参数资料
| 型号： | MIC2555-1BML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 6/29页 |
| 文件大小： | 0K |
| 描述： | IC TXRX UTG USB BUS UNIV 24MLF |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/0 |
| 规程： | USB 2.0 |
| 电源电压： | 3 V ~ 4.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘，24-MLF? |
| 供应商设备封装： | 24-MLF?（4x4） |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2555-1BMLTR |
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Micrel, Inc.
MIC2555
December 2006
14
M9999-121406
plug can produce multiple rail-to-rail transitions. These
will trigger both comparators and produce a conflicting
result: ID = GND and ID = Float. The Interrupt source
register contains the debounced steady state value of
ID.
After the nature of the newly connected device has been
determined, activating a current source in series with the
internal
ID
pull-up
resistor
can
reduce
power
consumption
caused
by
ID
sensing.
This
is
accomplished by clearing rcs_dis in Control Register 3.
When the connected device is removed, and the ID pin
is pulled HIGH by the current source (ID=GND is no
longer true), MIC2555 automatically resets rcs_dis,
disabling the current source.
ID
0.85x
ID Low
100 k
VBAT
Closes to
Open = Reduced
4 A
0.15x
ID High
1 k
VBAT
signal
Peripheral
ID sensing current
ID Pin – Operational Diagram
VTRM
VBAT powers VTRM, which supplies 3.3V power to the
differential USB transmitter and the UART drivers and
receivers. As VBAT drops below 3.4V, VTRM is no
longer able to regulate and follows VBAT at about 0.1V
less than VBAT. When this occurs, output drive levels for
USB and UART are reduced accordingly.
Interrupt Detector
When in Audio mode, the MIC2555 does not participate
in the audio transmissions, but monitors the D+ line for
interrupt pulses. If the Serial Controller is configured to
flag interrupt pulses, the system controller can exchange
both audio signals and digital information with the target
device.
MIC2555 is designed to detect two different interrupt
pulses, those exceeding 3.0V and those crossing the
0.5V level. Under normal circumstances, the audio
signal seen on D+ is transposed on a DC level and
limited to voltage excursions between the 0.5V and 3.0V
levels, so only interrupt pulses should cross these
thresholds. Signaling is typically done with only one
polarity pulse so MIC2555 is designed to monitor only
one threshold at a time. Threshold selection is done with
the cr_int_sel bit, and the interrupt (cr_int) can be set to
trigger on pulses of either polarity.
UART Mux
System controllers with UART communication ability
may or may not be able to route their UART signals
through the VP, VM or DAT, SE0 pins. For those with
independent UART connectivity, MIC2555 provides a
secondary UART I/O port. The MUX, under direction of
the Serial Controller, selects which UART I/O is used by
the OTG controller.
Condition:
uart_io = 0
SEO_VM_TX = transmit
DAT_VP_RX = receive
uart_io = 1
GPIO_1_TX = transmit
GPIO_0_RX = receive
Differential Driver / Differential Receiver
Operation of the Differential Driver and Differential
Receiver is described in the tables below and on the
following page. The register bits used in the column
headings are described in the Serial Controller section of
this data sheet.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2555-1YML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: |
| MIC2555-1YML TR | 功能描述:USB 接口集成电路 USB Transceiver - Lead Free RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| MIC2555-1YML-TR | 功能描述:1/1 Transceiver Half USB 2.0 24-MLF? (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:有效 类型:收发器 协议:USB 2.0 驱动器/接收器数:1/1 双工:半 接收器滞后:200mV 数据速率:400kbps 电压 - 电源:3 V ~ 4.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘，24-MLF? 供应商器件封装:24-MLF?（4x4） 标准包装:1 |
| MIC2557BM | 制造商:Micrel Inc 功能描述: 制造商:Micron Technology Inc 功能描述: 制造商:Micrel Inc 功能描述:IC PCMCIA SOCKET SWITCHING MATRIX, SOIC8, IC Interface Type:-, Interface Applica |
| MIC2558BM | 制造商:Micrel Inc 功能描述:PCMCIA Card Socket 14-Pin SOIC 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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