參數(shù)資料
型號(hào)： AD9522-4BCPZ-REEL7
廠商： ANALOG DEVICES INC
元件分類(lèi)： 時(shí)鐘產(chǎn)生/分配
英文描述： OTHER CLOCK GENERATOR, QCC64
封裝： 9 X 9 MM, ROHS COMPLIANT, MO-220VMMD-4, LFCSP-64
文件頁(yè)數(shù)： 65/84頁(yè)
文件大小： 1606K
代理商： AD9522-4BCPZ-REEL7
AD9522-4
Rev. 0 | Page 68 of 84
Reg.
Addr
(Hex) Bit(s) Name
Description
016
[3]
B counter
bypass
B counter bypass. This is only valid when operating the prescaler in FD mode.
[3] = 0; normal (default).
[3] = 1; B counter is set to divide-by-1. This allows the prescaler setting to determine the divide for
the N divider.
016
[2:0]
Prescaler P
Prescaler: DM = dual modulus and FD = fixed divide. The Prescaler P is part of the feedback divider.
[2]
[1]
[0]
Mode
Prescaler
0
FD
Divide-by-1.
0
1
FD
Divide-by-2.
0
1
0
DM
Divide-by-2 and divide-by-3 when A ≠ 0; divide-by-2 when A = 0.
0
1
DM
Divide-by-4 and divide-by-5 when A ≠ 0; divide-by-4 when A = 0.
1
0
DM
Divide-by-8 and divide-by-9 when A ≠ 0; divide-by-8 when A = 0.
1
0
1
DM
Divide-by-16 and divide-by-17 when A ≠ 0; divide-by-16 when A = 0.
1
0
DM
Divide-by-32 and divide-by-33 when A ≠ 0; divide-by-32 when A = 0 (default).
1
FD
Divide-by-3.
017
[7:2]
STATUS
pin control
Selects the signal that appears at the STATUS pin. 0x01D[7] must be 0 to reprogram the STATUS pin.
[7]
[6]
[5]
[4]
[3]
[2]
Level or
Dynamic
Signal
Signal at STATUS Pin
0
LVL
Ground, dc (default).
0
1
DYN
N divider output (after the delay).
0
1
0
DYN
R divider output (after the delay).
0
1
DYN
A divider output.
0
1
0
DYN
Prescaler output.
0
1
0
1
DYN
PFD up pulse.
0
1
0
DYN
PFD down pulse.
0
X
LVL
Ground (dc); for all other cases of 0XXXXX not specified.
The selections that follow are the same as for REFMON.
1
0
LVL
Ground (dc).
1
0
1
DYN
REF1 clock (differential reference when in differential mode).
1
0
1
0
DYN
REF2 clock (N/A in differential mode).
1
0
1
DYN
Selected reference to PLL (differential reference when in
differential mode).
1
0
1
0
DYN
Unselected reference to PLL (not available in differential
mode).
1
0
1
0
1
LVL
Status of selected reference (status of differential reference);
active high.
1
0
1
0
LVL
Status of unselected reference (not available in differential
mode); active high.
1
0
1
LVL
Status REF1 frequency (active high).
1
0
1
0
LVL
Status REF2 frequency (active high).
1
0
1
0
1
LVL
(Status REF1 frequency) AND (status REF2 frequency).
1
0
1
0
1
0
LVL
(DLD) AND (status of selected reference) AND (status of VCO).
1
0
1
0
1
LVL
Status of VCO frequency (active high).
1
0
1
0
LVL
Selected reference (low = REF1, high = REF2).
1
0
1
0
1
LVL
DLD; active high.
1
0
1
0
LVL
Holdover active (active high).
1
0
1
LVL
LD pin comparator output (active high).
1
0
LVL
VS (PLL power supply).
1
0
1
DYN
REF1 clock (differential reference when in differential mode).
1
0
1
0
DYN
REF2 clock (not available in differential mode).
1
0
1
DYN
Selected reference to PLL (differential reference when in
differential mode).
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