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参数资料
| 型号： | MAX3420EECJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/22页 |
| 文件大小： | 0K |
| 描述： | IC USB PERIPH CONTROLLER 32TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 250 |
| 控制器类型： | USB 外设控制器 |
| 接口： | USB/串行 |
| 电源电压： | 3 V ~ 3.6 V |
| 电流 - 电源： | 15mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 管件 |
| 产品目录页面： | 1407 (CN2011-ZH PDF) |
| 配用： | MAX3420EEVKIT-2+-ND - EVAL KIT FOR MAX3420E |
USB Peripheral Controller
with SPI Interface
Typical Operating Characteristics
(VCC = +3.3V, VL = +3.3V, TA = +25°C.)
Detailed Description
The MAX3420E contains the digital logic and analog
circuitry necessary to implement a full-speed USB
peripheral that complies with the USB specification rev
2.0. ESD protection of ±15kV is provided on D+, D-,
and VBCOMP. The MAX3420E features an internal USB
transceiver and an internal 1.5k
Ω resistor that connects
between D+ and VCC under the control of a register bit
(CONNECT). This allows a USB peripheral to control
the logical connection to the USB host. Any SPI master
can communicate with the MAX3420E through the SPI
slave interface that operates in SPI mode (0,0) or (1,1).
An SPI master accesses the MAX3420E by reading and
writing to internal registers. A typical data transfer con-
sists of writing a first byte that sets a register address
and direction with additional bytes reading or writing
data to the register or internal FIFO.
The MAX3420E contains 384 bytes of endpoint buffer
memory, implementing the following endpoints:
EP0: 64-byte bidirectional CONTROL endpoint
EP1: 2 x 64-byte double-buffered BULK/INT
OUT endpoint
EP2: 2 x 64-byte double-buffered BULK/INT IN
endpoint
EP3: 64-byte BULK/INT IN endpoint
The choice to use EP1, EP2, EP3 as BULK or INTER-
RUPT endpoints is strictly a function of the endpoint
descriptors that the SPI master returns to the USB host
during enumeration.
The MAX3420E register set and SPI interface is optimized
to reduce SPI traffic. An interrupt output pin, INT, notifies
the SPI master when USB service is required: when a
packet arrives, a packet is sent, or the host suspends or
resumes bus activity. Double-buffered endpoints help
sustain bandwidth by allowing data to move concurrently
over USB and the SPI interface.
VCC
Power the USB transceiver by applying a positive 3.3V
supply to VCC. Bypass VCC to GND with a 1.0F
ceramic capacitor as close to the VCC pin as possible.
VL
The MAX3420E digital core is powered though the VL
pin. VL also acts as a reference level for the SPI inter-
face and all other inputs and outputs. Connect VL to the
system’s logic-level power supply. Internal level transla-
tors and VL allow the SPI interface and all general-pur-
pose inputs and outputs to operate at a system voltage
between 1.71V and 3.6V.
VBCOMP
The MAX3420E features a USB VBUS detector input,
VBCOMP. The VBCOMP pin can withstand input volt-
ages up to 6V. Bypass VBCOMP to GND with a 1.0F
ceramic capacitor. According to USB specification rev
2.0, a self-powered USB device must not power the
1.5k
Ω pullup resistor on D+ if the USB host turns off
VBUS. VBCOMP is internally connected to a voltage
comparator so that the SPI master can detect the loss
of VBUS (through an interrupt (INT) or checking a bit
EYE DIAGRAM
MAX3420E
toc01
4
1
0
-1
0
1020304050607080
2
3
TIME (ns)
D+
AND
D-
(V)
MAX3420E
12
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3420EECJ/V+ | 功能描述:外围驱动器与原件 - PCI USB Peripheral Controller with SPI Interface RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX3420EECJ/V+T | 功能描述:外围驱动器与原件 - PCI USB Peripheral Controller with SPI Interface RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX3420EECJ+ | 功能描述:外围驱动器与原件 - PCI USB Peripheral Controller w/SPI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX3420EECJ+T | 功能描述:外围驱动器与原件 - PCI USB Peripheral Controller w/SPI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX3420EECJ-T | 功能描述:外围驱动器与原件 - PCI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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