The µPD30121 (VR4121) is one of NEC’s VR SeriesTM RISC (Reduced Instruction Set Computer) microprocessors
and is a high-performance 64-/32-bit microprocessor employing the MIPS
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4121 uses the high-performance, super power-saving VR4120TM as the CPU core, and has many peripheral
The V
functions such as a DMA controller, software modem interface, serial interface, keyboard interface, IrDA interface,
touch panel interface, real-time clock, A/D converter, and D/A converter. Configured with these functions, the
R
4121 is suitable for high-speed battery-driven portable information systems. The external memory bus width can
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be selected from 32 bits and 16 bits, realizing high-speed data transfer.
Detailed function descriptions are provided in the following user’s manual. Be sure to read it before
designing.
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•
4121 User’s Manual (U13569E)
V
FEATURES
• Employs 64-bit MIPS architecture
• Conforms to MIPS III instruction set (deleting FPU,
LL, LLD, SC, and SCD instructions)
• Optimized 6-stage pipeline• Keyboard interface and touch panel interface
ADD (0:25):Address BusLCDCS#:LCD Chip Select
ADIN (0:2):General Purpose Input for A/DLCDRDY:L CD Ready
AFERST#:AFE ResetLEDOUT#:LED Output
AGND:GND for A/DMEMCS16#:Memory Chip Select 16
AUDIOIN:Audio InputMEMR#:Memory Read
AUDIOOUT:Audio OutputMEMW#:Memory Write
DD
AV
:V
BATTINH:Battery InhibitMPOWER:Main Power
BATTINT#:Battery Interrupt RequestMRAS(0:3)#:DRAM Row Address Strobe
BUSCLK:System Bus ClockMUTE:Mute
CGND:GND for OscillatorOFFHOOK:Off Hook
CKE:Clock EnableOPD#:Output Power Down
CLKSEL (0:2):Clock SelectPIUGND:GND for Touch Panel Interface
CLKX1:Clock X1PIUV
CLKX2:Clock X2POWER:Power Switch
CTS#:Clear to SendPOWERON:Power On State
DD
CV
:V
DATA (0:31):Data BusROMCS(0:3)#:ROM Chip Select
DBUS32:Data Bus 32RSTOUT:System Bus Reset Output
DCD#:Data Carrier Dete ctRSTSW#:Reset Switch
DCTS#:Debug Serial Clear to SendRTCRST#:Real-time Clock Reset
DDIN:Debug Serial Data InputRTCX1:Real-time Clock X1
DDOUT:Debug Serial Data OutputRTCX2:Real-time Clock X2
DGND:GND for D/ARTS#:Request to Send
DRTS#:Debug Serial Request to SendRxD:Receive Data
DSR#:Data Set ReadySCAS#:
DTR#:Data Terminal Ready
DVDD
:V
FIRCLK:FIR ClockSDI:HSP Serial Data Input
FIRDIN#:FIR Data InputSDO:HSP Serial Data Output
FS:Frame SynchronizationSEL:IrDA Module Select
GND2, GND3:GroundSHB#:System Hi-Byte Enable
GNDP, GNDPD:Ground for PLLSMODE (1:2):SDRAM Mode
GPIO (0:49):General Purpose I/OSPOWER:SDRAM Power Control
HC0:Hardware Control 0SRAS#:
HLDACK#:Hold Acknowledge
HLDRQ#:Hold RequestSYSDIR:System Bus Buffer Direction
HSPMCLK:HSP Codec Master ClockTELCON:Telephone Control
HSPSCLK:HSP Codec Serial ClockTPX (0:1):Touch Panel X I/O
ILCSENSE:Input Loop Current SensingTPY (0:1):Touch Panel Y I/O
IOCHRDY:I/O Channel ReadyTxD:Transmit Data
IOCS16#:I/O Chip Select 16UCAS#:Upper Column Address Strobe
IOR#:I/O ReadULCAS#:Lower Byte of Upper Column
IOW#:I/O WriteAddress Strobe
IRDIN:IrDA Data InputUUCAS#:Upper Byte of Upper Column
IRDOUT#:IrDA Data OutputAddress Strobe
IRING:Input RingV
KPORT (0:7):Key Code Data InputV
KSCAN (0:11):Key Scan LineWR#:Write
LCAS#:Lower Column Address StrobeZWS#:Zero Wait State
DD
for A/DMIPS16EN:MIPS16 Enable
DD
:V
DD
for OscillatorRD#:Read
DD
for Touch Panel Interface
Column Address Strobe for
SDRAM/SROM
DD
for D/ASCLK:SDRAM/SROM Clock
Row Address Strobe for
SDRAM/SROM
DD
2, VDD3:Power Supply Voltage
DD
P, VDDPD:VDD for PLL
Remark
# indicates active low.
Data Sheet U14691EJ1V0DS00
5
µµµµ
INTERNAL BLOCK DIAGRAM AND EXAMPLE OF CONNECTION OF EXTERNAL BLOCKS
ADD25/SCLKOThis function diff ers depending on how the SMODE (1:2) signal is set.
