參數(shù)資料
型號(hào): SI3012-KT
廠商: Electronic Theatre Controls, Inc.
英文描述: 3.3 V FCC/JATE DIRECT ACCESS ARRANGEMENT
中文描述: 3.3伏催化裂化/ JATE直接訪問(wèn)安排
文件頁(yè)數(shù): 46/64頁(yè)
文件大小: 1740K
代理商: SI3012-KT
Si3038
46
Rev. 2.01
Reset settings = 0x0000
This read/write register defines the loopback modes available for the modem line ADCs/DACs.
The default value after cold register reset (0xx000) is all loopbacks disabled.
Bit
Name
Figure 33. Loopback Points
Register 56h Miscellaneous Modem AFE Status and Control
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
MLNK
L2B2
L2B1
L2B0
L1B2
L1B1
L1B0
Function
15:13
Reserved
Read returns zero.
12
MLNK
Controls an MC‘97’s AC-link status. 1 sets the MC‘97’s AC-link
to off (sleep), 0 sets the link on (active).
Read returns zero.
11:7
Reserved
6:4
L2B[2:0]
Line 2 Loopback Modes.
000 = Disabled (default).
001 = ADC Loopback (I
B).
010 = Local Analog Loopback (F
M).
011 = Digital DAC Loopback (C
J).
100 = Remote Analog Loopback (M
F).
101 = ISOcap Loopback (D
K).
110 = External Analog Loopback (G
N).
111 = Reserved.
3
Reserved
Read returns zero.
2:0
L1B[2:0]
Line 1 Loopback Modes.
000 = Disabled (default).
001 = ADC Loopback (I
B).
010 = Local Analog Loopback (F
M).
011 = Digital DAC Loopback (C
J).
100 = Remote Analog Loopback (M
F).
101 = ISOcap Loopback (D
K).
110 = External Analog Loopback (G
N).
111 = Reserved.
AC
Link
Analog
DAC
Analog
ADC
I/O
Pad
I/O
Pad
A
3024
3014
B
D
E
F
G
H
I
K
L
M
N
DAC
Output
ADC
Input
Note: For all loopback modes except 011, line-side must be powered on and off-hook.
C
J
Digital
Filter
Digital
Filter
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