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UPD30121 Datasheet(PDF) 23 Page - NEC

Part # UPD30121
Description  VR4121TM 64-/32-BIT MICROPROCESSOR
PDF  76 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD30121 Datasheet(HTML) 23 Page - NEC

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Data Sheet U14691EJ1V0DS00
23
µµµµPD30121
(3/3)
Pin Name
Internal
Processing
External
Processing
Drive
Capability
I/O Circuit
Type
Recommended
Connection of
Unused Pin
KPORT (0:7)
Schmitt input,
Pull down
−−
B
Leave open
KSCAN (0:11)/
GPIO (32:43)
−−
40 pF
A
Leave open
AUDIOOUT
−
Note 1
−
F
Leave open
TPX (0:1)
−−
120 pF or more
C
Leave open
TPY1
−−
120 pF or more
D
Leave open
TPY0
−−
120 pF or more
C
Leave open
ADIN (0:2)
−−
−
E
Leave open
AUDIOIN
−−
−
E
Leave open
GPIO (0:3)
Schmitt input, Note 2
Note 2
40 pF
B
Connect to VDD or
GND via resistor
SRAS#/GPIO4
Schmitt input, Note 2
Note 2
40 pF
B
Connect to VDD or GND
SCAS#/GPIO5
Schmitt input, Note 2
Note 2
40 pF
B
Connect to VDD or GND
SYSDIR/GPIO6
Schmitt input, Note 2
Note 2
40 pF
B
Leave open
SPOWER/GPIO7
Schmitt input, Note 2
Note 2
40 pF
B
Connect to VDD or GND
GPIO (8:14)
Schmitt input, Note 2
Note 2
40 pF
B
Connect to VDD or
GND via resistor
IRING
Schmitt input
Pull down
−
B
Connect to GND
ILCSENSE
−
Pull down
−
A
Connect to GND
OFFHOOK
−−
40 pF
A
Leave open
MUTE
−−
40 pF
A
Leave open
AFERST#
−−
40 pF
A
Leave open
SDI
−
Pull up/Pull down
−
A
Connect to GND
FS
−
Pull up/Pull down
−
A
Connect to GND
SDO
−−
40 pF
A
Leave open
HSPSCLK
−
Note 3
−
A
Connect to GND
TELCON
−−
40 pF
A
Leave open
HC0
−−
40 pF
A
Leave open
HSPMCLK
−−
40 pF
A
Leave open
OPD#
−−
40 pF
A
Leave open
LEDOUT#
−−
40 pF
A
Leave open
DBUS32/GPIO48
−
Pull up/Pull down
40 pF
A
−
MIPS16EN
−
Pull up/Pull down
40 pF
A
−
SMODE1/GPIO49
−
Pull up/Pull down
−
A
−
SMODE2
−
Pull up/Pull down
−
A
−
Notes 1.
Connect an operation amplifier which has high-impedance input characteristics, since the output level
of AUDIOOUT pin varies according to the external impedance.
2.
If internal pull-up or pull-down resistors are used in GPIO (0:3), SRAS#/GPIO4, SCAS#/GPIO5,
SYSDIR/GPIO6, SPOWER/GPIO7, GPIO (8:14) pins switch between pull up, pull down, and open by
software.
If an internal pull-up or pull-down resistor is not used, then provide an external pull-up or pull-down
resistor.
3.
Input a synchronous clock from CODEC.



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