<When SMODE (1:2) signal = 00>
This is a 25-bit address bus .
<When SMODE (1:2) signal ≠ 00>
This is the operating cloc k for SDRAM and SROM.
ADD (0:24)OThis is a 25-bit address bus. The VR4121 uses this to specify addresses for the SDRAM, SROM,
DRAM, ROM, LCD, or system bus (ISA).
DATA (0:15)I/O This is a 16-bi t dat a bus . The VR4121 uses this to transm it and receive data with a SDRAM , SROM,
DRAM, ROM, LCD, or system bus.
DATA (16:31)/
GPIO (16:31)
LCDCS#OThis is the LCD chip sel ect signal. This s ignal is active when the VR4121 is performing LCD acces s and
RD#OThis i s active when the VR4121 is reading data from the LCD, SDRA M , SROM, DRAM, or ROM.
WR#OThis is active when the VR4121 is writing data to the LCD, SDRAM, or DRAM.
LCDRDYIThis is the LCD ready signal. Set this signal as active when the LCD controller is ready to recei ve
ROMCS (2:3)#OThe function differs wi th the setting of the DBUS32 signal.
ROMCS (0:1)#OThis i s the ROM or SROM chip select signal.
CKEOThis is the SDRAM or SROM c lock enable signal. When using neither SDRAM nor SROM, c onnect to
UUCAS#/
MRAS3#
I/O This function differs depending on how the DBUS32 signal is s et .
<When DBUS32 signal = 1>
This is the high-order 16 bits of the 32-bit data bus.
R
This bus is used for trans m i tting and receiving data between the V
<When DBUS32 signal = 0>
This is a general-purpose I/O port .
high-speed system bus access using the ADD/DATA bus.
access from the V
<When DBUS32 signal = 1>
This becomes the chip s el ect signal for the extended ROM, SROM, DRAM, or SDRAM.
<When DBUS32 signal = 0>
This is the ROM or SROM chip sel ec t signal.
GND or leave open.
OThis functi on di ffers depending on how the DBUS32 signal i s set or types of memory to be accessed.
<When DBUS32 signal = 1>
When accessing DRAM (EDO t ype): This signal is active (UUCAS#) when a valid column address is
output via the ADD bus during ac cess of DATA (24:31) in the 32-bit data bus.
When accessing SDRAM: T hi s is the I/O buffer cont rol signal (UUDQM#) that is used during ac cess
of DATA (24:31) signal in the 32 bi t data bus.
During 32-bit access of LCD/ hi gh-speed system memory: Byte enable signal that is used during
access of DATA (24:31) signal.
<When DBUS32 signal = 0>
When accessing DRAM (EDO t ype): This is the DRAM's RAS signal (MRAS3#). This signal is
active when a valid row address i s output via the ADD bus for the DRA M connected to the high-order
address.
When accessing SDRAM: Thi s is the SDRAM's chi p select signal (CS3#). This signal is active when
a command is issued for the SDRAM connected to the high-order address.
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4121.
4121 and the DRAM and ROM.
(1/3)
8
Data Sheet U14691EJ1V0DS00
µµµµ
PD30121
SignalI/OFunction
ULCAS#/
MRAS2#
MRAS (0:1)#OThis function diff ers depending on the type of memory being accessed.
UCAS#OThis functi on di f fers depending on the type of memory bei ng accessed.
LCAS#OThis function differs depending on the ty pe of memory being accessed.
BUSCLKOThis is the system bus clock. It is used to output the clock that is supplied to the controller on the
SHB#OThis is the system bus high-byte enable signal. During 16-bit system bus access, this signal is active
IOR#OThis is the system bus I/O read signal. It is active when the VR4121 accesses the system bus to read
IOW#OThis is the system bus I/O write signal. It is active when the VR4121 accesses the system bus to write
MEMR#OThis is the system bus memory read signal. It is active when the VR4121 accesses the system bus to
MEMW#OThis is the system bus memory write signal. It is active when the VR4121 accesses the system bus to
ZWS#IThis is the system bus zero wait state signal. Set this signal as acti ve to enable the controller on the
OThis functi on di ffers depending on how the DBUS32 signal i s set and type of memory being ac cessed.
<When DBUS32 signal = 1>
When accessing DRAM (EDO t ype): This signal is act i ve (ULCAS#) when a valid column address i s
output via the ADD bus during ac cess of DATA (16:23) signal i n the 32-bit data bus.
When accessing SRAM: Thi s i s the I/O buffer control signal (ULDQM#) that is used during ac cess of
DATA (16:23) signal in the 32-bit dat a bus.
During 32-bit access of LCD/ hi gh-speed system memory: Byte enable signal that is used during
access of DATA (16:23) signal.
<When DBUS32 signal = 0>
When accessing DRAM (EDO t ype): This is the DRAM's RAS signal (MRAS2#). This signal is
active when a valid row address i s output via the ADD bus for the DRA M connected to the next
highest address after the hi ghest high-order address.
When accessing SDRAM: Thi s is the SDRAM's chi p select signal (CS2#). This signal is active when
a command is issued for the SDRAM connected to the s econd highest high-order address.
