CDB5461 Datasheet, PDF (6/27 Pages) Cirrus Logic – Evaluation Board and Software

CDB5461
Name
J13
J14
J11
J18
J12
J19
J17
J15
J16
J23
JP2
J24
J25
S1
J29
J21
J22
J27
J10
Function Description
Sets VIN+ on the CS5461 to J6 or GND.
Sets VIN- on the CS5461 to J7 or GND.
Default Setting
VIN+ Set to BNC J6
VIN- Set to BNC J7
Default Jumpers
O O VIN+
O O GND
O O VIN-
O O GND
Used to switch VA-, A-, and GND. Refer toTable 2
on page 5
Used to switch the VREFIN from external J26
header, to the on board LT1019 reference, or to
theCS5461 on-chip reference VREFOUT.
Negative Analog
Power Supply Set to
0V
VREFIN Set to on-
chip reference
VREFOUT
Used to switch VU+, VD+, and VA+ to VDDD and/or Digital Power Supply
D+. Refer to Table 2 on page 5
Set to +5V
Used to connect an external micro-controller.
Connected to 8051
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
Sets IIN- on the CS5461 to J8 or GND.
IIN- Set to BNC J8
VA- _{O O GND}
A- O O GND
O O LT1019
O O REF+
O O REFOUT
Vu+ O
VD+ O
VD+ O
VA+ O
O VDDD
O VDDD
O D+
O D+
NC
OO
OO
O O IIN-
O O GND
Sets IIN+ on the CS5461 to J9 or GND.
IIN+ Set to BNC J9
Used to switch XIN on the CS5461 to J19 when an XIN Set for on-board
external micro-controller is used.
4.096 MHz XTAL
O O IIN+
O O GND
O O GND
O O XIN
Used to connect PFMON pin on the CS5461 to
monitor Power Supply VA+
PFMON Set Monitor
VA+
Used to connect the RESET Button to the CS5461
Used to connect the RESET Button to the 8051
DIP switch to control 8051 (See Table 4)
S1-1 is used to enable auto-boot mode
S1-2 is used to select crystal to 8051
S1-3 is used to select RS-232 test mode
RESET Set con-
nected to CS5461
RESET Set con-
nected to 8051
S1-1 Auto-Boot off
S1-2 Set 20 MHz
S1-3 Set Normal
O O JP2
O O J24
O O J25
1
2
3
OPEN
Enables the D1 LEDs
Enable LEDs
O O J29
Allows LEDs D7 and D6 to indicate pulses on
/EOUT and /EDIR.
Allows LEDs D2 and D3 to indicate pulses on
/FOUT.
Disable LEDs
Disable LEDs
O O J21
O O J22
Allows LEDs D8 to indicate pulses on /INT.
Disable LED
O O J27
Used to disconnect XTAL1 input on microcontroller
from off-board oscillator input.
Use on-board crystal
Table 3. Header, Jumper, and DIP Switch Descriptions
O O J10
6