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参数资料
| 型号： | MAX14502AETL+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/41页 |
| 文件大小： | 0K |
| 描述： | IC CARD READER USB-SD 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 应用： | USB |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.8 V ~ 3.3 V |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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MAX14500–MAX14503
Hi-Speed USB-to-SD Card
Readers with Bypass
20
______________________________________________________________________________________
Default Power-Up (Pass Thru Mode)
In the default Pass Thru mode, the MAX14500–
MAX14503 are transparent and the existing host func-
tions (access to SD cards and USB) are preserved
(Figure 7). The host P reads and writes data to the SD
card from the SD port, and can communicate to a PC
through its existing full-speed USB port. All of the fea-
tures of the original chipset are intact. The MAX14500–
MAX14503 sleep when in Pass Thru mode (WAKEUP =
0), when the MODE input is low, or when the MODE bits
[2:1] in control register (0x00) are set to Card Reader
mode, not active. In Sleep mode, the internal microcon-
troller is turned off and current consumption is mini-
mized. The settings for SD port switches for card 1 and
card 2 are controlled by SD port switch bits [4:3] in the
control register.
Card Reader Mode
In Card Reader mode, the PC communicates with the
SD card through USB with an internal Hi-Speed SD
card reader, bypassing the host P. Figure 8 shows
card reader mode with SD card 1 connected to the PC
with the internal card reader. The 40-pin TQFN can
connect to a single SD card in Card Reader mode. With
the 56-bump WLP operating under I2C control, either
SD card can be selected for Card Reader mode.
CCLK2
CCMD2
CDAT2_[3:0]
HCLK2
HCMD2
HDAT2_[3:0]
4
SD
PORT2
SD
SLOT2
CD+
SD PORT 2 SWITCHES
HOST PROCESSOR
USB SWITCHES
CD-
D+
D-
HD+
HD-
USB
CONNECTOR
SD CARD INTERFACE
USB HS
CARD READER
CCRD_PRST
SD PORT 1 SWITCHES
CCLK1
CCMD1
HCRD_PRST
HCLK1
HCMD1
4
CDAT1_[3:0]
HDAT1_[3:0]
SD
PORT1
I/O
LEVEL
TRANSLATORS
HOST
I/O
SD
SLOT1
USB
TRANSCEIVER
MAX14500–
MAX14503
Figure 7. Default Startup (Pass Thru Mode)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX14502AETL+ | 功能描述:接口 - 专用 High speed USB to FS-USB RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX14502AETL+T | 功能描述:接口 - 专用 High speed USB to FS-USB RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX14502EVKIT+ | 功能描述:界面开发工具 MAX14502 Eval Kit RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX14503AEWN+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX14503ETL+ | 制造商:Maxim Integrated Products 功能描述: |
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