Datasheet

Data Sheet AD9523
Rev. C | Page 43 of 60
Addr
(Hex)
Register
Name
(MSB)
Bit 7
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
(LSB)
Bit 0
Default
Value
(Hex)
Other
0x230 Status signals Reserved Reserved Status Monitor 0 control 0x00
0x231 Reserved Reserved Status Monitor 1 control 0x00
0x232 Reserved Reserved Reserved
Enable Status_
EEPROM on
STATUS0 pin
STATUS1
pin
divider
enable
STATUS0
pin
divider
enable
Reserved
Sync dividers
(manual
control)
0: sync signal
inactive
1: dividers
held in sync
(same as
SYNC
pin low)
0x00
0x233
Power-down
control
Reserved Reserved Reserved Reserved Reserved
PLL1
power-
down
PLL2
power-down
Distribution
power-down
0x07
0x234
Update all
registers
Reserved IO_Update 0x00
EEPROM Buffer
0xA00
EEPROM
Buffer Segment
Register 1 to
EEPROM
Buffer Segment
Register 3
Instruction (data)[7:0] (serial port configuration register) 0x00
0xA01 High byte of register address (serial port configuration register) 0x00
0xA02 Low byte of register address (serial port configuration register) 0x00
0xA03
EEPROM
Buffer Segment
Register 4 to
EEPROM
Buffer Segment
Register 6
Instruction (data)[7:0] (reaback control register) 0x02
0xA04 High byte of register address (reaback control register) 0x00
0xA05 Low byte of register address (reaback control register) 0x04
0xA06
EEPROM
Buffer Segment
Register 7 to
EEPROM
Buffer Segment
Register 9
Instruction (data)[7:0] (PLL segment) 0x0E
0xA07 High byte of register address (PLL segment) 0x00
0xA08 Low byte of register address (PLL segment) 0x10
0xA09
EEPROM
Buffer Segment
Register 10 to
EEPROM
Buffer Segment
Register 12
Instruction (data)[7:0] (PECL/CMOS output segment) 0x0E
0xA0A High byte of register address (PECL/CMOS output segment) 0x00
0xA0B Low byte of register address (PECL/CMOS output segment) 0xF0
0xA0C
EEPROM
Buffer Segment
Register 13 to
EEPROM
Buffer Segment
Register 15
Instruction (data)[7:0] (divider segment) 0x2B
0xA0D High byte of register address (divider segment) 0x01
0xA0E Low byte of register address (divider segment) 0x90
0xA0F
EEPROM
Buffer Segment
Register 16 to
EEPROM
Buffer Segment
Register 18
Instruction (data)[7:0] (clock input and REF segment)
0x01
0xA10
High byte of register address (clock input and REF segment)
0x01
0xA11 Low byte of register address (clock input and REF segment) 0xE0
0xA12
EEPROM
Buffer Segment
Register 19 to
EEPROM
Buffer Segment
Register 21
Instruction (data)[7:0] (other segment) 0x03
0xA13 High byte of register address (other segment) 0x02
0xA14 Low byte of register address (other segment) 0x30
0xA15
EEPROM
Buffer Segment
Register 22
I/O update 0x80