Pi 2 Design CM4AES Hardware Reference Manual – P0.1
PAGE 6
Refer to the following figure for a block diagram of the CM4AES.
PI2AES BLOCK DIAGRAM
PI2AES BLOCK DIAGRAM
PI2AES BLOCK DIAGRAM
PI2AES BLOCK DIAGRAM
USB-A
HOST
USB-A
HOST
USB-A
HOST
USB-A
HOST
10/100 RJ45
w/Transformer
HDMI
4
0
-P
in
E
x
p
a
n
si
o
n
H
e
a
d
e
r
GPIO
I2C
I2S (Slave Mode)
Raspberry Pi ® or Clone
w/40-PIN GPIO Header
+5V
AP1155
LDO
WM8804 24-Bit
SPDIF Transmitter
(Master Mode)
I2S OUPUT
I2C CONTROL
Clock
Select
NDK NZ2520SD
22.792Mhz
50 OHM
BNC
2.5MM
DC Jack
5V @ 5A
Switching Supply
RS-422
Balanced
Driver
1:1 Isolation
Transformer
1:1 Isolation
Transformer
SPDIF OUTPUT
MCLK IN
4
0
-P
in
S
o
c
k
e
t
NDK NZ2520SD
24.576Mhz
AP1155
LDO
TOTX179
OPT O
QUAD
BUFFER
QUAD LVDS
TRA NSMITTER
I2S, I2C & PWR
EXPANSION
HEADER
HDMI
5V
Figure 1 – CM4AES Block Diagram