<When accessing DRAM (EDO t ype)>
This is the DRAM's RA S-only signal.
<When accessing SDRAM>
This is the SDRAM's chip select signal (CS (0: 1)#).
<When accessing DRAM (EDO t ype)>
This is the DRAM's CA S signal. This signal is active when a valid column addres s is output via the
ADD bus during access of DATA (8:15) signal in the DRAM.
<When accessing SDRAM>
This is the I/O buff er control signal (UDQM#) that is used during access of DATA (8:15) signal.
< During 32-bit access of LCD/ hi gh-speed system memory >
This is the byte enable si gnal that is used during access of DATA (8:15) signal. This signal is active
when a valid address is output via the ADD bus for access to DATA (8:15) signal when the si ze of
the access bus to t he LCD i s 32 bits.
<When accessing DRAM (EDO t ype)>
This is the DRAM's CA S signal. This signal is active when a valid column addres s is output via the
ADD bus during access of DATA (0:7) signal in the DRAM.
<When accessing SDRAM>
This is the I/O buff er control signal (LDQM#) that is used during access of DATA (0:7) signal.
< During 32-bit access of LCD/ hi gh-speed system memory >
This is the byte enable si gnal that is used during access of DATA (0:7) signal.
system bus. Its frequency is determined based on the status of the CLKSEL (0:2) signal. Ordinarily,
the frequency is 1/4 of t he TCl ock frequency. (See
can be changed via the PMU register settings.
when the high-order byte is valid on t he data bus.
data from an I/O port.
data to an I/O port.
read data from memory.
write data to memory.
system bus to be accessed by the V
R
4121 without a wait interval.
(5) RS-232C interface signals
). The frequency
(2/3)
Data Sheet U14691EJ1V0DS00
9
µµµµ
PD30121
(3/3)
SignalI/OFunction
RSTOUTOThis is the system bus reset signal. It is active when the VR4121 resets the system bus controller
(during bus timeout, manipulation of BCUCNTREG1 register, and power-down mode).
MEMCS16#IThi s i s a dynamic bus sizing request signal. Set this signal as active when system bus memory
accesses data in 16-bit wi dth. This signal is inv al i d when 32-bi t wi dth is selected using LCD/hi gh-speed
system bus.
IOCS16#IThis is a dynamic bus s i zing request signal. Set t hi s signal as active when system bus I/O accesses
data in 16-bit width. This s i gnal i s invalid when 32-bit width is s el ected using LCD/high-speed system
bus.
IOCHRDYIThis is the system bus ready signal. Set this signal as active when the system bus controller is ready to
be accessed by the V
HLDRQ#IThis is a hold request signal for the system bus and DRAM bus that is s ent from an external bus mast er.
HLDACK#OThis is a hol d ac knowledge signal for the system bus and DRAM bus that is s ent to an external bus
master.
SRAS#/GPIO4I/O This function differs depending on the type of memory being access ed.
<When accessing DRAM (EDO t ype)>
This is a general-purpose I/O port .
<When accessing SDRAM>
This is the RAS signal for SDRAM and SROM only.
SCAS#/GPIO5I/O This function differs depending on the type of memory being access ed.
<When accessing DRAM (EDO t ype)>
This is a general-purpose I/O port .
<When accessing SDRAM>
This is the CAS signal for SDRAM and SROM only.
SYSDIR/GPIO6I/O This function differs depending on t he type of memory being accessed.
<When accessing DRAM (EDO t ype)>
This is a general-purpose I/O port .
<When accessing SDRAM>
This is the direction c ontrol signal for the buffer used to reduce the DATA bus's load.
SPOWER/
GPIO7
I/O This function differs depending on the type of memory being ac cessed.
<When accessing DRAM (EDO t ype)>
This is a general-purpose I/O port .
<When accessing SDRAM>
This is the SDRAM's power supply control signal.
R
4121.
(2) Clock interface signals
SignalI/OFunction
RTCX1IThis is t he 32.768-kHz oscillator’s input pin. It is connected to one side of a cry stal resonator.
RTCX2OThis is the 32.768-kHz oscillator’s output pin. It is connected t o one s i de of a crystal resonator.
CLKX1IThis is the 18.432-MHz oscillator’s input pin. It is connected to one side of a cry stal resonator.
CLKX2OThis is the 18.432-MHz oscillator’s output pin. It is connected t o one s i de of a crystal resonator.
FIRCLKIThis is the 48-MHz clock input pi n. Fix this at high level when FIR is not used.
10
Data Sheet U14691EJ1V0DS00
µµµµ
PD30121
(3) Battery monitor interface signals
SignalI/OFunction
BATTINH/
BATTINT#
IThis functi on di ffers depending on how the MPOWER signal i s set.
<When MPOWER signal = 0>
BATTINH function
This signal enables/prohibits activation due to power-on.
1 : Enable activation
0 : Prohibit activat i on
<When MPOWER signal = 1>
BATTINT# function
This is an interrupt signal t hat is output when remaining power is low duri ng norm al operations. The
external agent checks the remaining battery power. Activate the signal at this pin if v ol tage sufficient
for operations cannot be supplied.
