
CDB5460AU
DS487DBU1 3
1. HARDWARE
1.1 Introduction
The CDB5460AU evaluation board provides a quick means of evaluating the CS5460A power measure-
ment IC. The CDB5460AU evaluation board operates from a single +5 V power supply. The evaluation
board interfaces the CS5460A to a PC via an USB interface. To accomplish this, the board comes
equipped with a C8051F320 microcontroller and a USB interface. Additionally, CDB5460AU GUI software
provides easy access to the internal registers of the CS5460A, and provides a means to display the per-
formance in the time domain or the frequency domain.
1.2 Evaluation Board Overview
The board is partitioned into two main sections: analog and digital. The analog section consists of the
CS5460A and a precision voltage reference. The digital section consists of the C8051F320 microcontrol-
ler, EEPROM, the hardware test switches, the reset circuitry, and the USB interface. The board also has
a user friendly power supply connection.
Figure 1. CDB5460AU Assembly Drawing
CDB5460AU
JTAG
USB
J2
J6
Vu+_EXTVD+_EXTGND+5V
J5J4J3
VIN+
VIN-
TP9
TP11
IIN+
IIN-
TP12
TP13
JP6
GND
GND
VREF
VIN+
VIN-
VREF
GND
GND
VREF
IIN+
IIN-
VREF
GND
GND
IIN+
IIN-
GND
GND
VIN+
VIN-
GND
REF+
GND
JP3
GND
J17
J22
J24
J26
J12
LT1019
REF+
J8
VD+_EXT
+5V
J9
+3.3V
VD+
Vu+_EXT
+5V
VD+
8051_REGIN
JP1
GND
JP2
GND
TP25
TP26
TP24
TP23
TP27
TP1
J10
1
J13
1
J15
1
J16
1
LED_EN
LED_EN
LED_EN
LED_EN
E1
E2
E3
MODE
J40
E1
E2
E3
INT
RESET
GND
JP5
TP10
CPUCLK
XU6
Y1
J25
VREF
VREFIN
VREFOUT
VA+
GND VD+GND
J14
J23
J27
GND
VD+
5460A
RESET
S1
4.096MHz
TP7 TP8
XOUT XIN
U3
8051
U4
U5
J1
TP2
TP30
PFMON
MODE
EECS
CS
SCLK
MISO
MOSI
1
2
21 22
ERROR
EVENT
J18
1
AUTO-BOOT
ENABLE
U9
U11
U8
U2
U10
TP22
TP21
TP20
JP4
GND
U1
D1
U6
CDB5460A_61A_63
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