參數(shù)資料
型號(hào): AD9558BCPZ
廠商: Analog Devices Inc
文件頁數(shù): 88/104頁
文件大?。?/td> 0K
描述: IC CLOCK TRANSLATOR 64LFCSP
產(chǎn)品變化通告: AD9558 Minor Metal Mask Change 17/Apr/2012
標(biāo)準(zhǔn)包裝: 1
類型: 時(shí)鐘/頻率轉(zhuǎn)換器
PLL:
主要目的: 以太網(wǎng),SONET/SDH,Stratum
輸入: CMOS,LVDS,LVPECL
輸出: CMOS,HSTL,LVDS
電路數(shù): 1
比率 - 輸入:輸出: 4:6
差分 - 輸入:輸出: 是/是
頻率 - 最大: 1.25GHz
電源電壓: 1.71 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 64-LFCSP-VQ(9x9)
包裝: 托盤
AD9558
Data Sheet
Rev. B | Page 84 of 104
Table 73. Clock Distribution Channel 3 and OUT5 Driver Settings
Address
Bits
Bit Name
Description
0x050F
7
Enable 3.3 V CMOS driver
0 (default) = disable 3.3 V CMOS driver; the OUT5 1.8 V logic is controlled by Register 0x050F[6:4].
1 = enable 3.3 V CMOS driver as operating mode of OUT5.
This bit should be enabled only if Bits[6:4] are in CMOS mode.
[6:4]
OUT5 format
This control is valid when Register 0x050F[7] = 0; when Register 0x050F[7] = 1, OUT5 is in 3.3 V
CMOS mode and these bits are ignored.
Select the operating mode of OUT5.
000 = PD, tristate.
001 (default) = HSTL.
010 = LVDS.
011 = reserved.
100 = CMOS, both outputs active.
101 = CMOS, P output active, N output power-down.
110 = CMOS, N output active, P output power-down.
111 = reserved.
[3:2]
OUT5 polarity
Control the OUT5 polarity.
00 (default) = positive, negative.
01 = positive, positive.
10 = negative, positive.
11 = negative, negative.
1
OUT5 drive strength
Controls the output drive capability of OUT5.
0 (default) = CMOS: low drive strength, LVDS: 3.5 mA nominal.
1 = CMOS: normal drive strength, LVDS: 4.5 mA nominal (LVDS boost mode).
Note that this is only in 3.3 V CMOS mode for CMOS strength.
1.8 V CMOS has only the low drive strength.
0
OUT5 enable
Enables/disables (1b/0b) OUT5 1.8 V driver (default is disabled).
This bit does not enable/disable OUT5 if Bit 7 of this register is set.
0x0510
[7:0]
Channel 3, Divider 1 (M3)
division ratio
10-bit channel divider, Bits[7:0] (LSB) (default: 0x03).
Division equals channel divider, Bits[9:0] + 1.
(Bits[9:0] = 0 is divide-by-1, Bits[9:0] = 1 is divide-by-2…Bits[9:0] = 1023 is divide-by-1024).
0x0511
[7:2]
Reserved
Reserved.
[1:0]
Channel 3, Divider 1 (M3)
division ratio
10-bit channel divider, Bits[9:8] (MSB) (default: 0x00).
0x0512
[7:0]
Channel 3, Divider 2
(M3b) division ratio
10-bit channel divider, Bits[7:0] (LSB).
Division equals channel divider bits[9:0] + 1 .
(Bits[9:0] = 0 is divide-by-1, Bits[9:0] = 1 is divide-by-2…Bits[9:0] = 1023 is divide-by-1024).
0x0513
[7:4]
Reserved
Reserved.
4
Channel 3 doubler
0 (default) = normal operation.
1 = enables Channel 3 clock doubler. This bit activates an internal clock doubler that doubles
the frequency of the Channel 3 divider. In this mode, Channel 3, Divider 2 is bypassed.
3
PD Channel 3
0 (default) = normal operation.
1 = powers down Channel 3.
2
Select RF divider
for Channel 2
1 = selects RF Divider 2 as prescaler for the Channel 3 divider.
0 (default) = selects RF Divider 1 as a prescaler for the Channel 3 divider.
[1:0]
Channel 3, Divider 2
(M3b) division ratio
10-bit channel divider, Bits[9:8] (MSB).
0x0514
[7:0]
Channel 3, Divider 1 (M3)
phase
The same control for Channel 3, Divider 1 phase as found in Register 0x0504 for Channel 0
divider phase (default: 0x00).
0x0515
[7:0]
Channel 3, Divider 2
(M3b) phase
The same control for Channel 3, Divider 2 phase as found in Register 0x0504 for Channel 0
divider phase (default: 0x00).
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