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參數(shù)資料
| 型號： | SP5301CY-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX SERIAL BUS UNIV 14TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 1/1 |
| 規(guī)程： | USB 1.1 |
| 電源電壓： | 3.3V，5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-TSSOP |
| 包裝： | 帶卷 (TR) |
6
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP530_00_0870
The SP530 incorporates a receive error
circuit. This error circuit outputs CMOS
signals on the receive error pin (RERR)
and the receive single ended zero pin
(RSE0) under specific conditions from the
USB bus. When OE is asserted LOW, it
enables the USB driver to transmit data
on the D+ and D- output pins. The receive
error circuit is disabled in this condition
and both RERR and RSE0 are forced
low. The receive error circuit is activated
in receive mode when OE is HIGH. The
receive error circuit will signal an error
state when both D+ and D- are HIGH by
forcing RERR HIGH. The receiver error
circuit will signal a single ended zero
when both D+ and D- are LOW by forc-
ing RSE0 HIGH. A single ended zero is
a valid state and is used to signal an end
of packet (EOP) in signal transmission.
(CAUTION: Since both RERR and RSE0
are CMOS outputs, care must be taken
to ensure that RERR and RSE0 are NOT
connected to VCC or GND.)
The SP530 has a suspend input pin
(SUSPND) which enables a low power
state while the USB bus is inactive. When
SUSPND is asserted HIGH or SP530
is in transmit mode (OE is LOW), the
receive data pin (RCV) will be forced
LOW.
The SP530 can transmit and receive
serial data at both full speed, 2Mbps,
and at low speed, .5Mbps, data rates. At
full speed, the active supply current of the
SP530 is 6mA. In the suspend state, the
supply current is typically 20nA.
Full speed USB applications include
ISDN, PBX, POTS, sampled analog
devices, audio, printers, and telephony
designs. Low speed USB applications
include locator devices, keyboards,
mouse, tablets, light pens, stylus, game
peripherals, virtual reality peripherals, and
monitor configurations. The USB protocol
provides full support for the real-time data
for voice, audio, and compressed video.
The SP5301 is specifically geared
towards low-cost USB solutions for the
PC peripheral markets
Waveforms and 2 below show device
behavior in transmit mode, at both low
and full speed, with the D+/D- pins driving
the load specified in figure 9.
Waveform 2. D+/D- Transmit Mode, full speed
Waveform . D+/D- Transmit Mode, low speed
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