(4) Initialization interface signals
SignalI/OFunction
MPOWEROT hi s signal indicates the VR4121 is operating. This signal i s i nactive during Hibernate mode.
POWERONOThis signal i ndi c ates the VR4121 is ready to operate. It becomes active when a power-on fact or i s
detected and becomes inact i ve when the BATTINH/BATTINT# s i gnal check operation is completed.
POWERIThis is a VR4121 activation signal.
RSTSW#IThis is a VR4121 reset signal.
RTCRST#IT hi s signal resets RTC. When power is first supplied to a device, the external agent must as sert the
signal at this pin for about 2 s.
Data Sheet U14691EJ1V0DS00
11
µµµµ
PD30121
(5) RS-232C interface signals
SignalI/OFunction
RxDIThis is a rec ei ve data signal. It is used when the RS-232C controller sends s eri al data to the VR4121.
CTS#IThis is a transmit enable signal. Assert this signal when the RS-232C controller is ready to receive
transmission of seri al data.
DCD#/
GPIO15
DSR#IThis is the data set ready signal. Ass ert this signal when the RS-232C cont rol l er i s ready to
TxD/
CLKSEL2,
RTS#/
CLKSEL1,
DTR#/
CLKSEL0
IThis is a carri er det ection signal. Assert this signal when valid s eri al dat a i s being received. It is al so
R
used when detecting a power-on factor for the V
4121.
When this pin is not used for DCD# signal, this pin can be used as an i nterrupt detection functi on for the
GIU unit.
R
receive/transmit serial data between the controller and t he V
4121.
I/O This function differs depending on the operating status.
<During normal operation (output)>
Signals used for serial c om munication
TxD signal :
R
This is a transmit dat a signal. It is used when the V
4121 sends serial data to the RS -232C
controller.
RTS# signal :
R
This is a transmit reques t signal. This signal is asserted when the V
4121 is ready to receive seri al
data from the RS-232C controller.
DTR# signal :
R
This is a terminal equipment ready signal. This signal is asserted when the V
4121 is ready to
transmit or receive seri al data.
<When RTC reset (input)>
Signals (CLKSEL (2:0) signal) used to set the CPU core operation frequency, BUSCLK si gnal
frequency, and internal bus c l ock frequency. These signal s are sampled when the RTCRST# signal
changes from low level to hi gh l ev el .
The relationships between the
CLKSEL (2:0) signal setting and each cl ock frequency are shown below.
Do not set CLKSEL (2:0) = 111.
The settings CLKSEL (2:0) = 110 and 101 are only guaranteed for the 168 MHz model. Do not apply
2.
these settings to the 131 MHz model.
Data Sheet U14691EJ1V0DS00
µµµµ
PD30121
(6) IrDA interface signals
SignalI/OFunction
IRDINIThis is an IrDA serial data input signal. It is used when the VR4121 sends serial data to the I rDA
controller, for both FIR and SIR. If the IrDA control l er used is an HP product, however, t hi s signal should
be used for only SIR.
FIRDIN#/SELI/O This function differs according to the IrDA controller used.
<HP’s controller>
FIRDIN#: It is an FIR rec ei ve data input signal.
<TEMIC’s controller>
SEL: It is an output port for external FIR/SIR s witching.
<SHARP’s controller>
Use is prohibited.
IRDOUT#OThis is the IrDA serial dat a output signal. It is us ed when the IrDA controller sends s eri al data from the
R
4121.
V
(7) Debug serial interface signals
SignalI/OFunction
DDOUT/
GPIO44
DDIN/
GPIO45
DRTS#/
GPIO46
DCTS#/
GPIO47
OThis is the debug serial data output signal. It is used when the VR4121 sends serial data to an ext ernal
debug serial controller.
When this pin is not used for the DDOUT signal, it can be used as a general -purpose output port.
I/O This is the debug serial data i nput signal. It is used when an external debug serial data controller s ends
R
serial data to the V
When this pin is not used for the DDIN signal, it can be used as a general-purpose output port.
OThis is a transmission request s i gnal . The VR4121 asserts this si gnal before sending serial data.
When this pin is not used for the DRTS# signal, it can be used as a general-purpose output port.
I/O This is a transmit ac knowledge signal. The VR4121 asserts this si gnal when i t is ready to receive
transmitted serial dat a.
When this pin is not used for the DCTS# signal, it can be used as a general-purpose output port.
4121.
(8) Keyboard interface signals
SignalI/OFunction
KPORT (0:7)IThis is a keyboard scan data i nput signal. It is used to scan for pressed keys on t he keyboard.
KSCAN (0:11)/
GPIO (32:43)
OThese signal are used as keyboard scan data output signals and a general-purpose output port. The scan
line is set as acti ve when scanning for pressed key s on the keyboard.
Signals that are not used f or K SCAN signals can be used as a general-purpos e output port.
(9) Audio interface signals
SignalI/OFunction
AUDIOINIThis pin is the audio input signal.
