5238-DS03-405-R datasheet(15/76 Pages) BOARDCOM

15 / 76 page

Advance Data Sheet

BCM5238

1/31/03

Broa d c om Co rp o r a t i o n

Document

5238-DS03-405-R

Hardware Signal Definition Table

Page 7

Sec t io n 2 : H a rdwa re Si gn al Defi ni ti on Ta ble

Note

I = Digital input, O = Digital output, I/O = Bidirectional, IA = Analog input, OA = Analog output, IPU = Digital

input with internal pull-up, IPD = Digital input with internal pull-down, OOD = Open-drain output, O3S =

Three-state output, I/OPD = Bidirectional with internal pull-down, I/OPU = Bidirectional with internal pull-

up, B = Bias Voltage

Table 2: Pin Definitions

BCM5238B

BCM5238U

Pin Label

I/O

Description

Media Connections

A12,B12

A11,B11

A08,B08

A07,B07

T06,R06

T07,R07

T10,R10

T11,R11

4, 3

6, 7

13, 12

16, 17

23, 22

26, 27

33, 32

35, 36

RD+{1}, RD-{1}

RD+{2}, RD-{2}

RD+{3}, RD-{3}

RD+{4}, RD-{4}

RD+{5}, RD-{5}

RD+{6}, RD-{6}

RD+{7}, RD-{7}

RD+{8}, RD-{8}

Receive Pair. Differential data from the media is received

on the RD

± signal pair.

A13,B13

A10,B10

A09,B09

A06,B06

T05,R05

T08,R08

T09,R09

T12,R12

1, 2

9, 8

10,11

19, 18

20, 21

29, 28

30, 31

38, 37

TD+{1}, TD-{1}

TD+{2}, TD-{2}

TD+{3}, TD-{3}

TD+{4}, TD-{4}

TD+{5}, TD-{5}

TD+{6}, TD-{6}

TD+{7}, TD-{7}

TD+{8}, TD-{8}

Transmit Pair. Differential data is transmitted to the media

on the TD

± signal pair.

E16

F16

G16

H16

J16

K16

L16

M16

TXD0{1}

TXD0{2}

TXD0{3}

TXD0{4}

TXD0{5}

TXD0{6}

TXD0{7}

TXD0{8}

IPD

Transmit Data Input. Serial transmit data from MAC to

PHY

D15

E15

F13

G14

H13

J14

K13

L14

100

RXD0{1}

RXD0{2}

RXD0{3}

RXD0{4}

RXD0{5}

RXD0{6}

RXD0{7}

RXD0{8}

O3S

Receive Data Outputs. Serial Receive data from PHY to

MAC

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