參數(shù)資料
型號(hào): AD9551BCPZ-REEL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 28/40頁(yè)
文件大?。?/td> 0K
描述: IC CLOCK GEN TRANSLATOR 40LFCSP
標(biāo)準(zhǔn)包裝: 1
類(lèi)型: 時(shí)鐘發(fā)生器
PLL:
輸入: 晶體
輸出: CMOS,LVDS,LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 2:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 900MHz
除法器/乘法器: 無(wú)/無(wú)
電源電壓: 3.3V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 40-VFQFN 裸露焊盤(pán),CSP
供應(yīng)商設(shè)備封裝: 40-LFCSP-VQ(6x6)
包裝: 標(biāo)準(zhǔn)包裝
其它名稱(chēng): AD9551BCPZ-REEL7DKR
AD9551
Rev. B | Page 34 of 40
Output PLL Control (Register 0x11 to Register 0x19)
Table 26.
Address
Bit
Bit Name
Description
0x11
[7:0]
N
8-bit integer divide value for the output SDM. Default is 0x00.
Note that operational limitations impose a lower boundary of 64 (0x40) on N.
0x12
[7:0]
MOD
Bits[19:12] of the 20-bit modulus of the output SDM.
0x13
[7:0]
MOD
Bits[11:4] of the 20-bit modulus of the output SDM.
0x14
[7:4]
MOD
Bits[3:0] of the 20-bit modulus of the output SDM.
Default is MOD = 1000 0000 0000 0000 0000 (524,288).
3
Enable SPI control of
output frequency
Controls output frequency functionality.
0 = output frequency defined by the Y[3:0] pins (default).
1 = contents of Register 0x11 to Register 0x17 define output frequency via N, MOD, and FRAC.
2
Bypass output SDM
Controls bypassing of the output SDM.
0 = allow integer-plus-fractional division (default).
1 = allow only integer division.
1
Disable output SDM
Controls the output SDM internal clocks.
0 = normal operation (SDM clocks active) (default).
1 = SDM disabled (SDM clocks stopped).
0
Reset output PLL
Controls initialization of the output PLL.
0 = normal operation (default).
1 = resets the counters and logic associated with the output PLL but does not affect the
output dividers.
0x15
[7:0]
FRAC
Bits[19:12] of the 20-bit fractional part of the output SDM.
0x16
[7:0]
FRAC
Bits[11:4] of the 20-bit fractional part of the output SDM.
0x17
[7:4]
FRAC
Bits[3:0] of the 20-bit fractional part of the output SDM.
Default is FRAC = 0010 0000 0000 0000 0000 (131,072).
3
Enable OUTPUT PLL
LOCKED pin as test port
Controls functionality of the OUTPUT PLL LOCKED pin (Pin 26).
0 = OUTPUT PLL LOCKED pin indicates status of PLL lock detector (default).
1 = OUTPUT PLL LOCKED pin indicates the signal defined by Bits[2:1].
[2:1]
Test mux control
Selects test mux output.
00 = front end test clock (default).
01 = PFD up divide-by-2.
10 = PFD down divide-by-2.
11 = PLL feedback divide-by-2.
These bits are ineffective unless Bit 3 = 1.
0
P1 divider
Bit 5 of the 6-bit P1 divider for OUT1.
0x18
[7:3]
P1 divider
Bits[4:0] of the 6-bit P1 divider for OUT1 (1 ≤ P1 ≤ 63). Do not set these bits to 000000. Default is
P1 = 100000 (32). The P1 bits are ineffective unless Register 0x19[7] = 1.
[2:0]
P0 divider
Bits[2:0] of the 3-bit P0 divider for OUT1. The P0 divide value is as follows:
000 = 4 (default).
001 = 5.
010 = 6.
011 = 7.
100 = 8.
101 = 9.
110 = 10.
111 = 11.
The P0 bits are ineffective unless Register 0x19[7] = 1.
0x19
7
Enable SPI control of
OUT1 dividers
Controls functionality of OUT1 dividers.
0 = OUT1 dividers defined by the Y[3:0] pins (default).
1 = contents of Register 0x17 and Register 0x18 define OUT1 dividers (P0 and P1).
6
Enable SPI control of
OUT2 divider
Controls functionality of OUT2 divider.
0 = OUT2 divider defined by the Y[3:0] pins (P2 = 1) (default).
1 = contents of Bits[5:0] define P2.
[5:0]
P2 divider
Bits[5:0] of the 6-bit P2 divider for OUT2 (1 ≤ P2 ≤ 63). Do not set these bits to 000000. Default is
P2 = 100000 (32). The P2 bits are ineffective unless Register 0x19[6] = 1.
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