AK8140A

AKD8140A
-Preliminary-
AKD8140A Ver.2
Evaluation Board for AK8140A
1. Discription
AKD8140A Ver.2 is an evalutation board for AK8140A Programmable Multi Clock
Generator.
It is ease to evaluation Jitter performances and functions.
2. Ordering guide
AKD8140A Ver.2
3. Block Diagram
VDD
VSS
VDDO VSSO
CLK1
PD_N
S0
SCL
CLK2
AK8140A
CLK3
CLK4p
SDA
XIN
XOUT
CLK4n
Figure 1 : AKD8140A Block Diagram
AKD8140A-Ver.2-E-pre
Sep-2012
1
AKD8140A
4. AKD8140A Ver.2 Evaluation Board
USB port
VDD_IF
JP7
GND1
JP4
External Input
CLK3
GND1
SW6
SW5
VDDO
VDD
R2=0[]
Crystal Unit
SW1
CLK4n
CLK4p
SW2
SW3
CLK2
JP8
SW4 : PD_N
CLK1
Figure 2 : AKD8140A Ver.2 Evaluation Board
1) Power Supply
VDD = VDD1 = VDD2 = VDD3 = VDD4, VDDO = VDDO1 = VDDO2
[JP4] Short GND1 and GND2
[JP7] Short VDD and VDD_IF
[JP8]
Short VDD and VDDO, when VDD=VDDO=3.3V.
Open VDD and VDDO, when VDD=3.3V and VDDO=1.8V.
2) SW Setting
[SW1] Short Pro and JR
[SW2] Short Pro and JR
[SW3] Short M and L, so GND pin and S0 pin is connected to GND.
[SW4] SW4 = GND1 is PD_N pin = ”L”, when AK8140A is power down.
SW4 = VDD1 is PD_N pin = ”H”, when AK8140A is operating.
Sep-2012
AKD8140A-Ver.2-E-pre
2
AKD8140A
3) Clock Input
The clock input is selectable to provide from External Clock or Crystal Unit.
[External Input] Mount 0[] register in R2, when External Clock Input is
connected to AK8140A XIN pin.
[Crystal Unit] Mount 3225 size or 2520 size Crystal Unit, when Crystal Unit is
connected to AK8140A XIN pin and XOUT pin. Don’t mount 0[]
register in R2.
4) USB port
Register of AKD8140 is written form PC through USB cable (USB A - miniB).
[USB port] USB cable can be connected.
AKD8140A-Ver.2-E-pre
Sep-2012
3
AKD8140A
Sep-2012
AKD8140A-Ver.2-E-pre
4
AKD8140A
AKD8140A-Ver.2-E-pre
Sep -2012
5
AKD8140A
Sep-2012
AKD8140A-Ver.2-E-pre
6
Similar pages