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參數(shù)資料
| 型號： | MAX3421EEHJ+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 7/28頁 |
| 文件大小： | 0K |
| 描述： | IC USB PERIPH/HOST CNTRL 32TQFP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 360 |
| 控制器類型： | USB 外設(shè)控制器 |
| 接口： | USB/串行 |
| 電源電壓： | 3 V ~ 3.6 V |
| 電流 - 電源： | 15mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-TQFP |
| 供應商設(shè)備封裝： | 32-TQFP（5x5） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1407 (CN2011-ZH PDF) |
| 配用： | MAX3421EVKIT-1+-ND - EVAL KIT FOR MAX3421E |
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MAX3421E
USB Peripheral/Host Controller
with SPI Interface
15
Maxim Integrated
Typical Operating Characteristics
(VCC = +3.3V, VL = +3.3V, TA = +25°C.)
Detailed Description
The MAX3421E contains digital logic and analog cir-
cuitry necessary to implement a full-speed USB periph-
eral or a full-/low-speed host compliant to USB
specification rev 2.0. The MAX3421E is selected to
operate as either a host or peripheral by writing to the
HOST bit in the MODE (R27) register. The MAX3421E
features an internal USB transceiver with ±15kV ESD
protection on D+, D-, and VBCOMP. A switchable
1.5k
Ω pullup resistor is provided on D+ and switchable
15k
Ω pulldown resistors are provided on both D+ and
D-. Any SPI master can communicate with the
MAX3421E through the SPI slave interface that oper-
ates in SPI mode (0,0) or (1,1). An SPI master accesses
the MAX3421E by reading and writing to internal regis-
ters. A typical data transfer consists 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.
In peripheral mode, the MAX3421E 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.
In host mode, the MAX3421E contains 256 bytes of
send and receive FIFO memory:
SNDFIFO: Send FIFO—double-buffered 64-byte
FIFO
RCVFIFO: Receive FIFO—double-buffered 64-byte
FIFO
The host FIFOs can send SETUP, BULK, INTERRUPT,
and ISOCHRONOUS requests to a peripheral device, at
full speed or low speed. The MAX3421E accommodates
low-speed devices whether they are directly connected,
or connected through a USB hub. Because the
MAX3421E does much of the host housekeeping, it is
easy to program. The SPI master does a typical host
operation by setting the device address and endpoint,
launching a packet, and waiting for a completion inter-
rupt. Then it examines transfer result bits to determine
how the peripheral responded. It automatically gener-
ates frame markers (full-speed SOF packets or low-
speed keep-alive pulses), and ensures that packets are
dispatched at the correct times relative to these markers.
The MAX3421E 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; for exam-
ple, when a packet arrives, a packet is sent, or the host
suspends or resumes bus activity. Double-buffered FIFOs
EYE DIAGRAM
MAX3421E
toc01
4
1
0
-1
0
1020304050607080
2
3
TIME (ns)
D+
AND
D-
(V)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3421EEHJ+ | 功能描述:外圍驅(qū)動器與原件 - PCI USB Peripheral Controller w/SPI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX3421EEHJ+T | 功能描述:外圍驅(qū)動器與原件 - PCI USB Peripheral Controller w/SPI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX3421EEHJ+TG2C | 制造商:Maxim Integrated Products 功能描述:USB PERIPHERAL/HOST CONTROLLER WITH SPI INTERFACE SPECIAL TA - Tape and Reel 制造商:Maxim Integrated Products 功能描述:USB PERIPHERAL/HOST CONTROLLER WITH SPI INTERFACE - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC USB PERIPH/HOST CNTRL TQFP 制造商:Maxim Integrated Products 功能描述:Peripheral Drivers & Components - PCIs USB Peripheral/Host Cntlr w/ SPI IF |
| MAX3421EETJ+ | 功能描述:外圍驅(qū)動器與原件 - PCI USB Peripheral Controller w/SPI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| MAX3421EETJ+T | 功能描述:外圍驅(qū)動器與原件 - PCI USB Peripheral Controller w/SPI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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