Data Sheet #: TM026

Page 4 of 8

Rev: P03

Date: 4/25/06

Connector S1

Table 5

PIN

SYMBOL

I/O

DESCRIPTION

1,3,5,7,

A[0:6]

I

Address bus for microprocessor interface, A[0} is SDI in serial interface mode

9,11,13

2

CSB

I

Chip Select (Active Low)

4

WRB

I

Write (Active Low)

6

RDB

I

Read (Active Low)

8

ALE

I

Address latch enable. This pin acts as SCLK in serial mode.

10

RDY

O

Ready/Data acknowledge

14

PORB

I

Power on Reset (Active Low)

17,19,21

23,25,27

AD[0:7]

Address/Data multiplexed address/data depending on microprocessor mode

29,31

selection. AD[0] is SDO in serial mode

16

MSTSLVB

I

Master/Slave select. Sets initial power up state

18

INTRPT

O

Active high software interrupt

20

SRCSW

I

Source switching. Force fast source switching.

22

SONSDHB

I

SONET/SDH frequency select. Sets initial power up state

35, 37, 39

UPSEL[0:2]

I

Configures the input for a particular microprocessor type.

41

TRST

I

Tri-State input

43

TCK

I

JTAG TCK input

45

TDO

O

JTAG TDO output

47

TDI

I

JTAG TDI input

49

TMS

I

JTAG TMS output

53, 54,

Vcc

3.3V Input

55, 56

61, 62,

GND

Ground

63, 64

12, 15, 24,

26, 28, 30,

32, 33, 34,

36, 38, 40,

NC

No Connect

42, 44, 46,

48, 50, 51,

52, 57, 58,

59, 60