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CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
Page
37
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60
www.cmedia.com.tw
Rev.1.7
Copyright© C-Media Electronics Inc.
6.8.10
I2C Master Clock Period Setting Register
Address: 0x96
Bits R/W
Bit Mnemonic
Description
Default
7
W
CHG_ENABLE
MCU can program I2C clock; 1
’
b1: enable
1
’
b0
(POR)
6
R/W
LD_SEL
MCU download select
1
’
b0 : SPI download
1
’
b1 : I2C download
1
’
b0
(POR)
5-0
W
CHG_FREQ
Set I2C-master clock period.
The clock
period=83.3*5*(C1)
Ex: CHG_FREQ = 6
’
d48
I2C Clock
Period=83.3*5*(48+1)=20408ns
HW limitation CHG_FREQ >= 6
’
h3
6
’
h0
(POR)