NUMICRO-SDK Nuvoton Technology Corporation of America, NUMICRO-SDK Datasheet - Page 476

• Manufacturer Part Number: NUMICRO-SDK
• Description: KIT EVAUATION NUC100/120/130/140
• Manufacturer: Nuvoton Technology Corporation of America
• Series: NuMicro™r
• Type: MCUr

Specifications of NUMICRO-SDK

• Contents: Board, Cable, CD, Nu-Link
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: NUC100, NUC120, NUC130, NUC140

I
Register
I2S_CLKDIV I2S_BA+0x04
Bits
[31:16]
[15:8]
[7:3]
[2:0]
2
S Clock Divider (I2S_CLKDIV)
31
23
15
7
NuMicro™ NUC100 Series Technical Reference Manual
Offset
Descriptions
Reserved
BCLK_DIV [7:0]
Reserved
MCLK_DIV[2:0]
30
22
14
6
Reserved
R/W
R/W
Reserved
Bit Clock Divider
If I
Software can program these bits to generate sampling rate clock frequency.
F_BCLK = F_I2SCLK /(2x(BCLK_DIV + 1))
Reserved
Master Clock Divider
If chip external crystal frequency is (2xMCLK_DIV)*256fs then software can program
these bits to generate 256fs clock frequency to audio codec chip. If MCLK_DIV is set to
0, MCLK is the same as external clock input.
For example, sampling rate is 24 kHz and chip external crystal clock is 12.288 MHz,
set MCLK_DIV=1.
F_MCLK = F_I2SCLK/(2x(MCLK_DIV)) (When MCLK_DIV is >= 1 )
F_MCLK = F_I2SCLK (When MCLK_DIV is set to 0 )
29
21
13
5
2
S operates in master mode, bit clock is provided by NuMicro™ NUC100 series.
Description
I
2
S Clock Divider Control Register
28
20
12
BCLK_DIV [7:0]
4
- 476 -
Reserved
Reserved
27
19
11
3
Publication Release Date: Dec. 22, 2010
26
18
10
2
MCLK_DIV[2:0]
25
17
9
1
Revision V1.06
Reset Value
0x0000_0000
24
16
8
0