參數(shù)資料
型號： MIC2555-1BML TR
廠商： Micrel Inc
文件頁數(shù)： 23/29頁
文件大小： 0K
描述： IC TXRX UTG USB BUS UNIV 24MLF
標(biāo)準(zhǔn)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
Micrel, Inc.
MIC2555
December 2006
3
M9999-121406
Pin Description
Pin Number
Type
Pin Name
Pin Description
1
O
RCV
Output from differential receiver.
2
I/O
SE0_VM_TX
= SE0 in USB DAT-SE0 mode
= VM in VP-VM mode.
= UART Transmit output when in UART Mode
See figures 1 and 2 on page 4
3
I/O
DAT_VP_RX
= DAT in USB DAT-SE0 mode.
= VP in VP-VM mode
= UART Receive input when in UART mode
See figures 1 and 2 on page 4
4
I/O
OE_INT/
A Multi-mode pin controlling various functions in conjunction with
control register bits. A logic LOW on this pin gives the following
results:
= OE (Output Enable): Enables D+, D- as USB outputs.
= INT/ (Interrupt): Active LOW output when register bits ‘suspend’ and
‘oe_int_en’ both = 1.
5
O
INT/
Interrupt (bar). Open Drain Active LOW output. May be wire-ORed
with other interrupt signals.
6
I/O
GPIO_0_RX
= General purpose I/O. Open drain output.
= Alternate UART Receive input.
See figures 1 and 2 on page 4
7
I/O
GPIO_1_TX
= General purpose I/O. Open drain output.
= Alternate UART Transmit output.
See figures 1 and 2 on page 4
8
I/O
SCL
I
2C Clock
9
I/O
SDA
I
2C Data
10
I
ADR_0
Sets Address bit A0 of I
2C controller. This pin is a digital input and
must not be left floating.
11
I
RESET/
System reset. Active LOW.
12
I/O
GPIO_2
General purpose I/O. Open drain output.
13
I/O
GND_D
System Digital ground.
14
I/O
ID
Identification input. Monitors the ID pin of the USB connector and
indicates both the presence of a device and type (USB or not USB).
15
I/O
D+
= USB D+ when in USB mode.
= UART Receive in UART mode.
= Right Speaker audio output in stereo mode.
= Microphone signal from Car Kit.
16
I/O
D-
= USB D- when in USB mode.
= UART Transmit out in UART mode.
= Left Speaker audio output in stereo mode.
= Monaural audio output to Car Kit.
17
I/O
VBUS
USB 5V power.
18
I/O
VTRM
Internal 3.3V supply. Sets USB signal levels.
19
I
CAP++
Positive lead for charge pump reservoir capacitor.
20
I
CAP+
Positive lead for charge pump capacitor.
21
I
VBAT
Positive voltage from battery. Supplies power to MIC2555 internal
circuitry and power for charge pump when driving VBUS.
22
I
CAP-
Negative lead for charge pump capacitor.
23
I
GND_A
Analog ground. Isolated Charge Pump ground.
24
I
VDD_LGC
Logic supply voltage. Used to set logic levels between MIC2555 and
System Controller / ASIC.
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