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參數(shù)資料
| 型號： | MIC2555-1BML TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 3/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX UTG USB BUS UNIV 24MLF |
| 標準包裝： | 1,000 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 1/0 |
| 規(guī)程： | USB 2.0 |
| 電源電壓： | 3 V ~ 4.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，24-MLF? |
| 供應(yīng)商設(shè)備封裝： | 24-MLF?（4x4） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC2555-1BMLTR |
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Micrel, Inc.
MIC2555
December 2006
11
M9999-121406
UART mode
There are two UART modes of operation:
Direct UART:
-
UART TX
SE0_VM_TX pin, data is output on D-
-
UART RX
DAT_VP_RX pin receives UART data from
D+.
Secondary UART:
-
UART TX
GPIO_1_TX pin, data is output on D-
-
UART RX
GPOI_0_RX pin, received from D+.
Conditions for UART mode:
uart_en = 1
speed = 1
uart_io = Direct UART = 0
Secondary UART inputs (GPIO) = 1
Note:
It is not necessary to reset uart_io when switching from
UART to USB mode; uart_io is deactivated when
uart_en = 0, so its setting will not effect DAT_VP_RX or
SE0_VM_TX’s operation in USB mode.
Audio Mode
There is one mode of Audio operation. In audio mode,
the MIC2555’s D+ and D- outputs are Tri-Stated (high
impedance) and the OTG controller or system
components can send and receive audio signals via the
D+, D- lines. The MIC2555 will monitor the D+ line for
voltages crossing one of two levels, as a means of
detecting a car kit interrupt signal. These interrupt events
are captured and flagged by the Serial Controller.
Conditions:
uart_en = 0
OE_INT/ = 1
cr_int_sel = detect @ 3.0V = 1
detect @ 0.5V = 0
Note:
The MIC2555 has no provision to connect or disconnect
audio devices from the D+, D- lines, so the designer is
cautioned to be sure that when the MIC2555 is operating
as a data transceiver, no damage will ensue if the
system’s audio components are exposed to USB or
UART digital signal levels.
Power Management
The transceiver’s power modes are:
Active power
:
All functions active, transceiver fully powered.
Conditions:
suspend = 0
pwr_dn = 0
Suspend power
:
The differential transmitter and receiver are turned off to
conserve power but the USB interface is still active (i.e.,
pull-ups and pull-downs still active, VBUS generation on,
etc.).
Conditions:
suspend = 1
pwr_dn = 0
Power Down:
Only the serial interface is still active and the transceiver
is able to detect SRP. The ID pin sensing may be turned
on or off with a control bit in the control registers.
Conditions:
suspend = 1
pwr_dn = 1
Control Bit
Functions Powered Down
By Control Bit
suspend
pwr_dn
cp_off
Differential Driver
●
Differential Receiver
●
UART TXD
●
D+ interrupt comparators
●
VBUS Comparators
●
VTRM LDO
●
VBUS output
●
Internal biasing circuits and
band gap reference
●
Charge Pump off
●
Power Management Table
Note:
Suspend
and
Power-Down
bits
operate
independently of each other. Activating Power-Down
does not automatically invoke Suspend.
For lowest power operation Suspend, Power-Down and
Charge Pump OFF modes must be activated:
Conditions:
suspend = 1
pwr_dn = 1
cp_off = 1
Circuits still operating:
ID detect and D- receiver continue to function.
This includes the ID comparators, ID pull-up
circuits, and D- data receiver.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 接口集成電路 USB Transceiver - Lead Free RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體: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:- 包裝:剪切帶（CT） 零件狀態(tài):有效 類型:收發(fā)器 協(xié)議:USB 2.0 驅(qū)動器/接收器數(shù):1/1 雙工:半 接收器滯后:200mV 數(shù)據(jù)速率:400kbps 電壓 - 電源:3 V ~ 4.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤，24-MLF? 供應(yīng)商器件封裝:24-MLF?（4x4） 標準包裝: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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