTIC, BGA-256
文件页数: 107/134页
文件大小: 900K
代理商: DS3112N
DS3112
74 of 134
7.2 T1 / E1 LOOPBACK CONTROL REGISTER DESCRIPTION
Register Name:
T1E1LLB1
Register Description:
T1/E1 Line Loopback Control Register 1
Register Address:
50h
Bit #
765
43210
Name
LLB8
LLB7
LLB6
LLB5
LLB4
LLB3
LLB2
LLB1
Default
000
00000
Bit #
151413
121110
9
8
Name
LLB16
LLB15
LLB14
LLB13
LLB12
LLB11
LLB10
LLB9
Default
000
00000
Note: Bits that are underlined are read only; all other bits are read-write.
Bits 0 to 15 / T1/E1 Line Loopback Enable for Ports 1 to 16 (LLB1 to LLB16). These bits enable or
disable the T1/E1 Line LoopBack (LLB). See the Block Diagrams in Section 1 for a visual description of
this loopback. LLB1 corresponds to T1/E1 Port 1, LLB2 corresponds to T1/E1 Port 2, and so on. Since
ports 4, 8, 12, 16, 20, 24, and 28 are not active in the G747 Mode, the LLB4, LLB8, LLB12 and LLB16
bits have no affect in the G747 Mode.
0 = disable loopback
1 = enable loopback
Register Name:
T1E1LLB2
Register Description:
T1/E1 Line Loopback Control Register 2
Register Address:
52h
Bit #
765
43210
Name
LLB24
LLB23
LLB22
LLB21
LLB20
LLB19
LLB18
LLB17
Default
000
00000
Bit #
151413
121110
9
8
Name
n/a
LLB28
LLB27
LLB26
LLB25
Default
-
0000
Note: Bits that are underlined are read only; all other bits are read-write.
Bits 0 to 11 / T1 Line Loopback Enable for Ports 17 to 28 (LLB17 to LLB28). These bits enable or
disable the T1 Line LoopBack (LLB). See the Block Diagrams in Section 1 for a visual description of
this loopback. LLB1 corresponds to T17 Port 17, LLB18 corresponds to T1 Port 18, and so on. Since
ports 17 to 28 are not active in the E3 Mode, these bits have no affect in the E3 Mode. Since ports 4, 8,
12, 16, 20, 24, and 28 are not active in the G747 Mode, the LLB20, LLB24 and LLB28 bits have no
affect in the G747 Mode.
0 = disable loopback
1 = enable loopback
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