Cirrus-logic CRD5376 Manuel d'utilisateur Page 23

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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
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