AD9879 Analog Devices, AD9879 Datasheet - Page 16
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AD9879
Manufacturer Part Number
AD9879
Description
Mixed Signal Front End Set Top Box, Cable Modem (MxFE®)
Manufacturer
Analog Devices
Datasheet
1.AD9879.pdf
(32 pages)
Specifications of AD9879
Resolution (bits)
12bit
# Chan
5
Sample Rate
29MSPS
Interface
Par
Analog Input Type
Diff-Uni
Ain Range
2 V p-p
Adc Architecture
Pipelined
Pkg Type
QFP
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AD9879
REGISTER MAP AND BIT DEFINITIONS
Table 4. Register Map
Address
(hex)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
1
Register bits denoted with 0 must be programmed with a 0 each time that register is written.
Bit 7
SDIO
Bidirectional
PLL Lock
Detect
Power-
Down PLL
Σ-∆ Output Control Word [3:0]
Flag 0
0
0
Video Input
Enable
ADCs
Clocked
Direct from
OSCIN
0
0
0
0
0
0
0
Cable Driver Amplifier Coarse Gain Control Profile 0 [7:4]
Cable Driver Amplifier Coarse Gain Control Profile 1 [7:4]
1
Bit 6
SPI Bytes
LSB First
Power-
Down
DAC Tx
0
0
0
0
0
0
0
0
0
0
Bit 5
RESET
Power-
Down
Digital
Tx
0
0
Rx Port
Fast
Edge
Rate
0
0
0
0
0
0
Tx Path
Select
Profile 1
Tx Path Frequency Tuning Word Profile 0 [9:2]
Tx Path Frequency Tuning Word Profile 0 [17:10]
Tx Path Frequency Tuning Word Profile 0 [25:18]
Tx Path Frequency Tuning Word Profile 1 [9:2]
Tx Path Frequency Tuning Word Profile 1 [17:10]
Tx Path Frequency Tuning Word Profile 1 [25:18]
Bit 4
Power-
Down
IF12
ADC
Power-
Down
RxSYNC
and IQ
ADC
Clocks
0
0
0
0
0
0
0
0
0
Rev. A | Page 16 of 32
Bit 3
MCLK/REFCLK Ratio R[5:0]
Power-Down
Reference
IF12 ADC
Σ-∆ Output Control Word [11:4]
0
0
Clamp Level for Video Input [6:0]
Enable 7-Bits
IQ ADC
0
0
0
Tx Frequency Tuning Word
Profile 1 LSBs [1:0]
Tx Path
AD8322/
AD8327 Gain
Control Mode
Bit 2
OSCIN Multiplier M[4:0]
Power-
Down
IF10 ADC
0
0
0
0
0
0
Version [3:0]
DAC Fine Gain Control [3:0]
Tx Path
Bypass
Sinc
Filter
Fine Gain Control Profile 0 [3:0]
Fine Gain Control Profile 1 [3:0]
-1
Bit 1
Power-
Down
Reference
IQ and
IF10 ADC
Flag 1
0
0
Send
12-Bit
ADC Data
Only
0
0
0
Tx Frequency Tuning
Word Profile 0 LSBs
[1:0]
Tx Path
Spectral
Inversion
Bit 0
Power-
Down IQ
ADC
Flag 0
Enable
0
0
Send
10-Bit
ADC
Data
Only
0
0
0
Tx Path
Transmit
Single
Tone
Default
(hex)
0x08
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x80
0x00
0x00
0x00
0x05
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Type
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write