ISP1102 데이터 시트보기 (PDF) - NXP Semiconductors.

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ISP1102

Advanced Universal Serial Bus transceiver

NXP Semiconductors. 

NXP Semiconductors

ISP1102

Advanced USB transceiver

Sharing mode — VCC(I/O) is connected only, VCC(5V0) is < 3.6 V and VREG3V3 is < 2.4 V.

In this mode, the DP and DM pins are 3-stated and the ISP1102 allows external signals of

up to 3.6 V to share the DP and DM lines. The internal circuits of the ISP1102 ensure that

virtually no current (maximum 10 µA) is drawn through the DP and DM lines. The power

consumption through pin VCC(I/O) drops to the low-power (suspended) state level.

Pins VBUSDET and RCV are driven to LOW to indicate this mode. The VBUSDET

function is ignored during suspend mode of the ISP1102.

Some hysteresis is built into the detection of VREG3V3 lost.

Table 6. Pin states in sharing mode

Pin

VCC(5V0)

VREG3V3

VCC(I/O)

VPU3V3

DP, DM

VP/VPO, VM/VMO[1]

RCV

VBUSDET

OE, SUSPEND, SOFTCON

Sharing mode

< 3.6 V

< 2.4 V

1.65 V to 3.6 V input

high-Z (off)

high-Z

high-Z

LOW

LOW

high-Z

[1] VP/VPO and VM/VMO are bidirectional pins.

Table 7. Power supply configuration overview

VCC(5V0)

Connected

Configuration

normal mode

Special characteristics

-

< 3.6 V

sharing mode

DP, DM and VPU3V3 high-Z; VBUSDET is driven LOW

ISP1102_5

Product data sheet

Rev. 05 — 11 December 2007

© NXP B.V. 2007. All rights reserved.

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