ISP1107 datasheet(3/19 Pages) PHILIPS

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Philips Semiconductors

ISP1107

Advanced USB transceiver

Objective speciﬁcation

Rev. 01 — 23 February 2000

3 of 19

9397 750 06899

Pinning information

6.1 Pinning

6.2 Pin description

Fig 2.

Pinning diagram BCC16

(to be added).

Fig 3.

Pinning diagram TSSOP16.

fpage

ISP1107DH

MGS961

Vpu(3.3)

SOFTCON

RCV

SUSPND

GND

VCC(I/O)

SPEED

−

FSE0

Vreg(3.3)

VCC(5.0)

Table 2:

Pin description

Symbol

Type

Description

Vpu(3.3)

pull-up supply voltage (3.3 V

± 10%); used to connect an

external 1.5 k

Ω resistor on D+ (full-speed) or D− (low-speed);

pin function is controlled by input SOFTCON:

SOFTCON = LOW — Vpu(3.3) ﬂoating (high impedance)

SOFTCON = HIGH — Vpu(3.3) = 3.3 V

SOFTCON

software controlled USB connection input; a HIGH level

applies 3.3 V to pin Vpu(3.3), which is connected to an external

1.5 k

Ω pull-up resistor; this allows USB connect/disconnect

signalling to be controlled by software

output enable input (CMOS level re. VCC(I/O), active LOW);

enables the transceiver to transmit data on the USB bus

RCV

differential data receiver output (CMOS level re. VCC(I/O));

driven LOW when input SUSPND is HIGH; the output state of

RCV is preserved and stable during an SE0 condition

single-ended D

+ receiver output (CMOS level re. VCC(I/O));

used for external detection of single-ended zero (SE0), error

conditions, speed of connected device; driven HIGH when

VCC(5.0)/Vreg(3.3) are not connected to any voltage supply

single-ended D

− receiver output (CMOS level re. VCC(I/O));

used for external detection of single-ended zero (SE0), error

conditions, speed of connected device; driven HIGH when no

supply voltage is connected to VCC(5.0) or Vreg(3.3)

SUSPND

suspend input (CMOS level re. VCC(I/O)); a HIGH level enables

low-power state while the USB bus is inactive and drives

output RCV to a LOW level

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