CT7302
CT7302 is audio SRC bridge manufactured by Comtrue.
Description
The CT7302/CT5302 is a single chip dual channel audio digital to digital bridge with sample rate converter. The chip also provides System Management Bus 1.0 (also refer the I2C specification) for programming device function. In all system application, I2C configure is needed. Power on initial is mute.
Features
- SPDIF support up to 768 KHz / 32 bits mode.
- I2S support up to 768 KHz / 32 bits mode.
- DSD support 1x/2x/4x/8x mode.
- Do P support 1x/2x/4x mode, through I2S.
- Do P support 1x/2x/4x mode, through SPDIF
- PCM SRC / ASRC fully support 32 KHz ~ 768 KHz.
- PCM / DSD / Do P to PCM / DSD / Do P converter with SRC / ASRC.
- I2S Rx standard / left justified slave mode. I2S Tx standard / left justified master/slave mode.
- Basic auto De-pop function.
- I2C interface. / Interrupt function. / Full function software mode support. / Software Power Down feature
.
- Crystal reference clock / MCLK / Do P / Mute status output.
- Auto De-emphasis 32 KHz / 44.1 KHz / 48 KHz.
- Auto detecting PCM / Do P format.
- Auto detecting I2S / DSD interface.
- Volume control with fading in/out. (+18d B ~ -110d B step 1/32 d B)
- SRC / ASRC 32 bits dynamic range (192d B), THD+N (-174d B).
XTAL_IN XTAL_OUT
XTAL
CLOCK. GEN
ASRC_REF_CLK_IN
SPDIF_[0:4]_IN VREF
SPDIF channel selector
SPDIF CDR
SPDIF Decoder
DOP decoder
I2S_0_SCLK / DSD_[0:2]_SCLK_IN I2S_0_SDATA / DSD_[0:2]_RIGHT_SDATA_IN I2S_0_SLR / DSD_[0:2]_LEFT_SDATA_IN
I2S/DSD channel selector
I2S Decoder
DOP decoder
POR_IN_[0:6] I2C_SCLK I2C_SDATA
DSD Decoder
DC CTRL
I2C
Reg.
PCM2PCM DSD2DSD PCM2DSD DSD2PCM SRC Volume
CLK_REF Output...
