SI5364-H-GL Silicon Laboratories Inc, SI5364-H-GL Datasheet - Page 30

• Manufacturer Part Number: SI5364-H-GL
• Description: IC CLOCK SONET/SDH PORT 99LFBGA
• Manufacturer: Silicon Laboratories Inc

Specifications of SI5364-H-GL

• Input: *
• Output: *
• Frequency - Max: *
• Voltage - Supply: *
• Operating Temperature: *
• Mounting Type: Surface Mount
• Package / Case: 99-LFBGA
• Frequency-max: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si5364
30
*Note: The LVTTL inputs on the Si5364 device have an internal pulldown mechanism that causes the input to default to a logic
C7–9, D1–2,
B6–8, C6
Pin #
F1–2
B10
H1
H2
A3
B3
A2
B2
low state if the input is not driven from an external source.
DSBLFSYNC
CAL_ACTV
Rsvd_GND
Pin Name
BWSEL[0]
BWSEL[1]
Rsvd_NC
SYNCIN
FEC[0]
FEC[1]
Table 10. Pin Descriptions (Continued)
I/O
—
—
O
I*
I*
I*
I*
Signal Level
LVTTL
LVTTL
LVTTL
LVTTL
LVTTL
LVTTL
LVTTL
Rev. 2.5
Synchronization Input for Frame Sync Clock.
Allows time alignment/realignment of the FSYNC
output clock. A rising edge on the SYNCIN input
forces alignment of the FSYNC output clock stream.
Disable the FSYNC Clock Output.
When high, the output driver for the FSYNC pin is
disabled.
Forward Error Correction (FEC) Selection.
Enable or disable scaling of the input-to-output fre-
quency multiplication factor for FEC clock rate com-
patibility.
The multiplication ratios and associated frequency
ranges for the Si5364 clock outputs are set by the
FRQSEL pins associated with each clock output.
Additional scaling by a factor of either 255/238 or
238/255 can be applied to all active outputs as indi-
cated below.
The FEC[1:0] inputs are decoded as follows:
00 = No FEC scaling, FSYNC enabled.
01 = 255/238 FEC scaling for all clock outputs,
10 = 238/255 FEC scaling for all clock inputs,
11 = Reserved.
The FSYNC output is disabled when FEC[1:0] = 01.
Bandwidth Select.
The BWSEL[1:0] pins set the bandwidth of the loop
filter within the DSPLL to 3200 Hz, 800 Hz, or
6400 Hz as indicated below.
00 = 3200 Hz
01 = 1600 Hz
10 = 800 Hz
11 = 6400 Hz
Calibration Mode Active.
Is driven high during the DSPLL self-calibration and
the subsequent initial lock acquisition period.
Reserved—Tie to Ground.
Must be tied to GND for normal operation.
Reserved—No Connect.
Must be left unconnected for normal operation.
FSYNC disabled.
FSYNC enabled.
Description