参数资料
型号: AD9549A/PCBZ
厂商: Analog Devices Inc
文件页数: 43/76页
文件大小: 0K
描述: BOARD EVALUATION FOR AD9549A
设计资源: AD9549 Schematics
AD9549 Gerber Files
标准包装: 1
主要目的: 计时,时钟发生器
嵌入式:
已用 IC / 零件: AD9549A
主要属性: 8 kHz ~ 750 MHz 输入
次要属性: 差分输出
已供物品:
AD9549
Rev. D | Page 48 of 76
I/O REGISTER MAP
All address and bit locations that are left blank in Table 13 are unused. Accessing reserved registers should be avoided. In cases where
some of the bits in register are reserved, the user can rely on the default value in the I/O register map and write the same value back to the
reserved bits in that register.
Table 13.
Addr
(Hex)
Type1
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
BIt 2
Bit 1
Bit 0
Default
(Hex)
Serial port configuration and part identification
0x0000
Serial
config.
SDO
active
LSB first
(buffered)
Soft
reset
Long
inst.
Long
inst.
Soft reset
LSB first
(buffered)
SDO active
0x18
0x0001
Reserved
0x0002
RO
Part ID
0x82
0x0003
RO
0x09
0x0004
Serial
options
Read buffer
register
0x00
0x0005
AC
Register
update
0x00
Power-down and reset
0x0010
Power-
down and
enable
PD HSTL
driver
Enable
CMOS
driver
Enable
output
doubler
PD
SYSCLK
PLL
PD REFA
PD REFB
Full PD
Digital PD
0x00
0x0011
Reserved
0x0012
M, AC
Reset
History
reset
IRQ
reset
FPFD
reset
CPFD
reset
LF reset
CCI reset
DDS reset
0x00
0x0013
M
PD fund
DDS
S-div/2
reset
R-div/2
reset
S-divider
reset
R-divider
reset
0x00
System clock
0x0020
N-divider
N-divider, Bits[4:0]
0x12
0x0021
Reserved
0x0022
PLL
parameters
VCO auto
range
reference
VCO range
Charge pump current,
Bits[1:0]
0x04
0x0023
PFD
divider
PFD divider, Bits[3:0]
(relationship between SYSCLK and PFD clock)
0x05
DPLL
0x0100
M
PLL
control
Reserved
Single-
tone
mode
Disable
freq.
estimator
Enable
freq.
slew
limiter
Reserved
Loop
polarity
Close loop
0x30
0x0101
R-divider
R-divider, Bits[15:0]
0x00
0x0102
0x00
0x0103
Falling
edge
triggered
Reserved
R-divider/2
0x00
0x0104
S-divider
S-divider, Bits[15:0]
0x00
0x0105
0x00
0x0106
Falling
edge
triggered
Reserved
S-divider/2
0x00
0x0107
M
P-divider
P-divider, Bits[4:0]
0x05
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