Comtrue CT-7301 Handmatig - Pagina 5
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Comtrue Inc.
Pin Name
POR[6:4]
POWER_ON_LATCH[6:4] = SEL_SRC_MODE[2:0]
POR[7]
POWER_ON_LATCH[7] = I2S_STDZ_LEFT
POR[9:8]
POWER_ON_LATCH[9:8] = I2C_ID[1:0]
Version 0.9
Description
01 = 11.2896MHz
10 = 12.288MHz
11 = 14.318MHz
SRC mode selection
0 = Async SRC mode refer to external Fs signal.
1 = Async SRC mode refer to external Fs signal + SRC ratio (x1/2/4/8/16)
2 = Async SRC mode refer to external MCLK + SRC ratio (x1/2/4/8/16)
3 = Async SRC mode refer to internal PLL + frequency selector
4 = Sync SRC mode refer to input Fs + frequency selector
5 = Sync SRC mode refer to input Fs + SRC ratio(x1/2/4/8/16)
6, 7 = bypass SRC
Output Fs in SRC Ratio mode (refers to J25 settings)
Value
0
1
2
3
4~7
Frequency select table (refers to J25 settings)
I2S Rx/Tx default format selection
0 = I2S standard format
1 = I2S left justified
I2C serial interface device ID selection
00 = 0x20
01 = 0x22
10 = 0x24
Copyright © 2014 comtrue Inc. All rights reserved.
Function Table
base Fs=32KHz
x1
32KHz
x2
64KHz
x4
128KHz
x8
256KHz
x16
512KHz
Value
Output Fs
0
32KHz
1
32KHz
2
44.1KHz
3
48KHz
4
64KHz
5
88.2KHz
6
96KHz
7
128KHz
- 5 -
CT-7301 demo board manual
base Fs=44.1KHz
base Fs=48KHz
44.1KHz
48KHz
88.2KHz
96KHz
176.4KHz
192KHz
352.8KHz
384KHz
705.6KHz
768KHz
Value
Output Fs
8
176.4KHz
9
192KHz
A
256KHz
B
352.8KHz
C
384KHz
D
512KHz
E
705.6KHz
F
768KHz
11/17/2014