BH3874AKS2 查看數據表（PDF） - ROHM Semiconductor

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BH3874AKS2

Sound processor IC

ROHM Semiconductor 

Audio ICs

BH3874AKS2

When transmitting more than one piece of data at once, we request the following serial control transmission.

(1) Timing of serial data and latch

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

8bit

DATA

[1]

[2]

[3]

Cf. (2)

LATCH

α

DATA&LATCH

β

γ

β

γ

β

γ

Fig.3

TIme

Parameter

Time

α Latch width

More than 2.0µs

β

The time which transmits more than one piece of

data at once

Less than 2.5ms

The time which sends more than one piece of the

γ

following data after sending more than one pirce

More than 100ms

of data (When the capacitor of 33 pin is 0.22µF.)

(2) About the order which transmits more than one piece of DATA at once

When transmitting more than one piece of DATA including [1], [2] or [3] at once, transmit DATA of [1], [2] or [3] of the

data format first.

In case of transmitting some data from [1] until [8], transmit only necessary DATA in order from [1].

(3) About DATA needing the timing of (1)

DATA needing the timing of (1) are DATA [1], [2] and [3]. Even if one data of DATA [1], [2] and [3] is transmitted, follow

the timing of (1).

In case of transmitting some data from [4] until [8], the timing of (1) need not be followed. In the case, there are no

problems if the constant of timing chart in the preceding page is satisfied.

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