73M1912-IM/F Maxim Integrated Products, 73M1912-IM/F Datasheet - Page 7

• Manufacturer Part Number: 73M1912-IM/F
• Description: Interface - Specialized MICRODAA CHIP SET LN SIDE
• Manufacturer: Maxim Integrated Products
• Type: Host Interface Chipr

Specifications of 73M1912-IM/F

• Operating Supply Voltage: 3.3 V
• Supply Current: 25 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

UM_1922_006
2 Connectors
Table 1 shows all the connectors and jumpers available on 73M1922 MicroDAA Demo Board. JS1 is the
main connector for interfacing to a host processor or DSP board. Line monitor/Call progress monitor
speaker and driver circuits are also on board. J1 is a modular connector for phone line connection and J4
is for power connection from the main board or an external power supply.
* NOTE: Due to the package restrictions, the MODE pin is not available in a 20-pin TSSOP package.
And neither the Mode pin nor the TYPE pin is available in 42-pin QFN package. User should choose the
right device option when ordering parts depending on the clock mode (32 clock or continuous) and Frame
sync type (early or late frame sync) required. Refer to the ordering information section of the
73M1822/73M1922 Data Sheet.
Rev. 5.1
JS1
J1
J2
R54 (20 TSSOP DB),
R64 (32 QFN DB only)
PIN Number
Schematic and PCB
Schematic and PCB
10
1
2
3
4
5
6
7
8
9
Reference
Reference
NC
VCC
NC
RESET
NC
NC
NC
NC
RINGD
NC
Name
Table 2: 73M1922 Demo Board Configuration Settings
3M CONN.
10X2
RJ-11
3.3 V supply
TYPE
MODE
Description
3.3V power
supply
Reset Input
Ring Det.out
Table 1: 73M1922 Demo Board Connectors
Name
Name
Table 3: JS1 Host Interface Connector
20-pin connector to interface 73M1922 Demo Board to a
HOST controller main board.
Telephone line connector.
Plug for connecting external 3.3 V DC power supply.
Frame Sync Type:
0 Ω population: Late FSB (Default for Samsung ARM9
Interface).
None: Early FSB.
SCLK mode:
0 Ω population: 32 Clock.
None: Continuous SCLK. (Default for Samsung ARM9
Interface)
PIN Number
11
12
13
14
15
16
17
18
19
20
RINGD
NC
NC
NC
AFEIN
AFEOUT
SCLK
FS
NC
GND
Name
Description
Description
73M1922 Demo Board User Manual
Ring Det.out
Serial Data In
Serial Data Out
Serial Clock
Frame Sync
Ground
Description
7