TNETA1585

ATM TRAFFIC MANAGEMENT SCHEDULER DEVICE

WITH RECEIVE UTOPIA AND COPROCESSOR INTERFACES

SDNS041A – NOVEMBER 1996 – REVISED JULY 1998

6

POST OFFICE BOX 655303

Terminal Functions (Continued)

boundary-scan interface

TERMINAL

RESET

NAME

NO.

PGF

NO.

PCM

I/O

RESET

STATE

DESCRIPTION

TCK

4

4

I (TTL)

I

Test clock. TCK is used to clock the test-access-port (TAP) operation.

TDI

1

1

I (TTL)

I

Test data input. TDI is used to shift serial test data and instruction into the device

during TAP operation.

TDO

2

2

O

(CMOS)

Hi-Z

Test data output. TDO is used to shift serial test data and instructions out of the

device during TAP operation.

TMS

3

3

I (TTL)

I

Test mode select. TMS is used to control the state of the TAP controller.

TRST

6

6

I (TTL)

I

Test reset. TRST asynchronously forces the TAP controller to a known state.

miscellaneous signals

TERMINAL

RESET

NAME

NO.

PGF

NO.

PCM

I/O

RESET

STATE

DESCRIPTION

CONFIG

9

9

I (TTL)

I

This terminal must be tied low during normal operation.

TESTMODE

7

7

I (TTL)

I

Test/normal mode. TESTMODE selects test mode when high and normal

operation when low.

power and ground

TERMINAL

NAME

NO.

PGF

NO.

PCM

DESCRIPTION

GND

5, 15, 27, 40,

50, 58, 67, 77,

84, 94, 103,

112, 122, 130,

138, 147, 156,

166, 174

5, 14, 25, 36,

46, 53, 61, 69,

76, 86, 94,

102, 110, 118,

126, 134, 142,

150, 158

Ground. GND is the 0-V reference for the device.

NC

13, 17, 28, 30,

32, 57, 61, 72,

76, 101, 105,

116, 120, 145,

149, 160, 164,

173, 175, 176

27, 157, 159,

160

No internal connection. NC terminals have no internal connections. For potential

functionality additions, it is recommended that these terminals not be connected to any

signal, power, or ground connection.

VCC

11, 37, 46, 63,

71, 90, 98,

117, 126, 142,

152, 161, 170

11, 33, 42, 57,

65, 82, 90,

106, 114, 130,

138, 146, 154

Supply voltage. VCC is the 3.3-V (with respect to GND) supply for the functional logic

gates.

VCC(5V)

8, 21, 54, 80,

108, 134

8, 19, 50, 72,

98, 122

Supply voltage. VCC(5 V) is the 5-V secondary supply voltage for the clamp diodes of

5-V tolerant input and output buffers. The clamp diodes provide protection for the

buffers in a 5-V switching environment.