6
Rev 0
DEMO MANUAL DC2609A
DC2609A RECONFIGURATION
Table 3. LTC6952 Sync Mode Programming Options
Board Modifications (DNI = Do Not Install)
SYNC/SYSREF
Method
EZS_SRQ Pins
State
R53 (Ω)
R7 (Ω)
R5 (Ω)
R50 (Ω)
R10 (Ω)
R3 (Ω)
R8 (Ω)
EZS_SRQ Pin
Differential, CML
or LVPECL
DNI
DNI
100
0
0
DNI
DNI
Differential LVDS
100
100
750
50
50
130
130
EZS_SRQ
+
: CMOS
EZS_SRQ
–
: GND
200k
0
DNI
0
0
DNI
DNI
SSRQ Register Bit
EZS_SRQ
+
: GND
EZS_SRQ
–
: GND
200k
0
DNI
0
0
DNI
DNI
FREQUENTLY ASKED QUESTIONS
1. Can the LTC6952Wizard control a LTC6952 on a board other than the DC2609A?
Yes, follow these steps.
Step 1: Configure the DC2026 for 3.3V SPI as shown in Figure 2
Step 2: Connect the DC2026 J1 connector SPI pins to the LTC6952 SPI pins. Refer to page two of the DC2609A sche-
matic for pin assignments.
2. Does the LTC6952 have Linduino Code available?
Yes, download the LTC6953 sketch in the LTSketchbook. To use the LTSketchbook and for instructions on how to start
using Linduino refer to the
Linduino Design Center
. This will give programmers a head start in writing code for the
LTC6952. It is recommended to use the LTC6952Wizard to create the best possible register settings for all conditions.
These LTC6952 register settings from LTC6952Wizard can be programmed in a lookup table.
