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參數(shù)資料
| 型號： | EP7309-CV-C |
| 廠商： | CIRRUS LOGIC INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| 中文描述： | 32-BIT, FLASH, 74 MHz, RISC MICROCONTROLLER, PQFP208 |
| 封裝： | LQFP-208 |
| 文件頁數(shù)： | 5/46頁 |
| 文件大?。?/td> | 1893K |
| 代理商： | EP7309-CV-C |
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DS507PP1
Copyright 2001 Cirrus Logic (All Rights Reserved)
5
EP7309
High-Performance, Low-Power System on Chip
Synchronous Serial Interface
ADC (SSI) Interface: Master mode only; SPI and
Microwire1-compatible (128 kbps operation)
Selectable serial clock polarity
LCD Controller
A DMA address generator is provided that fetches video
display data for the LCD controller from memory. The
display frame buffer start address is programmable,
allowing the LCD frame buffer to be in SDRAM, internal
SRAM or external SRAM.
Interfaces directly to a single-scan panel monochrome
STN LCD
Interfaces to a single-scan panel color STN LCD with
minimal external glue logic
Panel width size is programmable from 32 to 1024
pixels in 16-pixel increments
Video frame buffer size programmable up to
128 KB
Bits per pixel of 1, 2, or 4 bits
64-Keypad Interface
Matrix keyboards and keypads can be easily read by the
EP7309. A dedicated 8-bit column driver output
generates strobes for each keyboard column signal. The
pins of Port A, when configured as inputs, can be
selectively OR'ed together to provide a keyboard
interrupt that is capable of waking the system from a
STANDBY or IDLE state.
Column outputs can be individually set high with the
remaining bits left at high-impedance
Column outputs can be driven all-low, all-high, or all-
high-impedance
Keyboard interrupt driven by OR'ing together all Port
A bits
Keyboard interrupt can be used to wake up the
system
8
×
8 keyboard matrix usable with no external logic,
extra keys can be added with minimal glue logic
Interrupt Controller
When unexpected events arise during the execution of a
program (i.e., interrupt or memory fault) an exception is
usually generated. When these exceptions occur at the
same time, a fixed priority system determines the order
in which they are handled. The EP7309 interrupt
controller has two interrupt types: interrupt request
(IRQ) and fast interrupt request (FIQ). The interrupt
controller has the ability to control interrupts from 22
different FIQ and IRQ sources.
Supports 22 interrupts from a variety of sources (such
as UARTs, SSI1, and key matrix.)
Routes interrupt sources to the ARM720T
’
s IRQ or
FIQ (Fast IRQ) inputs
Five dedicated off-chip interrupt lines operate as level
sensitive interrupts
.
Note:
Pins are multiplexed. See
Table R on page 7
for more
information.
Real-Time Clock
The EP7309 contains a 32-bit Real Time Clock (RTC) that
can be written to and read from in the same manner as
the timer counters. It also contains a 32-bit output match
register which can be programmed to generate an
interrupt.
Pin Mnemonic
I/O
Pin Description
ADCLK
O
SSI1 ADC serial clock
ADCIN
I
SSI1 ADC serial input
ADCOUT
O
SSI1 ADC serial output
nADCCS
O
SSI1 ADC chip select
SMPCLK
O
SSI1 ADC sample clock
Table G. Serial Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
CL1
O
LCD line clock
CL2
O
LCD pixel clock out
DD[3:0]
O
LCD serial display data bus
FRM
O
LCD frame synchronization pulse
M
O
LCD AC bias drive
Table H. LCD Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
COL[7:0]
O
Keyboard scanner column drive
Table I. Keypad Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
nEINT[2:1]
I
External interrupt
EINT[3]
I
External interrupt
nEXTFIQ
I
External Fast Interrupt input
nMEDCHG/nBROM
(Note)
I
Media change interrupt input
Table J. Interrupt Controller Pin Assignments
相關PDF資料 |
PDF描述 |
|---|---|
| EP7309-ER-C | HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-EV-C | CONN MOD JACK 8-8 SHIELD TOP TAB |
| EP7309-EB-C | HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-IB-C | HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-IR-C | HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| EP7309-CVZ | 功能描述:音頻片上系統(tǒng) - SoC IC Ultra Low Power Audio Decode SOC RoHS:否 制造商:Cirrus Logic |
| EP7309-EB-C | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-ER-C | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-EV-C | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE |
| EP7309-IB | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:High-performance, Low-power, System-on-chip with Enhanced Digital Audio Interface |
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