參數(shù)資料
型號: LMK04001BISQ/NOPB
廠商: National Semiconductor
文件頁數(shù): 27/65頁
文件大小: 0K
描述: IC CLOCK CONDITIONER W/PLL 48LLP
標準包裝: 1,000
系列: PowerWise®
類型: 時鐘調(diào)節(jié)器
PLL:
輸入: LVCMOS
輸出: LVCMOS,2VPECL,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:7
差分 - 輸入:輸出: 是/是
頻率 - 最大: 1.57GHz
除法器/乘法器: 是/是
電源電壓: 3.15 V ~ 3.45 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 48-LLP(7x7)
包裝: 帶卷 (TR)
其它名稱: LMK04001BISQ
SNOSAZ8J – SEPTEMBER 2008 – REVISED SEPTEMBER 2011
CLKoutX_DLY: Clock Channel Phase Delay Adjustment
Each output channel has an output delay register that can be used to introduce a lag relative to the distribution
path frequency (VCO Divider output). These registers support a 150 ps stepsize and range from 0 to 2.25 ns of
total delay. When the channel phase delay registers are enabled, a nominal fixed delay of 300 ps of delay is
incurred in addition to the programmed delay. The Channel Phase Delay Adjustment Registers are 4 bits wide
and are programmed as follows:
Table 7. CLKoutX_DLY: Clock Channel Delay Control Bit Values
CLKoutX_DLY [ 3:0 ]
DELAY (ps)
b3
b2
b1
b0
0
1
150
0
1
0
300
0
1
450
0
1
0
600
0
1
0
1
750
0
1
0
900
0
1
1050
1
0
1200
1
0
1
1350
1
0
1
0
1500
1
0
1
1650
1
0
1800
1
0
1
1950
1
0
2100
1
2250
CLKoutX/CLKoutX* LVCMOS Mode Control
For clock outputs that are configured as LVCMOS, the LVCMOS CLKoutX/CLKoutX* outputs can be
independently configured by uWire CLKoutXA_STATE and CLKoutXB_STATE bits. The following choices are
available for LVCMOS outputs:
Table 8. CLKoutXA_STATE, CLKoutXB_STATE Control Bits for LVCMOS Modes
CLKoutXA_STATE
CLKoutXB_STATE
LVCMOS Modes
b1
b0
b1
b0
0
Inverted
0
1
0
1
Normal
1
0
1
0
Low
1
TRI-STATE
CLKoutX/CLKoutX* LVPECL Mode Control
Clock outputs designated as LVPECL can be configured in one of two possible output levels. The default mode
is the common LVPECL swing of 800 mVp-p single-ended (1.6 Vp-p differential). A second mode, 2VPECL, can
be enabled in which the swing is increased to 1000 mVp-p single-ended (2 Vp-p differential).
Table 9. LVPECL Output Format Control
CLKoutX_PECL_LVL
Output Format
0
LVPECL (800 mVpp)
1
2VPECL (1000 mVpp)
Copyright 2008–2011, Texas Instruments Incorporated
33
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