Datasheet
73M1866B/73M1966B Data Sheet DS_1x66B_001
14 Rev. 1.6
2.5 73M1866B Pinout
Figure 6 shows the 73M1866B 42-pin pinout.
DX
VPD
FS
PCLKO
VNA
PCLKI
AOUT
VPA
VNT
PRM
PRP
VPT
RST
SDIT
SDI
VND
SDO
INT
SCLK
CS
DR
SRE
SRB
VBG
ACS
VNS
VPS
RXM
RXP
TXM
DCD
DCS
DCG
DCI
RGN
RGP
OFH
M20PB
VNX
SCP
MID
VPX
73M1866B
1
2
3
4
5
6
7
8
9
10
20
11
12
13
14
15
16
17
18
19
21
22
23
24
25
26
27
28
29
30
31
32
33
35
34
36
37
38
39
40
41
42
Figure 6: 73M1866B 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: 73M1866B Pin Definitions
Pin
Number
Pin Name Type Description
1
DX
O
PCM received data from the A to D
2 VPD PWR Positive digital supply
3
FS
I/O PCM frame synchronization
4 PCLKO O PCM clock output
5 VNA GND Negative analog ground
6 PCLKI I PCM clock in
7 AOUT O Audio output – must be buffered for speaker
8
VPA
PWR
Positive analog supply
9
VNT
GND Negative transformer supply
10
PRM
I/O Transformer primary minus
11 PRP I/O Transformer primary plus
12 VPT PWR Positive transformer supply
13
RST
I Hardware reset (active low)
14 SDIT O SPI data out for daisy-chain mode
15 SDI I SPI data in
16 SDO O SPI data out