参数资料
型号: TLV320AIC33IZQER
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA80
封装: 5 X 5 MM, ROHS COMPLIANT, PLASTIC, VFBGA-80
文件页数: 22/93页
文件大小: 1427K
代理商: TLV320AIC33IZQER
www.ti.com ........................................................................................................................................... SLAS480B – JANUARY 2006 – REVISED DECEMBER 2008
When the PLL is disabled,
Fsref = CLKDIV_IN / (128 × Q)
Where Q = 2, 3, …, 17
CLKDIV_IN can be MCLK, BCLK, or GPIO2, selected by register 102, bits D7-D6.
NOTE – when NDAC = 1.5, 2.5, 3.5, 4.5, or 5.5, odd values of Q are not allowed. In this mode, MCLK can be as
high as 50 MHz, and Fsref should fall within 39 kHz to 53 kHz.
When the PLL is enabled,
Fsref = (PLLCLK_IN × K × R) / (2048 × P), where
P = 1, 2, 3,…, 8
R = 1, 2, …, 16
K = J.D
J = 1, 2, 3, …, 63
D = 0000, 0001, 0002, 0003, …, 9998, 9999
PLLCLK_IN can be MCLK or BCLK, selected by Page 0, register 102, bits D5-D4
P, R, J, and D are register programmable. J is the integer portion of K (the numbers to the left of the decimal
point), while D is the fractional portion of K (the numbers to the right of the decimal point, assuming four digits of
precision).
Examples:
If K = 8.5, then J = 8, D = 5000
If K = 7.12, then J = 7, D = 1200
If K = 14.03, then J = 14, D = 0300
If K = 6.0004, then J = 6, D = 0004
When the PLL is enabled and D = 0000, the following conditions must be satisfied to meet specified
performance:
2 MHz
≤ ( PLLCLK_IN / P ) ≤ 20 MHz
80 MHz
≤ (PLLCLK _IN × K × R / P ) ≤ 110 MHz
4
≤ J ≤ 55
When the PLL is enabled and D
≠0000, the following conditions must be satisfied to meet specified performance:
10 MHz
≤ PLLCLK _IN / P ≤ 20 MHz
80 MHz
≤ PLLCLK _IN × K × R / P ≤ 110 MHz
4
≤ J ≤ 11
R = 1
Example:
MCLK = 12 MHz and Fsref = 44.1 kHz
Select P = 1, R = 1, K = 7.5264, which results in J = 7, D = 5264
Example:
MCLK = 12 MHz and Fsref = 48.0 kHz
Select P = 1, R = 1, K = 8.192, which results in J = 8, D = 1920
Copyright 2006–2008, Texas Instruments Incorporated
29
Product Folder Link(s): TLV320AIC33
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