參數(shù)資料
型號: SI5320-H-BL
廠商: Silicon Laboratories Inc
文件頁數(shù): 18/34頁
文件大小: 0K
描述: IC CLOCK MULT SONET/SDH 63-PBGA
標(biāo)準(zhǔn)包裝: 260
系列: DSPLL®
類型: 時鐘乘法器
PLL:
輸入: LVTTL
輸出: CML
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 693MHz
除法器/乘法器: 是/是
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -20°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 63-LBGA
供應(yīng)商設(shè)備封裝: 63-PBGA(9x9)
包裝: 托盤
Si5320
Rev. 2.5
25
F1
G1
H1
INFRQSEL[0]
INFRQSEL[1]
INFRQSEL[2]
I*
LVTTL
Input Frequency Range Select.
Pins(INFRQSEL[2:0]) select the frequency range for
the input clock, CLKIN. (See Table 3 on page 7.)
000 = Reserved.
001 = 19 MHz range.
010 = 38 MHz range.
011 = 77 MHz range.
100 = 155 MHz range.
101 = 311 MHz range.
110 = 622 MHz range.
111 = Reserved.
F8
LOS
O
LVTTL
Loss-of-Signal (LOS) Alarm for CLKIN.
Active high output indicates that the Si5320 has
detected missing pulses on the input clock signal.
The LOS alarm is cleared after either 100 ms or
13 seconds of a valid CLKIN clock input, depending
on the setting of the VALTIME input.
D8
DH_ACTV
O
LVTTL
Digital Hold Mode Active.
Active high output indicates that the DSPLL is in
digital hold mode. Digital hold mode locks the
current state of the DSPLL and forces the DSPLL to
continue generation of the output clock with no
additional phase or frequency information from the
input clock.
H3
RSTN/CAL
I*
LVTTL
Reset/Calibrate.
When low, the internal circuitry enters into the reset
mode and all LVTTL outputs are forced into a high-
impedance state. Also, the CLKOUT+ and
CLKOUT– pins are forced to a nominal CML logic
LOW and HIGH respectively. This feature is useful
for in-circuit test applications.
A low-to-high transition on RSTN/CAL initializes all
digital logic to a known condition, enables the device
outputs, and initiates self-calibration of the DSPLL.
Upon completion of self-calibration, the DSPLL
begins to lock to the selected clock input signal.
Table 11. Si5320 Pin Descriptions (Continued)
Pin #
Pin Name
I/O
Signal Level
Description
*Note:
The LVTLL inputs on the Si5320 device have an internal pulldown mechanism that causes these inputs to default to a
logic low state if the input is not driven from an external source.
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