AUDIOOUTOThis is an audi o output signal. Analog signals that have been converted via the on-chip 10-bit D/A
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 c oordi nates 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 c oordi nates on the touch panel are being pressed.
ADIN (0:2)IThi s is a general-purpose A/D input si gnal .
(11) General-purpose I/O Signals
SignalI/OFunction
GPIO (0:3)I/O These are maskable power-on f actors. After start-up, they are used as ordinary general-
purpose I/O ports.
See
GPIO4/SRAS#I/O
GPIO5/SCAS#I/O
GPIO6/SYSDIRI/O
GPIO7/SPOWERI/O
GPIO8I/O Thes e are general -purpose I/O ports.
GPIO (9:12)I/O Thes e are m askable power-on factors. After start-up, they are used as ordinary general-
GPIO (13:14)I/O These are general -purpose I/O ports.
GPIO (16:31)/DATA (16:31)I/O
GPIO (32:43)/KSCAN (0:11)O
GPIO44/DDOUTO
GPIO45/DDINI/O
GPIO46/DRTS#O
GPIO47/DCTS#I/O
GPIO48/DBUS32I/O
GPIO49/SMODE1I/O
(1) System bus interface signals
See
(1) System bus interface signals
See
(1) System bus interface signals
See
(1) System bus interface signals
purpose I/O ports.
See
(1) System bus interface signals
See
(8) Keyboard interface signals
See
(7) Debug serial interface signals
See
(7) Debug serial interface signals
See
(7) Debug serial interface signals
See
(7) Debug serial interface signals
See
(14) Initial setting signals
See
(14) Initial setting signals
.
.
.
.
.
.
.
.
.
.
.
.
(12) HSP MODEM interface signals
SignalI/OFunction
IRINGIRING si gnal detect signal. This pin bec om es active when the RING signal i s detected.
ILCSENSEIHandset detect si gnal
OFFHOOKOOn-hook relay control signal
MUTEOModem speaker mut e control signal
AFERST#OCODEC reset s i gnal
SDIISerial i nput signal from CODEC
FSIFrame synchronization signal from CODEC
SDOOSerial output signal to CODEC
HSPSCLKIOperation clock input of modem interface block for CODEC
TELCONOHandset relay c ontrol signal
HC0OCODEC control signal
HSPMCLKOClock output to CODEC
OPD#OUse this pin for controlling power of CODEC and DAA. This signal is set as act i v e when the power
supply of CODEC and DAA is ON.
14
Data Sheet U14691EJ1V0DS00
(13) LED interface signal
(
)
SignalI/OFunction
LEDOUT#OThis is an output signal for lighting LEDs.
(14) Initial setting signals
Signal NameI/OFunction
µµµµ
PD30121
DBUS32/
GPIO48
SMODE1/
GPIO49
SMODE2I
I/O
I/O
The function differs depending on the operating status.
<During normal operation (output)>
This can be used as a general-purpose output port.
<After an RTC reset (input)>
This is the switchi ng signal for the data bus width. Thi s signal is sampled at 1RTC c l oc k cycle
after the RTCRST# signal changes f rom l ow l evel to high level.
1: The data bus has a 32-bit width.
0: The data bus has a 16-bit width.
The function differs depending on the operating status.
<During normal operation (output)>
This can be used as a general-purpose output port.
< After an RTC reset (input)>
This is a switching s i gnal for the memory being used. It i s used in combination with t he
SMODE2 signal. This s i gnal i s sampled at 1RTC clock cycle after the RTCRST# signal
changes from low level to hi gh l ev el .
This a switching signal for the memory being used. It i s used in combination with t he S MODE1
signal. This signal is sampled when the RTCRST# signal changes from low level to high level.
The relation between the SMODE (2:1) s i gnal and the memory being used is shown below.
SMODE (2:1) signalUsed Memory
11
10
01
00
ROM: SROM
RAM: SDRAM
ROM: Flash memory, PageROM , ordinary ROM
RAM: SDRAM
ROM (boot bank): Flash memory, PageROM, ordinary ROM
ROM (except boot bank): SROM
RAM: SDRAM
ROM: Flash memory, PageROM , ordinary ROM
RAM: DRAM
EDO type
MIPS16ENI
This pin enables the use of MI PS16 instructions. Thi s signal is sampled at 1RTC clock cycle after
the RTCRST# signal changes from l ow l evel to high level.
1: Enables the use of MI P S16 instructions.
0: Disables the use of MIPS16 instructions .
Data Sheet U14691EJ1V0DS00
15
µµµµ
PD30121
(15) Dedicated VDD and GND signals
Signal NamePower-Supply SystemFunction
VDDP2.5 VDedicated VDD for the PLL analog unit
GNDP2.5 VDedicated GND for the PLL analog unit
VDDPD2.5 VDedicated VDD for the PLL digital unit. I ts function is identi cal to VDD2.
GNDPD2.5 VDedicated GND for the PLL digital unit. Its function is identic al to GND2.
