CDB5460A
Name
Function Description
Default Setting
Default Jumpers
Used to switch VIN+ on the CS5460A between J6
and GND.
O
O
O VIN+
O GND
J13
VIN+ Set to BNC J6
Used to switch VIN- on the CS5460A between J11
and GND.
O
O
O VIN-
O GND
J14
J11
VIN- Set to BNC J7
Negative Analog
Power Supply Set to
0 V
Used to switch VA-, A-, and GND. Refer toTable 2
on page 6
VA-
A-
O
O
O GND
O GND
Used to switch the VREFIN from external J26
header, to the on board LT1019 reference, or to the
on-chip reference VREFOUT. Refer to Table
Table 1, “Reference Selection,” on page 5
VREFIN Set to on-
chip reference
VREFOUT
O
O
O
O LT1019
O REF+
O REFOUT
J18
J12
Vu+ O O VDDD
VD+ O O VDDD
VD+ O O D+
Used to switch VU+, VD+, and VA+ to VDDD
and/or D+. Refer to Table 2, “Power Supply Con-
nections,” on page 6
Digital Power Supply
Set to +5V
VA+ O O D+
J19
J17
Used to connect an external micro-controller.
Connected to 80C51
NC
Used in conjunction with the self test modes to test
the UART/RS-232 communication link between the
microcontroller and a PC.
RS-232 Set to Normal
Mode
O
O
O
O
Used to switch IIN+ on the CS5460A between J10
and GND.
O
O
O IIN+
O GND
J15
J16
J23
IIN+ Set to BNC J9
IIN- Set to BNC J8
Used to switch IIN- on the CS5460A between J9
and GND.
O
O
O IIN-
O GND
Used to switch XIN on the CS5460A to HDR6 when XIN Set for on-board
an external micro-controller is used.
O
O
O GND
O XIN
4.096 MHz XTAL
Used to connect PFMON pin on the CS5460A to
monitor Power Supply VA+
PFMON Set Monitor
VA+
O
O
O JP2
JP2
JP4
Used to connect the RESET Button to the
CS5460A
RESET Set con-
nected to CS5460A
O JP4
DIP switch to control 80C51 (See Table 4)
S1-1 is used to enable auto-boot mode
S1-2 is used to select crystal to 80C51
S1-3 is used to select RS-232 test mode
1
2
3
S1-1 Auto-Boot off
S1-2 Set 20 MHz
S1-3 Set Normal
S1
OPEN
Allows LEDs D2 and D3 to indicate pulses on
/EOUT and /EDIR. Pulse frequency must be less
than ~6Hz to see light.
J21
J10
Disable LEDs
O
O J21
O J10
Used to disconnect XTAL1 input on microcontroller
from off-board oscillator input.
O
Use on-board crystal
Table 3. Header, Jumper, and DIP Switch Descriptions
7
CIRRUS [ CIRRUS LOGIC ]
