Evaluation Board Overview; Motherboard - Analog Devices EVAL-ADP1653EB Manual

EVALUATION BOARD OVERVIEW

MOTHERBOARD

ADP1715 1.8V 500mA LDO
R26
R27
ADP3300: 3.3V 500mA LDO
SUPPLY FOR CY68013A
C31
MINI
USB
VIC: USE HEADER TO SET
INTERFACE VOLTAGE,
JP13
AND SUPPLY FOR EEPROM
1.8V EEPROM M24C64R:
HOLDS USB ID CODES
ADI USB/I2C INTERFACE 0.4
The ADP1653 motherboard provides the interface signals to the
ADP1653 flash driver IC. These include the CTRL0/SDA and
2
CTRL1/SCL lines for I C or the control line voltages for the HW
interface modes (strobe, enable, and TxMask).
The Cypress Semiconductor Corporation CY68013A provides
2
the USB interface and I C signals. The selected I
100 kHz. The Motorola M24C64R provides the USB address of
the board. The interface voltage is selected with the VIC header
on the board and is set to 3.3 V by default.
Typically, the daughterboard is inserted directly into the 20-pin
header of the motherboard. For temperature measurements,
however, the ribbon cable provided with the evaluation kit must
be used to connect the motherboard and the daughterboard
because the Cypress CY68013A is not rated at −40°C. The 8-pin
header on the top of the motherboard can be used to connect
external signals. A no connect state is selectable on all signals
generated by the motherboard.
The INT red LED located at the top right of the board lights up
when a fault is detected on the ADP1653. However, with the
daughterboard connected and no V
INT red LED also lights up even though this is normal
STROBE: USE PUSHBUTTON FOR FLASH
2
FOR I C MODE CODES >12 -31
(HPLED > 200mA FOR DEFAULT SETF RESISTOR)
C20
STROBE
U5
R31
C21
USB_OK
C5 D8
C12
C7 R21
C9
C50
U3 C13
C30
C51
C8
C10
R50
C11
C14
R22
R24
C15
JP12
3.3V
5V
R25
C19
VIC
U4
VBAT
1.8V
5V VBAT1.8V 3.3V
CY68013A MICROCONTROLLER:
PROVIDES USB TO I
2
C frequency is
supply to the ADP1653, the
DD
EN
H L
JP6
R51
GND
CONNECT MOTHER BOARD TO DAUGHTER BOARD
C18
DIRECTLY AT HEADER OR WITH RIBBON
R62
R30
CABLE FOR TEMP MEASURMENTS
R63
R64
C6
U2
R65
C17
R66
C16
JP10 JP11
H L H
SCL/CTRL1 SDA/CTRL0
HARDWARE MODE: USE 3-WAY SWITCH TO SELECT OPERATION.
2
C CONVERSION. I
Figure 13. Motherboard
operation. Table 2 shows the recommended settings when the
device is first powered up.
Table 2. Recommended Settings
Control
EN
CTRL0/SDA
CTRL1/SCL
STR
In the hardware mode, CTRL0 and CTRL1 determine the mode
of operation. Table 3 shows the combinations of settings for the
control pins and the corresponding modes.
Table 3. Control Pins
Mode of Operation
Disabled
ILED
Torch
Flash
Rev. A | Page 9 of 20
EVAL-ADP1653EB
INT LED: INDICATES FAULT CONDITION
GP2
INT
JP9
H L
L
TxMASK
2
C MODE: TIE SCL AND SDA TO H POSITION.
Hardware Mode I
INTF = 1 INTF = 0
High High
See Table 3 Must be high
See Table 3 Must be high
X = don't care For HPLED setting > 12,
enables flash
CTRL1
0
0
1
1
GP1
2
C Mode
CTRL0
0
1
0
1