73M1822/73M1922 Data Sheet
DS_1x22_001
2 Pinout
The 73M1922 consists of two devices, the 73M1902 and the 73M1912, which are available as 20-pin
TSSOP packages and as 32-pin QFN package sets.
2.1 73M1902 20-Pin TSSOP Pinout
Figure 2 shows the 73M1902 20-pin TSSOP pinout.
1
2
20
19
18
17
16
SDOUT
SDIN
FSD
FS
3
VND
VND
4
SCLK
VPD/VPPLL
OSCIN/MCLK
OSCOUT
5
6
INT/RGDT
73M1902
15
14
13
12
11
VPT/VPD
PRP
7
VNPLL/VNA
8
PRM
AOUT
TYPE
9
M/S
10
VPA/VPM
VNMVNT
Figure 2: 73M1902 20-Pin TSSOP Pinout
Table 1 describes the pin functions for the device. Decoupling capacitors on the power supplies should be
included for each pair of supply pins.
Table 1: 73M1902 20-Pin TSSOP Pin Definitions
Pin
Number
Pin
Name
Type
Description
1
2
3
4
O
Frame synchronization (FS) delayed
Frame synchronization
FSD
O
FS
VND
GND
PWR
Negative digital ground
VPD/VPPLL
Positive digital/PLL supply
Crystal oscillator circuit input pin.
5
OSCIN/MCLK
I
Input from an external clock source. Crystal frequency range
is 9 MHz – 27 MHz.
6
7
8
OSCOUT
VNA/VNPLL
AOUT
O
GND
O
Crystal oscillator output pin. (N.C. with external oscillator)
Negative analog/PLL ground
Call progress audio output
Type of frame sync. 0 = late (mode0), 1 = early (mode1).
Weak-pulled high – default = early.
9
TYPE
I
10
11
12
13
VPA/VPM
VNM/VNT
PWR
GND
I
Positive analog supply
Negative barrier interface supply / negative transformer supply
Master/slave control, reset at a transition.
Pulse transformer primary minus
M/S
PRM
I/O
8
Rev. 1.6
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
