參數(shù)資料
型號: DRX3960A
廠商: Electronic Theatre Controls, Inc.
英文描述: Digital Receiver Front-end
中文描述: 數(shù)字接收機前端
文件頁數(shù): 17/30頁
文件大?。?/td> 450K
代理商: DRX3960A
ADVANCE INFORMATION
DRX 3960A
Micronas
17
10 10
Reference divider setting
The DRX 3960A is able to operate with different reference frequencies. The
reference divider has to be set to the value which divides the reference fre-
quency to 100 kHz.
To prevent malfunction after POR, the default value is set for f
ref
= 27 MHz, if
the pin REF_SW is connected to V
DVDD
or set for f
ref
= 20.25 MHz, if the pin
REF_SW is connected to GND.
bit[8:0]
External_Ref_Freq / 100 kHz
27 MHz
20.25 MHz
4 MHz
10D
hex
CA
hex
28
hex
SYN_REF
10 12
Tuner Take Over Point (TOP) setting
Defines the gain of the internal preamplifier to set the TOP
bit[3:0]
Gain of Preamplifier
0
1
2
...
8
...
14
15
0 dB
1.33 dB
2.67 dB
10 dB (default)
18.67 dB
20 dB
TOP_SET
10 70
Equalizer coefficient 0
bit[9:1]
bit[0]
Coefficient
Update bit
0
1
do not update coefficients
update coefficients
EQU_0
10 71
Equalizer coefficient 1
bit[8:0]
Coefficient
EQU_1
10 72
Equalizer coefficient 2
bit[8:0]
Coefficient
EQU_2
10 73
Equalizer coefficient 3
bit[8:0]
Coefficient
EQU_3
Table 4
8:
Write Register on I
2
C Subaddress 10
hex
I
2
C-Sub-
address
(hex)
Function
Name
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