LC786800E Datasheet, PDF (19/26 Pages) Sanyo Semicon Device – Compressed Audio signal Processor IC with USB host controller

Digital Audio Data Interface
LC786800E
• Digital Audio Interface Format
Mode
Input
IIS
MSB first right justified
MSB first left justified
Output
IIS
MSB first right justified
MSB first left justified
Data Length
16bit
24bit
16bit
24bit
Slot Length
32fs, 48fs, 64fs
32fs, 48fs, 64fs
Fs384 clock
Internal clock
External input clock
Output internal 384fs clock
• Used pins
LRCK
BCK
DATA
Fs384 clock
De-emphasis
GP30
GP31
GP32
GP33
Input
GP40
GP41
GP42
GP43
GP14, GP46
GP52
GP51
GP50
GP53
GP30
GP31
GP32
GP33
Output
GP40
GP41
GP42
GP43
-
GP52
GP51
GP50
GP53
Note : There is a priority level about Digital Audio input setting for the pins from GP30 to GP33 and the pins from
GP40 to GP43 and the pins from GP50 to GP53. The priority level is as follows.
(1) GP30 to GP33 > (2) GP40 to GP43 > (3) GP50 to GP53
Only the setting for the pins from GP30 to GP33 will become effective even if all the pins above are set to be
the Digital Audio input pins at the same time. Set the Digital Audio input pins only to either of the pins from
GP30 to GP33 or the pins from GP40 to GP43 or the pins from GP50 to GP53 if necessary.
• Others
• Audio output can support 3 types of Fs (32kHz/44.1kHz/48kHz) when 12MHz is used to the oscillator.
When 16.9344MHz is used to the oscillator, only Fs=44.1kHz is supported.
• During external audio input, emphasis signal is input from GP14/GP46.
Digital Audio Data Input timing
tFCKIH tFCKIL
1/fFCKI
Fs384ck
(=Fs384 clock)
tALRIH tALRIS
LRCK
BCK
tABKIH
tABKIL
1/fABCKI
DATA
Parameter
Fs384 clock frequency
Fs384 clock "H" level width
Fs384 clock "L" level width
Bit clock frequency
Bit clock "H" level width
Bit clock "L" level width
Setup time for LRCK input
Hold time for LRCK input
Setup time for DATA input
Hold time for DATA input
tADTIS tADTIH
Symbol
fFCKI
tFCKIH
tFCKIL
fABCKI
tABKIH
tABKIL
tALRIS
tALRIH
tADTIS
tADTIH
Pin Names
Fs384ck
Fs384ck
Fs384ck
BCK
BCK
BCK
LRCK, BCK
LRCK, BCK
DATA, BCK
DATA, BCK
min
typ
20
20
120
120
30
30
30
30
max
20.0
3.3
unit
MHz
ns
ns
MHz
ns
ns
ns
ns
ns
ns
No.A2082-19/26