UPD30121 NEC [NEC], UPD30121 Datasheet - Page 23

• Manufacturer Part Number: UPD30121
• Description: VR4121TM 64-/32-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

KPORT (0:7)
KSCAN (0:11)/
GPIO (32:43)
AUDIOOUT
TPX (0:1)
TPY1
TPY0
ADIN (0:2)
AUDIOIN
GPIO (0:3)
SRAS#/GPIO4
SCAS#/GPIO5
SYSDIR/GPIO6
SPOWER/GPIO7
GPIO (8:14)
IRING
ILCSENSE
OFFHOOK
MUTE
AFERST#
SDI
FS
SDO
HSPSCLK
TELCON
HC0
HSPMCLK
OPD#
LEDOUT#
DBUS32/GPIO48
MIPS16EN
SMODE1/GPIO49
SMODE2
Notes 1.
Pin Name
2.
3.
Connect an operation amplifier which has high-impedance input characteristics, since the output level
of AUDIOOUT pin varies according to the external impedance.
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.
Input a synchronous clock from CODEC.
Schmitt input, Note 2
Schmitt input, Note 2
Schmitt input, Note 2
Schmitt input, Note 2
Schmitt input, Note 2
Schmitt input, Note 2
Schmitt input,
Schmitt input
Processing
Pull down
Internal
Pull up/Pull down
Pull up/Pull down
Pull up/Pull down
Pull up/Pull down
Pull up/Pull down
Pull up/Pull down
Processing
Pull down
Pull down
External
Note 1
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 3
Data Sheet U14691EJ1V0DS00
120 pF or more
120 pF or more
120 pF or more
Capability
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
40 pF
Drive
I/O Circuit
Type
B
A
F
C
D
C
E
E
B
B
B
B
B
B
B
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
Connect to V
Connect to V
Connect to V
Connect to V
Connect to V
GND via resistor
GND via resistor
Connect to GND
Connect to GND
Connect to GND
Connect to GND
Connect to GND
Recommended
Connection of
PD30121
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Unused Pin
DD
DD
DD
or GND
or GND
or GND
DD
DD
(3/3)
or
or
23