UPD30121 datasheet(14/76 Pages) NEC

14 / 76 page

Data Sheet U14691EJ1V0DS00

µµµµPD30121

(10) Touch panel/general purpose A/D interface signals

Signal

I/O

Function

TPX (0:1)

I/O

This is an I/O signal that is used for the touch panel. It uses the voltage applied to the X coordinate and

the voltage input to the Y coordinate to detect which coordinates on the touch panel are being pressed.

TPY (0:1)

I/O

This is an I/O signal that is used for the touch panel. It uses the voltage applied to the Y coordinate and

the voltage input to the X coordinate to detect which coordinates on the touch panel are being pressed.

ADIN (0:2)

This is a general-purpose A/D input signal.

(11) General-purpose I/O Signals

Signal

I/O

Function

GPIO (0:3)

I/O

These are maskable power-on factors. After start-up, they are used as ordinary general-

purpose I/O ports.

GPIO4/SRAS#

I/O

See (1) System bus interface signals.

GPIO5/SCAS#

I/O

See (1) System bus interface signals.

GPIO6/SYSDIR

I/O

See (1) System bus interface signals.

GPIO7/SPOWER

I/O

See (1) System bus interface signals.

GPIO8

I/O

These are general-purpose I/O ports.

GPIO (9:12)

I/O

These are maskable power-on factors. After start-up, they are used as ordinary general-

purpose I/O ports.

GPIO (13:14)

I/O

These are general-purpose I/O ports.

GPIO (16:31)/DATA (16:31)

I/O

See (1) System bus interface signals.

GPIO (32:43)/KSCAN (0:11)

See (8) Keyboard interface signals.

GPIO44/DDOUT

See (7) Debug serial interface signals.

GPIO45/DDIN

I/O

See (7) Debug serial interface signals.

GPIO46/DRTS#

See (7) Debug serial interface signals.

GPIO47/DCTS#

I/O

See (7) Debug serial interface signals.

GPIO48/DBUS32

I/O

See (14) Initial setting signals.

GPIO49/SMODE1

I/O

See (14) Initial setting signals.

(12) HSP MODEM interface signals

Signal

I/O

Function

IRING

RING signal detect signal. This pin becomes active when the RING signal is detected.

ILCSENSE

Handset detect signal

OFFHOOK

On-hook relay control signal

MUTE

Modem speaker mute control signal

AFERST#

CODEC reset signal

SDI

Serial input signal from CODEC

Frame synchronization signal from CODEC

SDO

Serial output signal to CODEC

HSPSCLK

Operation clock input of modem interface block for CODEC

TELCON

Handset relay control signal

HC0

CODEC control signal

HSPMCLK

Clock output to CODEC

OPD#

Use this pin for controlling power of CODEC and DAA. This signal is set as active when the power

supply of CODEC and DAA is ON.

UPD30121 Datasheet(PDF) 14 Page - NEC

UPD30121 Datasheet(HTML) 14 Page - NEC

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

Datasheet Download

Link URL