DD
CV
CGND3.3 VDedicated GND for the oscillator
DD
DV
DGND3.3 VDedi cated GND for D/A converter. The voltage applied to this pin
DD
AV
AGND3.3 VDedicated GND for the A/D converter. The volt age appl i ed to this pin
DD
PIUV
PIUGND3.3 VDedicated GND for touch-sensitive panel int erface
VDD22.5 VNormal 2.5-V system V
GND22.5 VNormal 2.5-V system GND
VDD33.3 VNormal 3.3-V system V
GND33.3 VNormal 3.3-V system GND
3.3 VDedicated VDD for the oscillator
3.3 VDedicated VDD for the D/A converter. The voltage applied to this pin
becomes the maximum of the analog output of AUDIOOUT signal.
becomes the minimum of the analog output of AUDIOOUT signal.
3.3 VDedicated VDD for the A/D converter. The voltage applied to this pin
becomes the maximum v ol tage that can be detected by t he A /D interface
signals (8 lines).
becomes the minimum v ol t age that can be detected by the A/D interface
signals (8 lines).
3.3 VDedicated VDD for touch-sensitiv e panel i nterface
DD
DD
Caution The VR4121 has two types of power supplies. There are no restrictions as to the sequence in which
these power supplies are applied. However, do not apply one type of power for more than one
second while the other power supply is not applied.
16
Data Sheet U14691EJ1V0DS00
1.2 Pin Status in Specific Status
Pin NameAfter Reset by
the RTC Reset
ADD25/SCLK0
ADD (0:24)00
DATA (0:15)00
DATA (16:31)/
GPIO (16:31)
LCDCS#Hi -Z11Hi-Z1
RD#Hi-Z11Hi-ZHi-Z
WR#Hi-Z11Hi-ZHi-Z
LCDRDY
ROMCS (2:3)#Hi-Z
ROMCS (0:1)#Hi-Z11Hi-Z1
UUCAS#/MRAS3#
ULCAS#/MRAS2#
MRAS (0:1)#Hi-Z111Hi-Z
UCAS#0
LCAS#0
BUSCLK00
0/
Hi-Z
−− − − −
Note 4Note 5Note 6
Note 4Note 5Note 6
After Reset by the
Deadman’s Switch
or RSTSW# Signal
Note 1Note 2
0/
Hi-Z
Note 3Note 3Note 3Note 3
Note 7
Note 7
In the Suspend
Mode
Note 2
Note 2
Note 2
00Hi-Z
00Hi-Z
Note 2
In the Hibernate
Mode or Shut Down
by the HAL Timer
0Hi-Z
0Hi-Z
0Hi-Z
0/
Hi-Z
0Hi-Z
0Hi-Z
0
µµµµ
PD30121
During a Bus
Hold
Hi-Z/
Note 2
Note 8
(1/4)
Notes 1.
Remark
This differs depending on the setting of the SCLK bit in the SDRAMMODEREG register.
When SCLK bit has a value of "1": outputs clock.
When SCLK bit has a value of "0": low level is output.
Maintains the state of the previous Full-speed Mode.
2.
When used as the chip select for the ROM or extended ROM, this is the same as ROMCS (0:1)# pins.
3.
When used as the RAS for the extended DRAM, this is the same as MRAS (0:1)# pins.
When DBUS32 signal = 1, this becomes the high impedance state.
4.
When DBUS32 signal = 0, the high level is output.
When DBUS32 signal = 1: See
5.
Note 7
below.
When DBUS32 signal = 0: high level is output.
When DBUS32 signal = 1: low level is output.
6.
When DBUS32 signal = 0: high level is output.
Reset by the RSTSW# signal: The pin outputs a low level. (Self refresh)
7.
Reset by the Deadman’s switch: The pin outputs a high level.
Bus hold from the Suspend Mode: The state of the previous Full-speed Mode is maintained.
8.
Bus hold from Full-speed Mode or Standby Mode: Outputs clocks.
0: low level, 1: high level, Hi-Z: high impedance
Data Sheet U14691EJ1V0DS00
17
Pin NameAfter Reset by
the RTC Reset
SHB#Hi-Z11Hi-ZHi-Z
IOR#Hi-Z11Hi -ZHi-Z
IOW#Hi-Z11Hi-ZHi-Z
MEMR#Hi-Z11Hi-ZHi-Z
MEMW#Hi-Z11Hi-ZHi-Z
ZWS#
RSTOUTHi-Z10Hi-Z
IOCS16#
MEMCS16#
IOCHRDY
HLDRQ#
HLDACK#Hi-Z1
CKE0
RTCX1
RTCX2
CLKX1
CLKX2
FIRCLK
BATTINH/
BATTINT#
MPOWER01101
POWERON00000
POWER
RSTSW#
RTCRST#
RxD
TxD/CLKSEL2
RTS#/CLKSEL1
CTS#
DCD#/GPIO15
DTR#/CLKSEL0
DSR#
IRDIN
IRDOUT#0000
FIRDIN#/SELHi-ZHi-Z
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
−− − − −
Note 4
Hi-Z
Note 4
Hi-Z
−− − − −
−− − − −
Note 4
Hi-Z
−− − − −
−− − − −
After Reset by the
Deadman’s Switch
or RSTSW# Signal
Note 2Note 3Note 3
111
111
111
In the Suspend
Mode
Note 1
Note 3
In the Hibernate
Mode or Shut Down
by the HAL Timer
Hi-Z
Hi-Z
During a Bus
µµµµ
PD30121
(2/4)
Hold
Note 1
Note 1
Hi-Z
Note 1
Note 1
Note 1
Note 1
Note 3
Notes 1.
