CDB3308
4. SYSTEM CONNECTIONS & JUMPERS
Connector
Name
Reference
Designator Direction
Signal
Connector Function
GND
VA+
VA-
J5
J8
J7
Input
Input
Input
Ground reference.
Positive analog power. +5 V.
Negative analog power. -5 V.
In 1
In 2
In 3
In 4
In 5
In 6
In 7
In 8
J29
J27
J11
J15
J55
J57
J71
J73
J19
J21
J46
J48
J62
J64
J79
J81
J37
J42
J17
J89
J88
J36
Input
Analog input to CS3308.
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
Out 8
USB I/O
RS-232 I/O
I²C/SPI Input
I²C Output
SPI Output
C2
Output
Analog output from CS3308.
Input/Output USB connection to PC for software control.
Input/Output Serial RS-232 connection to PC for software control.
Input/Output Connection for internal/external I²C/SPI control signals.
Output
Output
Output connection for on-board I²C control signals.
Output connection for on-board SPI control signals.
Input/Output Connection for programming the on-board microcontroller (U46).
Table 1. System Connections
Switch Name
Reference Designator
Switch Function
Resets the on-board microcontroller (U46).
Table 2. On-Board Switches
uC Reset
J5
Reference
Connector Name
DC Couple Input 1
Designator
J2
Header Function
DC Couple Input 2
DC Couple Input 3
DC Couple Input 4
DC Couple Input 5
DC Couple Input 6
DC Couple Input 7
DC Couple Input 8
DC Couple Output 1
DC Couple Output 2
DC Couple Output 3
DC Couple Output 4
DC Couple Output 5
DC Couple Output 6
DC Couple Output 7
DC Couple Output 8
J3
J16
J18
J58
J59
J74
J75
J32
J33
J51
J52
J67
J68
J84
J85
When a shunt is present across its pins, each header DC couples its respec-
tive input connector to the associated input of the CS3308.
When no shunt is present across the header’s pins, its respective input con-
nector will be AC coupled to the associated input of the CS3308.
When a shunt is present across its pins, each header DC couples its respec-
tive output connector to the associated output of the CS3308.
When no shunt is present across the header’s pins, its respective output
connector will be AC coupled to the associated output of the CS3308.
Table 3. System Headers
8
DS702DB2
CIRRUS [ CIRRUS LOGIC ]
