MSM66P54-01 Ver la hoja de datos (PDF) - Oki Electric Industry
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MSM66P54-01 Datasheet PDF : 22 Pages
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––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– s Pin Descriptions s
PIN DESCRIPTIONS
MSM66P54-03/-04 Pin Descriptions (Standalone Mode)
Pin Name
RESET
BUSY
XT/RC
AOUT
GND
VDD
OSC1
OSC2
OSC3
RND
TEST
SW0 ~ SW3
A0 ~ A2
VPP
PGM
I/O
Function
I
Reset. Setting this pin to “L” puts the device in standby status. At this time, oscillation stops, AOUT is pulled to GND,
and the device is initialized. The MSM6650 Family devices have an internal power-on reset. To operate the power-on
reset correctly, power should ramp up within 1 ms. If this is not possible, apply a RESET pulse when power is turned
on. This pin has an internal pull-up resistor.
O Busy. This pin outputs a “L” level during playback. At power-on, this pin is at “H” level.
I X’tal/RC selectable pin. Set to “H” level when using ceramic/crystal oscillation. Set to “L” level when using RC
oscillation.
O Sound output. This is the synthesized output pin of the internal low-pass filter.
– Ground.
– Power supply.
I Oscillator 1. This pin is a ceramic/crystal oscillator connection pin when using ceramic or crystal oscillation. This pin
is an RC connection pin when using RC oscillation. When using an external clock, use this pin as the clock input.
O Oscillator 2. This pin is a ceramic/crystal oscillator connection pin when using a ceramic or crystal oscillator. This is
an RC connection pin when using RC oscillation. Leave open if using an external clock. OSC2 outputs a “L” level in
standby status.
O Oscillator 3. Leave open if using a ceramic/crystal oscillator. This pin is the RC connection pin when using RC
oscillation. When RC oscillation is selected, OSC3 outputs a “H” level in standby status.
I Random Playback. Random playback starts when the RND pin is set to a “L” level. At the fall of RND, addresses from
the random address playback circuit inside the IC are fetched. Set to a “H” level if random playback is not used. This
pin has an internal pull-up resistor.
I Test Mode. Set to “H” level. This pin has an internal pull-up resistor.
I Phrase Inputs. These pins are phrase input pins corresponding to playback. If the input changes, SW0 ~ SW3 pins
capture address data after 16 ms and speech playback commences. These pins have internal pull-down resistors.
I Phrase Inputs. Phrase input pins corresponding to playback. The A0 input becomes invalid when the random playback
function is used.
– Power-supply voltage for programming the on-chip OTP ROM. Set to a “H” level or open during normal operation.
I Interface pin for AR76-202 Speech Development System. Set to a “L” level or open during normal operation. This pin
has an internal pull-down resistor.
MSM66P54-01/-02 Pin Descriptions (Microcomputer Interface Mode)
Pin Name
RESET
BUSY
NAR
AOUT
GND
I/O
I
O
O
O
–
Function
Reset. Setting this pin to “L” puts the device in standby status. At this time, oscillation stops, AOUT is pulled to GND,
and the device is initialized. The MSM6650 Family devices have an internal power-on reset. To operate the power-on
reset correctly, power should ramp up within 1 ms. If this is not possible, apply a RESET pulse when power is turned
on. This pin has an internal pull-up resistor.
Busy. This pin outputs a “L” level during playback. At power-on, this pin is at “H” level.
Next Address Request. The CMD and ST input is valid when NAR is at a “H” level. When the CH pin is at “H” level,
NAR becomes a Channel 1 status signal. When the CH pin is at “L”, NAR becomes a Channel 2 status signal. This pin
indicates whether the register that latches the addresses of I0~I6 in the Address & Command Controller (refer to the
block diagram) is empty or not. At “H” level, it is empty and new address data may be applied. At power-on, NAR is
“H” level.
Analog Sound Output. Either the D/A converter or the low-pass filter output can be selected by a command input.
Ground.
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