參數(shù)資料
型號: TSC2101IRGZ
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝: GREEN, PLASTIC, VQFN-48
文件頁數(shù): 87/95頁
文件大?。?/td> 1217K
代理商: TSC2101IRGZ
TSC2101
SLAS392D JUNE 2003 REVISED MAY 2005
www.ti.com
88
PLL PROGRAMMING
The on-chip PLL in the TSC2101 can be used to generate sampling clocks from a wide range of MCLK’s
available in a system. The PLL works by generating oversampled clocks with respect to Fsref (44.1 kHz or
48 kHz). Frequency division generates all other internal clocks. Table 7 and Table 8 gives a sample
programming for PLL registers for some standard MCLK’s when PLL is required. Whenever the MCLK is of the
form of N × 128 × Fsref (N=2,3,...), the PLL is not required.
Table 7. Fsref = 44.1 kHz
MCLK (MHz)
P
J
D
ACHIEVED FSREF
% ERROR
2.8224
1
32
0
44100.00
0.0000
5.6448
1
16
0
44100.00
0.0000
12
1
7
5264
44100.00
0.0000
13
1
6
9474
44099.71
0.0007
16
1
5
6448
44100.00
0.0000
19.2
1
4
7040
44100.00
0.0000
19.68
1
4
5893
44100.30
0.0007
48
4
7
5264
44100.00
0.0000
Table 8. Fsref = 48 kHz
MCLK (MHz)
P
J
D
ACHIEVED FSREF
% ERROR
2.048
1
48
0
48000.00
0.0000
3.072
1
32
0
48000.00
0.0000
4.096
1
24
0
48000.00
0.0000
6.144
1
16
0
48000.00
0.0000
8.192
1
12
0
48000.00
0.0000
12
1
8
1920
48000.00
0.0000
13
1
7
5618
47999.71
0.0006
16
1
6
1440
48000.00
0.0000
19.2
1
5
1200
48000.00
0.0000
19.68
1
4
9951
47999.79
0.0004
48
4
8
1920
48000.00
0.0000
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