73M1866B-IMR/F Maxim Integrated Products, 73M1866B-IMR/F Datasheet - Page 78

• Manufacturer Part Number: 73M1866B-IMR/F
• Description: MICRODAA SGL PCM HIGHWAY 42-QFN
• Manufacturer: Maxim Integrated Products
• Series: MicroDAA™r

Specifications of 73M1866B-IMR/F

• Includes: PCM Highway
• Function: Data Access Arrangement (DAA)
• Interface: PCM, Serial, SPI
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 42-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Power (watts): -

73M1866B/73M1966B Data Sheet
12
Figure 39 shows the six loop back modes available within the 73M1x66B.
Table 41 describes how the above control bits interact to provide each of the six loopback modes.
78
RxData
TxData
Loopback and Testing Modes
Interface
TEST
0000
0000
0000
0000
0001
0010
0011
PCM
PCMLB
73M1906B
INTLB1
TMEN
Interface
Decim.
Interp.
Filter
Filter
SPI
0
0
1
1
0
0
0
TxD
RxD
DIGLB1
CTL
STA
MSBI
Figure 39: Loopback Modes Highlighted
DTST
00
00
10
11
00
00
00
PRM
PRP
Table 41: Loopback Modes
LB
0
1
0
0
0
0
0
SCM
SCP
Normal Mode. (Default)
Loopback between PCM Compander
and FXO core.
Digital Loopback Mode
Interpolated TxData (TxD) is looped
back to the Decimated RxData input
(RxD).
Remote Analog Loopback
Received RxD is looped back as TxD
and transmitted back to the
73M1x66B
Line-Side Device; RxD is D/A
converted to yield the analog transmit
signal (TxA).
Digital Loopback Mode
DR Transmit Bit Stream (TBS) is
looped back to receive digital channel
and received at DX (DIGLB2).
Remote Analog Loopback
Receive analog signal is converted to
Received Bit Stream (RBS) and is
looped back to TBS and the analog
transmit channel (INTLB2).
Analog Loopback
The transmit DR data is connected to
the receiver at the analog interface
and received at the DX pin (ALB).
LSBI
STA
73M1916
Aux A/D
Loopback Mode
DIGLB2
SinC3
DSDM
Filter
TBS
RBS
INTLB2
TxAFE
RxAFE
ALB
Onchip
LIC
DS_1x66B_001
RxA
TxA
No Loops
PCMLB
DIGLB1
INTLB1
DIGLB2
INTLB2
ALB
Mnemonic
External
LIC
Rev. 1.6
Tip
Ring