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MSM6789A/6789L

PIN DESCRIPTIONS (for MSM6789A (5 V Version)) (Continued)

Symbol

Type

Description

Oscillator Connect. When an external clock is used, input the clock through

this pin. At the power-down state, this pin must be set to the ground level.

TEST

MSM6789A Test. Input a low level to the TEST pin and a high level to the

TEST pin.

TEST

Oscillator Connect. When an external clock is uesd, this pin must be left open.

MSM6789A Test. This pin must be left open.

TMD3-TMD0

TDT7-TDT0

SYNC

I/O

Connect these pins to DQ1 to DQ4 of DRAM at the time of 4-bit

¥ type DRAM

selection. Otherwise these pins must be left open as they are MSM6789A test pins.

TDT3-TDT0

[DQ4]-[DQ1]

I/O

MSM6789A Test. Input a low level.

TST

TCK

TMD4

RPM. This pin outputs a high level during recording or playback operation. The

state of this pin is the same as the contents of the RPM bit of the status register.

RPM

VPM. This pin outputs a high level during standby for voice incoming after the start of

recording by voice triggered starting or unvoiced-part elimination. Also outputs a high

level when the record/playback is stopped temporarily by inputting the PAUSE

command. The state of this pin is the same as the contents of the VPM bit of the

status register.

VPM

NAR. This NAR pin indicates whether the phrase designation by the CHAN command

is enabled or disabled.

In the ROM play back operation, specify the next phrase after verifying that the NAR

pin is at high level and input the START command.

NAR

POP Noise Suppression Select. This pin selects whether the pop noise

suppression circuit is used.

Low level : the pop noise suppression circuit is not used.

High level : the pop noise suppression circuit is used.

The DC level is shifted by the LEV command.

ACON

EXTD. In the record/playback operation by the EXT command, input a high level for

read/write of SBC data. Input a low level for usual command input and status output.

EXTD

MON. This pin outputs a high level while the record/playback operation is being

performed. Outputs a synchronizing clock while record/playback activated by the

EXT command is being performed.

MON

Busy. This pin outputs a high level while a command is being executed. When this

pin is held high, do not apply any data to D0 to D3 pins. The state of this pin is the

same as the contents of the BUSY bit of the status register.

BUSY

36, 37-39,

61, 67-70

9-12

13-20

17-20

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