Other Parts Discussed in Thread: DS125DF111
Hello
We have several questions. Please understand that some of the questions appear obvious or redundant, we need to confirm our assumptions. Thank you for your time and efforts on this matter.
1) Does the DS110DF111/DS125SD111 lock to the frequencies / data rates programmed in the Group 0 and Group 1 VCO frequency programming registers, 0x60 – 0x64?
2) Will the DS110DF111/DS125DF111 automatically lock to 1.25GHz, 10.3125Gb/s, 5.15625Gb/s, and 2.578125Gb/s per the information below.
GROUP1 = 1.25Gb/s
GROUP0 = 10.3125Gb/s
RATE SUBRATE GROUP0 DIVIDE RATIOS GROUP1 DIVIDE RATIONS
----------------------------------------------------------------------
00 10 1, 2, 4 1
3) If the DS110DF111 does not automatically lock, do we need to override the VCO divider select register 0x09 and configure the divder ration using register 0x18?
4) What are the default divider ratios for all Rate and Subrate configuration other than Rate 00 and Subrate 00?
5) Can you please advise if these data rates are possible with the DS110DF111 or DS125DF111
a) 614.4 Mb/s
b) 768 Mb/s
c) 1.2288 Gb/s
d) 1.25 Gb/s
e) 1.536 Gb/s
f) 2.4576 Gb/s
g) 2.48832 Gb/s
h) 3.0720 Gb/s
i) 4.9152 Gb/s
j) 6.1440 Gb/s
k) 9.8304 Gb/s
l) 9.95328 Gb/s
m) 10.1376 Gb/s
n) 10.3125 Gb/s
o) 12.1651 Gb/s
i) 12.2880 Gb/s
6) Can you please help and advise on the Group 0 and Group 1 programming setting and divider rate selection. Is this possible
GROUP1 VCO = 10.1376 Gb/s
GROUP0 VCO = 9.8304 Gb/s
RATE SUBRATE GROUP0 DIVIDE RATIOS GROUP1 DIVIDE RATIONS
----------------------------------------------------------------------
01 10 1, 2, 4, 8 1, 2, 4, 8
Divider 1 (00 - 0x18) 9.8304 Gb/s 12.2880 Gb/s
Divider 2 (01 – 0x18) 4.9152 Gb/s 6.1440 Gb/s
Divider 4 (10 – 0x18) 2.4576 Gb/s 3.0720 Gb/s
Divider 8 (11 – 0x18) 1.2288 Gb/s n/a
