HMS30C7202N データシートの表示（PDF） - MagnaChip Semiconductor

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HMS30C7202N

Highly-intergrated MPU

MagnaChip Semiconductor 

HMS30C7202N

when the SDRAM transfer completes, comes from the bridge monitoring the BWAIT ASB signal.

1.6.4 Timing

This is detailed in Chapter 9, Fast AMBA Peripherals.

1.6.5 Sound output

In the HMS30C7202, the sound peripheral is connected to the fast APB bus and supported by the DMA

controller. (Note that this is compatible with some operating systems, which require DMA-support sound

hardware.)

1.7 Peripherals

Universal Serial Bus (USB) device controller

The USB device controller is used to transfer data from/to host system like PC in high-speed (12Mbits/s) mode. No

external USB transceiver is necessary.

PS/2 Interface

The PS/2 port can be used with keyboard, mice or other PS/2 compliant devices. In PS/2 mode the pins are open-drain

I/Os, as GPIOs they have normal characteristics.

Universal Asynchronous Receiver and Transmitter (UART)

Four UART ports are implemented. One of them supports full modem interface signals. Some pins are used as GPIO

or matrix keyboard pins when not used for UART.

IrDA

IrDA uses UART1 for its SIR transfer in 115 Kbit/s speed. The pins are used as GPIO or matrix keyboard pins when not

used for IrDA.

Multimedia Card (MMC), Solid State Floppy Disk Card (SSFDC)

MMC or SSFDC memory card can be used as storage device. The pins are used as GPIO when not used for MMC or

SSFDC.

Pulse-Width-Modulated (PWM) Interface

Two PWM output signals are generated. The pins are used as GPIO when not used for PWM.

Matrix Keyboard Interface

Matrix keyboard interface supports up to 64 keys. The pins are used as GPIO when not used for matrix keyboards.

General Purpose DMA Channel

One DMA channel is provided for external device that needs DMA access. The pins are used as GPIO when not used

for DMA.

DAC

On chip DAC provides 8-bit audio stereo sound.

ADC

A 5 channel ADC is implemented for touch panel, audio input and monitoring of two voltages. No external transistor

switch is necessary for touch panel operation.

PLL

CPU, video and USB clocks are generated by three PLL with 3.6864 MHz input clock.

1.8 Power management

The HMS30C7202 incorporates advanced power management functions, allowing the whole device to be put

into a standby mode, when only the real time clock runs. The SDRAM is put into low-power self-refresh mode

to preserve its contents. The HMS30C7202 may be forced out of this state by either a real-time clock wake-up

interrupt, a user wake-up event (which would generally be a user pressing the “on” key) or by the UART ring-

indicate input. The power management unit (PMU) controls the safe exit from standby mode to operational

mode, ensuring that SDRAM contents are preserved. In addition, halt and slow modes allow the processor to

be halted or run at reduced speed to reduce power consumption. The processor can be quickly brought out of

the halted state by a peripheral interrupt. The advanced power management unit controls all this functionality.

In addition, individual devices and peripherals may be powered down when they are not in use. The

HMS30C7202 is designed for battery-powered portable applications and incorporates innovative design

features in the bus structure and the PMU to reduce power consumption. The slow APB bus allows

© 2004 MagnaChip Semiconductor Ltd. All Ri1g1hts Reserved.

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