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參數(shù)資料
| 型號(hào)： | STV8226 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Multistandard TV Audio Processor and Digital Sound Demodulator |
| 中文描述： | 多標(biāo)準(zhǔn)電視音頻處理器和數(shù)字聲音解調(diào)器 |
| 文件頁(yè)數(shù)： | 52/97頁(yè) |
| 文件大?。?/td> | 1871K |
| 代理商： | STV8226 |
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Register List
STV82x6
52/97
ACOEFF2
Channel 2 Baseband PLL Loop Filter Proportional Coefficient
BCOEFF2
Channel 2 Baseband PLL Loop Filter Integral Coefficient &
DCO Gain
Address (hex): 33h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ACOEFF2[7:0]
Bit Name
Reset
Function
ACOEFF2[7:0]
10010000
This value defines the loop clamping factor used to program the Proportional Coefficient of the
baseband PLL loop filter (Channel 2). See
Table 15
and
Table 16
.
Address (hex): 34h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
BCOEFF2[7:0]
Bit Name
Reset
Function
BCOEFF2[7:0]
10101100
This value defines the loop bandwidth used to program the Integral Coefficient of the Baseband
PLL loop filter and DCO gain. See
Table 15
and
Table 16
.
Table 15: Baseband PLL Loop Filter Adjustments (FM Mode)
FM mode
Small
Standard
Mid
Wide
A2 standard
ACOEFF (hex)
10h
22h
2Ch
2Ch
10h
BCOEFF (hex)
1Ah
12h
0Ah
0Ah
11h
FM_DEV max (kHz)
62.5
125
250
500
125
DCO Range (kHz)
96
192
384
768
192
Table 16: Baseband PLL Loop Filter Adjustments (QPSK Mode)
QPSK mode
Small
Medium
Large
Extra-large
ACOEFF (hex)
90h
90h
90h
90h
BCOEFF (hex)
ACh
A3h
9Ah
91h
DCO_DEV max (kHz)
2.84375
5.6875
11.375
22.75
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