Crd5376 – Cirrus Logic CRD5376 User Manual
Page 23
CRD5376
DS612RD2
23
C8051F320 has dedicated pins for power and the USB connection, plus 25 general purpose I/O pins that
connect to the various internal resources through a programmable crossbar. Hardware connections on
CRD5376 limit how the blocks can operate, so the port mapping of microcontroller resources is detailed
below.
Pin # Pin Name Assignment Description
1
P0.1
SDTKI
Token to start CS5376A data transaction
2
P0.0
SYNC_IO
SYNC signal from RS-485
3 GND
Ground
4
D+
USB differential data transceiver
5
D-
USB differential data transceiver
6
VDD
+3.3 V power supply input
7
REGIN
+5 V power supply input (unused on CRD5376)
8
VBUS
USB voltage sense input
Pin # Pin Name Assignment Description
9 /RST
C2CK
RESETz
Power on reset output, active low
Clock input for debug interface
10 P3.0
C2D
GPIO General
purpose
I/O
Data in/out for debug interface
11 P2.7 AIN-
ADC
input
12 P2.6 AIN+
ADC
input
13
P2.5
SW0
Analog switch control
14
P2.4
MODE2
CS4373A mode control
15
P2.3
MODE1
CS4373A mode control
16
P2.2
MODE0
CS4373A mode control