Remark
18
Normal operation proceeds.
This differs depending on the setting of the SCLK bit in the SDRAMMODEREG register.
2.
When SCLK bit has a value of "1": outputs clock.
When SCLK bit has a value of "0": low level is output.
Maintains the state of the previous Full-speed Mode.
3.
Specify the input data level using a high-resistance pull up or pull down resistor.
4.
0: low level, 1: high level, Hi-Z: high impedance
Data Sheet U14691EJ1V0DS00
Pin NameAfter Reset by
the RTC Reset
After Reset by the
Deadman’s Switch
or RSTSW# Signal
Note 1
DDIN
DDOUT
DRTS#
DCTS#
KPORT (0:7)
KSCAN (0:11)
GPIO (32:43)
GPIO45
GPIO44
Note 1
GPIO46
Note 1
GPIO47
Note 1
/
/
/
/
Note 1
/
−
Hi-Z
1/
1
1/
1
/
−
Hi-Z
−− − − −
/
Hi-Z/
Hi-Z
AUDIOOUT00
TPX (0:1)11
TPY (0:1)Hi-ZHi-Z
ADIN (0:2)
AUDIOIN
−− − − −
−− − − −
GPIO (0:3)Hi-ZHi-Z
SRAS#/
Hi-Z
GPIO4
SCAS#/
Hi-Z
GPIO5
SYSDIR/
GPIO6
SPOWER/
GPIO7
0/
Hi-Z
0/
Hi-Z
GPIO (8:14)Hi-ZHi-Z
/
−
Note 2
1/
Note 2
1/
Note 2
/
−
Note 2
Hi-Z/
Note 2
Note 5
Hi-Z
Note 5
Hi-Z
0/
Hi-Z
1/
Hi-Z
µµµµ
PD30121
(3/4)
In the Suspend
Mode
/
−
Note 2
1/
Note 2
1/
Note 2
/
−
Note 2
/
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
/
0/
Note 2
/
0/
Note 2
0/
Note 2
1/
Note 2
Note 2
In the Hibernate
Mode or Shut Down
by the HAL Timer
/
−
Note 2
1/
Note 2
1/
Note 2
/
−
Note 2
Hi-Z/
Note 2
0
1
Hi-Z
Note 4
Hi-Z
0/
Hi-Z
0/
Hi-Z
0/
Hi-Z
1/
Hi-Z
Note 4
Hi-Z
During a Bus
Hold
/
−
Note 2
1/
Note 2
1/
Note 2
/
−
Note 2
Note 3
Note 3
Note 3
Note 3
Note 3
Hi-Z/
Note 3
Hi-Z/
Note 3
Hi-Z/
Note 3
1/
Note 3
Note 3
Notes 1.
Remark
Software can switch the function pin and the output port.
The state of the previous Full-speed Mode is maintained.
2.
Normal operation proceeds.
3.
During hibernate mode, the pull-up/pull-down setting is retained.
4.
When reset by RSTSW# signal: low level output (self refresh)
5.
When reset by deadman's switch: high level output
0: low level, 1: high level, Hi-Z: high impedance
Data Sheet U14691EJ1V0DS00
19
Pin NameAfter Reset by
the RTC Reset
IRING
ILCSENSE
OFFHOOK
Note 1
MUTE
AFERST#
Note 1
Note 1
−− − − −
−− − − −
Hi-ZHi-Z
Hi-ZHi-Z
00
After Reset by the
Deadman’s Switch
or RSTSW# Signal
In the Suspend
Mode
Note 2
Note 2
Note 2
In the Hibernate
Mode or Shut Down
by the HAL Timer
Hi-Z
Hi-Z
0
µµµµ
PD30121
During a Bus
Hold
Note 2
Note 2
Note 2
(4/4)
SDI
FS
SDO00
HSPSCLK
HC0
Note 1
Note 1
Note 1
TELCON
HSPMCLK
OPD#00
LEDOUT#1
DBUS32/
Note 4
GPIO48
−− − − −
−− − − −
Note 2
0
−− − − −
Hi-ZHi-Z
00
00
Note 2
Note 2
Note 2
Note 2
Hi-Z
0
0
0
Note 3Note 3Note 3Note 3
Hi-Z/
Hi-Z
Hi-Z/
Note 2
Note 2
Note 2
/
Hi-Z/
Note 2
MIPS16ENHi-ZHi-ZHi-ZHi-ZHi-Z
SMODE1/
GPIO49
SMODE2
Notes 1.
Note 4
When initializing, always set BSC bit to 1 in the HSPINT register (0x0C00 0020).
The state of the previous Full-speed Mode is maintained.
2.
Normal operation proceeds.
3.
After the RTC reset is released, this functions as an output port.
4.
