IP175G datasheet(9/69 Pages) ETC2

9 / 69 page

IP175G/GI/GH/GHI

Data Sheet

9 / 69

November 27, 2012

IP175Gx-DS-R01.3

Pin description

Table 1 Pin description

Type

Description

Type

Description

Input pin

IPL

Input pin with internal pull low 100K ohm

Output pin

IPH

Input pin with internal pull high 200K ohm

Power or Ground

3.1 Analog pins

Pin No.

Label

Type

Description

LDO Regulator

VREG_LDO

LDO regulator output

It is an output power pin for 1.1V power source.

PVDD_LDO

LDO regulator input

It is an input power pin for reference voltage.

IP176G includes a LDO regulator to convert 3.3V to 1.1V.

3.2 MDI (Media Dependent Interface)

Pin No.

Label

Type

Description

Transceiver

44, 45,

3, 4,

8, 9,

14, 15,

22, 21

RXIP0, RXIM0,

RXIP1, RXIM1,

RXIP2, RXIM2,

RXIP3, RXIM3,

RXIP4, RXIM4

TP receive

46, 47,

2, 1,

10, 11,

16, 17,

20, 19

TXOP0, TXOM0,

TXOP1, TXOM1,

TXOP2, TXOM2,

TXOP3, TXOM3,

TXOP4, TXOM4

TP transmit

FXSD4

GND

Fiber signal detection of port 4 (IP175GH)

Port 4 can be configured to be either a TP port or a Fiber port

with this pin. Connect this pin to GND for TP mode, and do not

left this pin floating. Please refer to the paragraph “I/O Electrical

Characteristics” for more detail information.

It is GND pin (IP175G.)

BGRES

Band gap resistor.

It is connected GND through a precision resistor (R=6.19K, 1%)

for band gap reference. Please refer to application circuit for

more information.

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