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參數(shù)資料
| 型號(hào)： | HMS30C7202N |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Highly-intergrated MPU |
| 中文描述： | 高intergrated微處理器 |
| 文件頁(yè)數(shù)： | 16/179頁(yè) |
| 文件大?。?/td> | 2127K |
| 代理商： | HMS30C7202N |
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HMS30C7202N
2004 MagnaChip Semiconductor Ltd. All Rights Reserved. Version 1.1
- 11 -
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
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