ak4101a AKM Semiconductor, Inc., ak4101a Datasheet - Page 13

• Manufacturer Part Number: ak4101a
• Description: Quad Outputs 192khz 24-bit Dit
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
n Block Start Timing
Normal mode
In normal mode (TRANS pin = “0”), the block start signal is an output. It goes “H” two bit cycle after the beginning of
channel 2 of frame 0 in each block, and stays “H” for the first 32 frames.
Audio routing mode (transparent mode)
In audio routing mode (transparent mode) (ANS pin = TRANS pin = “1”), the block start becomes an input. Except in
I
positive BICK edge preceding the transition of an LRCK indicating the left channel will result in the current left channel
being taken as the first sub frame of the current block. See Figure 3 below.
MS0250-E-00
2
S mode, a block start signal sampled any time from the first positive BICK edge of the previous left channel to the
LRCK
LRCK
BICK
(except I
(I
2
S)
LRCK
SDTI
SDTI
BLS
C (or U,V)
(except I
(I
2
S)
2
S)
A block start signal arriving during “(1)” period will result in the usage of “nth channel 1” as the
first sub-frame of the block.
2
S)
Figure 2. Audio routing mode timing (AKMODE pin = “1”)
C(R191)
(n-1)th channel 1
(n-1)th channel 1
Figure 3. Block start timing in audio routing mode
R190
L191
C(L0)
L191
R191
C(R0)
R191
L0
C(L1)
- 13 -
(1)
L0
R0
C(L31)
L30
R30
nth channel 1
nth channel 1
C(R31)
R30
L31
C(L32)
L31
R31
[AK4101A]
2003/07