DS_1x22_001
73M1822/73M1922 Data Sheet
2.5 73M1822 Pinout
Figure 6 shows the 73M1822 42-pin pinout.
31
30
29
28
DCD
TXM
RXM
RXP
VPS
1
PRM
2
3
4
5
27
26
25
24
PRP
VNS
ACS
VPD/VPT
INT/RGDT
SCLK
73M1822
VBG
SRB
SRE
6
23
22
SDIN
SDOUT
FSD
7
8
FS
9
10
VND
Figure 6: 73M1822 42-Pin Pinout
Table 5 describes the pin functions for the device. Decoupling capacitors on the power supplies should be
included for each pair of supply pins.
Table 5: 73M1822 Pin Definitions
Pin
Number
Pin Name
Type
Description
1
2
3
PRP
I/O
I/O
Pulse transformer primary plus
Pulse transformer primary minus
Positive digital/transformer supply
PRM
VPD/VPT
PWR
Ring detection indicator or other Interrupts
Open drain
4
INT/RGDT
O
Serial interface clock. With continuous SCLK selected,
5
SCLK
O
Frequency = 256∗Fs (=1.8432 MHz for Fs=7.2 kHz, 2.048 MHz
for Fs=8 kHz)
6
SDIN
I
Serial data input (or output from the controller to the 73M1822)
Serial data output (or input to the controller from the 73M1822)
FS delayed
7
SDOUT
FSD
O
8
O
9
O
Frame synchronization
FS
10
11
12
13
VND
GND
I/O
GND
PWR
Negative digital ground
GPIO
VND
Configurable digital input/output pins
Negative digital ground
VPD/VPPLL
Positive digital supply
Rev. 1.6
15
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
