UPD9971 datasheet(22/112 Pages) RENESAS

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µPD9971

Data Sheet S17455EJ2V0DS

Table 2-2 Pin Statuses in ASIO Block

AMS = 0 (Slave Mode)

AMS = 1 (Master Mode)

(STASI, STASO)

Pin Function

(0, 0)

(1, 1)

(1, 0)

(0, 1)

(0, 0)

(1, 1)

(1, 0)

(0, 1)

BCLK

Bit synchronization I/O

for audio

Input

(Internal:

Low)

Input

Low

Output

LRCLK

Frame synchronization I/O

for audio

Input

(Internal:

Low)

Input

Low

Output

ASI

Audio serial data input

−

Input

−

Input

−

ASO

Audio serial data output

Hi-Z

Output

Hi-Z

Output

Hi-Z

Output

Hi-Z

Output

Table 2-3 Pin Statuses in MSIO Block

MMS = 0 (Slave Mode)

MMS = 1 (Master Mode)

(STMSI, STMSO)

Pin Function

(0, 0)

(1, 1)

(1, 0)

(0, 1)

(0, 0)

(1, 1)

(1, 0)

(0, 1)

MBCLK

Bit synchronization I/O

for PCM sound generator-

core

Input

(Internal:

Low)

Input

Low

Output

MEN

Frame synchronization I/O

for PCM sound generator-

core

Input

(Internal:

Low)

Input

Low

Output

MSI

PCM sound generator-core

serial data input

−

Input

−

Input

−

MSO

PCM sound generator-core

serial data output

Hi-Z

Output

Hi-Z

Output

Hi-Z

Output

Hi-Z

Output

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