AK7750 Datasheet, PDF (32/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
2) SMODE: Slave, Master Mode Select pin
Set the input /output of LRCLK and BITCLK.
a) Slave Mode : SMODE = “L “
• EESEL = “ L “
LRCLK_I (1fs) & BITCLK_I (64fs) become inputs.
LRCLK_I,BITCLK_I are directly output on LRCLK_O and BITCLK_O respectively. Output can be set via
a control register.
Note) 48fs can be input on BITCLK_I pin for modes other than hands-free mode or when CKSX = “L”
(64fs corresponds to hands-free mode and CKSX = “L”).
CD etc
(Master Equip.)
LRCLK_I
BITCLK_I
SMODE
LRCLK_O
BITCLK_O
DAC etc.
(Slave Equip.)
CLKO
XTI
Clk Gen.
AK7750
At CKSX = “H”, XTI and LRCLK_I must be synchronized, but need not be in phase.
At CKSX = “L”, BITCLK_I and LRCLK_I must be synchronized.
• EESEL = “H”
LRCLK (1fs) and BITCLK (64fs) become inputs.
At CKSX = “H”, XTI and LRCLK must be synchronized, but need not be in phase.
At CKSX = “L”, BITCLK and LRCLK must be synchronized.
Note) 48fs can be input on BITCLK pin except in hands-free mode (64fs corresponds to hands-free
mode).
[MS0296-E-00]
32
2005/03