
Hardware
CY3677 Evaluation Kit User Guide, Doc. No. 002-12185 Rev. *D
24
4.2.4 LED Indicators
Table 4-4: LED Indicators
LED
Label
Indicator
Description
LED1
USB_PWR_LED
USB Power and
Status
This LED turns ON when the kit is connected to the USB port on a PC using the cable
provided.
If this LED does not turn ON, it indicates that the USB enumeration of the kit did not
happen with the host PC. This LED blinks continuously when the device is being
programmed through the PSoC 5LP device.
Note:
This LED may glow with low intensity under the following condition:
The CY29430 supply is disconnected through the jumper (J1). This low-intensity LED
glow may be misleading to the user on the status of the USB connection to the board.
It is, therefore, recommended to avoid this condition during use of the kit.
LED2
POWER_LED
Clock Device
Power
This LED turns ON when the core of the CY29430 device is powered. Ensure that a
jumper shunt is populated or not populated on J13 per
Table 4-2
for proper supply of
CY29430.
The intensity of this LED for 1.8 V is lower compared to 2.5 V and 3.3 V.
4.2.5 On-Board Crystal
This EVK is populated with a Third Overtone Crystal (OT3) of 114.285 MHz. This crystal has a frequency tolerance of
±20 ppm. It serves as a clock source for the CY29430 device.
4.2.6 TCXO Input Reference
The CY29430 device can also be evaluated with external TCXO reference. The external reference clock source must be
connected to the SMA connector J11. To activate the TCXO reference clock effective to the CY29430 device, desolder the
resistor R40, and populate the 0-
resistor R42. R40 and R42 are located on the secondary side near the Y1 crystal.
4.2.7 Frequency Select (FS)
The volatile and the nonvolatile memory of the CY29430 device stores four frequency profiles. The Frequency Select inputs
of the device (FS0 and FS1) can be controlled by the on-board jumpers J14 and J15. FS0 and FS1 can also be configured
using ClockWizard 2.1. Refer to
Table 4-5
for the Frequency Select operation.
Table 4-5: Jumper Settings for Frequency Select
Jumper Settings for
Hardware Control of FS
Bits
Jumper Settings for ClockWizard 2.1 Control of FS Bits
FS Input (logic) to
CY29430
Frequency
Profile
Selected
J14
Settings
J15
Settings
J14
Settings
J15
Settings
ClockWizard 2.1 Settings
FS1_DUT
FS0_DUT
Open
Open
Short pin 2
and 3
Short pin 2
and 3
Select FS1:FS0: as 00 and
click
Apply
0
0
0
Open
Short pin 1
and 2
Select FS1:FS0: as 01 and
click
Apply
0
1
1
Short pin 1
and 2
Open
Select FS1:FS0: as 10 and
click
Apply
1
0
2
Short pin 1
and 2
Short pin 1
and 2
Select FS1:FS0: as 11 and
click
Apply
1
1
3
Note:
The Hardware and ClockWizard 2.1 control are mutually exclusive and only one works at a time
Содержание CY3677
Страница 36: ...Appendix CY3677 Evaluation Kit User Guide Doc No 002 12185 Rev D 36 B 3 Schematics Figure B 3 Block Diagram...
Страница 38: ...CY3677 Evaluation Kit User Guide Doc No 002 12185 Rev D Figure B 5 Controller Schematics...
Страница 39: ...CY3677 Evaluation Kit User Guide Doc No 002 12185 Rev D Figure B 6 CY29430 Schematics...