Specify the input data level using a high-resistance pull up or pull down resistor.
5.
Hi-Z/
Hi-Z
Note 5
Hi-Z
Note 2
/
Note 2/
Note 2
Hi-Z
Note 2
/
−− − − −
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2
Note 2/
Note 2
/
Remark
20
0: low level, 1: high level, Hi-Z: high impedance
Data Sheet U14691EJ1V0DS00
µµµµ
PD30121
1.3 Recommended Connection and I/O Circuit Types
Pin NameInternal
Processing
ADD25/SCLKSlew rate buff er
ADD (0:24)Slew rate buffer
DATA (0:15)
DATA (16:31)/
40 pFALeav e open
120 pFALeave open
120 pFALeave open
−
40 pFALeav e open
40 pFALeav e open
120 pFALeave open
120 pFALeave open
40 pFALeav e open
120 pFALeave open
120 pFALeave open
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
−
−
−
−
I/O Circuit
Type
AConnect to GND
AConnect to V
AConnect to V
AConnect to V
AConnect to GND
Recommended
Connection of
Unused Pins
GND via resistor
−
−
−
(1/3)
DD
DD
DD
Notes 1.
2.
3.
4.
5.
Remarks 1.
R
Pins DATA (16:31)/GPIO (16:31) in the V
4121 function as GPIO (16:31) signals when using the 16-bit
data bus. When using these pins as GPIO (16:31) signals, pull them up or pull down so as not to input
an intermediate-level signal.
When the bus hold function is used, external pull-up is recommended for the VR4121.
Do not input an intermediate-level signal.
When used as the RAS signal of extended DRAM, external pull-up is recommended for the VR4121.
When the MPOWER pin outputs the low-level, intermediate-level input is enabled.
No specification (−) in the External Processing column indicates that the external processing is
unnecessary.
No specification (−) in the Recommended Connection of Unused Pins column indicates that the pin
BATTINT#
MPOWER
POWERON
POWERSchmitt input
RSTSW#Schmitt input
RTCRST#Schmit t i nput
RxD
TxD/CLKSEL2
RTS#/CLKSEL1
CTS#
DCD#/GPIO15Schmitt i nputPull up
DTR#/CLKSEL0
DSR#
IRDIN
IRDOUT#
FIRDIN#/SEL
DDIN/GPIO45
DDOUT/GPIO44
DRTS#/GPIO46
DCTS#/GPIO47
Note
−−
−
−
−
−
−
Schmitt input
−−
−−
−−−
−
−
−−−
−
−−−
−
−−
−
−−
−−
−−
−−
External
Processing
Pull up
−
Resonator
Resonator
Resonator
Resonator
Resonator
−−
−−
−−
−−
Pull up/
Pull down
Pull up/
Pull down
Pull up/
Pull down
Pull up
Pull up/
Pull down
µµµµ
PD30121
(2/3)
Drive
Capability
−
40 pFALeav e open
120 pFALeave open
−−−
−−
−−−
−−
−
40 pFALeav e open
40 pFALeav e open
40 pFA
40 pFA
−
40 pFA
−
40 pFALeav e open
40 pFAConnec t to VDD via
40 pFAConnect to VDD or
40 pFALeav e open
40 pFALeav e open
40 pFAConnect to VDD or
I/O Circuit
Type
A
A
B
B
B
B
AConnect to GND
AConnect to V
BConnect t o VDD or
AConnect to V
AConnect t o VDD or
Recommended
Connection of
Unused Pins
Directly connect to V
Leave open
Leave open
Directly connect to V
Directly connect to V
GND
GND
resistor
GND via resistor
GND via resistor
DD
DD
DD
−
−
−
−
−
DD
−
DD
Note
Remarks 1.
22
Intermediate-level input is enabled when the MPOWER pin is set for low-level output.
No specification (−) in the External Processing column indicates that the external processing is
unnecessary.
No specification (−) in the Recommended Connection of Unused Pins column indicates that the pin
Pull up/Pull down40 pFA
Pull up/Pull down40 pFA
Pull up/Pull down
Pull up/Pull down
µµµµ
PD30121
Drive
Capability
40 pFALeav e open
−
120 pF or more
120 pF or more
120 pF or more
40 pFBConnect to VDD or
40 pFB
40 pFB
40 pFBLeav e open
40 pFB
40 pFBConnect to VDD or
−
−
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
−
−
40 pFALeav e open
−
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
40 pFALeav e open
−
−
I/O Circuit
Type
BLeave open
FLeave open
CLeave open
DLeave open
CLeave open
ELeave open
ELeave open
BConnect to GND
AConnect to GND
AConnect to GND
AConnect to GND
AConnect to GND
A
A
Recommended
Connection of
Unused Pin
GND via resistor
Connect to VDD or GND
Connect to VDD or GND
Connect to VDD or GND
GND via resistor
(3/3)
−
−
−
−
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.
If internal pull-up or pull-down resistors are used in GPIO (0:3), SRAS#/GPIO4, SCAS#/GPIO5,
2.
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.
3.
Data Sheet U14691EJ1V0DS00
23
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