SY87729LHG Micrel Inc, SY87729LHG Datasheet - Page 10

• Manufacturer Part Number: SY87729LHG
• Description: IC SYNTHESIZER FRACT 3.3V 32TQFP
• Manufacturer: Micrel Inc
• Type: Fractional Synthesizerr

Specifications of SY87729LHG

• Input: PECL
• Output: PECL
• Frequency - Max: 365MHz
• Voltage - Supply: 3.15 V ~ 3.45 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP Exposed Pad, 32-eTQFP, 32-HTQFP, 32-VQFP
• Frequency-max: 365MHz
• For Use With: 576-1404 - BOARD EVAL N SY87729 EXPERIMENT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1405

Micrel, Inc.
Standard Protocol Applications
can generate exactly correct frequencies for at least the 18
protocols listed in Table 7. This table also shows how to
Loop Filter Values
an external loop filter. Figure 4 shows Micrel’s recommended
values for these.
M9999-062807
[e-mail] or [phone]
From a single 27.000MHz reference input, the SY87729L
Each PLL in the SY87729L adjusts its loop gain through
1/8 Fibre Channel
1/4 Fibre Channel
1/2 Fibre Channel
2x Fibre Channel
Gigabit Ethernet
OC-48/STM-16
Fibre Channel
OC-12/STM-4
Fast Ethernet
OC-3/STM-1
Infiniband
D1 Video
Protocol
General
ESCON
HDTV
OC-1
FDDI
ETR
SY87729L Fout (MHz)
Figure 4. Recommended Loop Filter Values
13.28125
26.5625
92.8125
155.52
53.125
155.52
106.25
156.25
155.52
51.84
212.5
125
150
125
WRVCF+
FNCVF+
32
50
50
69
or
Table 7. Protocol Listings
2kΩ
10
program the SY87729L for each protocol listed. This table
assumes no digital wrapper. If your system includes such a
wrapper, then modify the NdivSel and MdivSel bits
accordingly.
0.1µF
Programming Bits
0000 10011 01000 0111 000 10010 101 101
0000 00001 11000 0111 000 01100 101 101
0000 00010 11001 1000 000 01101 101 101
0000 00100 10111 0111 000 00101 101 101
0000 01011 00111 0111 000 11100 101 101
0000 00010 00111 0110 000 00100 101 101
0000 00001 11000 0111 000 00100 101 101
0000 00010 11001 1000 000 01101 101 101
0000 01011 00111 0111 000 10100 101 101
0000 01011 00111 0111 000 01100 101 101
0000 00001 11000 0111 000 00100 101 101
0000 01011 00111 0111 000 00110 101 101
0000 00100 10111 0111 000 00100 101 101
0000 00001 00000 0110 000 01001 101 101
0000 00001 01111 1000 000 00111 101 101
0000 00100 10111 0111 000 00100 101 101
0000 01011 00111 0111 000 00011 101 101
0000 00001 11000 0111 000 00100 101 101
WRVCF—
FNCVF—
or
AnyClock
SY87729L
®