AM79C850 datasheet(41/97 Pages) AMD

41 / 97 page

P R E L I M I N A R Y

AMD

SUPERNET 3

BSR Cell No.

Pin No.

Pin Type

Description

207

output

npmemack

208

output

ready (oecell –1 to force 0, 0 to disable)

209

input

210

input

211

input

csi

212

input

lsclk

213

input

npa[7]

214

input

npa[6]

215

input

npa[5]

216

input

npa[4]

217

input

npa[3]

218

input

npa[2]

219

input

npa[1]

220

input

npa[0]

221

input

npmode

222

input

rst

Built-In Self Test (BIST)

The BIST feature of the SUPERNET 3 is provided to

ease board and system level testing, as well as our own

manufacturing testing. This feature can be accessed

through the TAP as well as the system interface. It is

expected that board level testing will use the TAP

interface, while system level testing will not have access

to the TAP interface and will need to run BIST through

the system interface.

There are two functional units in the SUPERNET 3 that

are tested with BIST. These are the AF CAM core and

the enhanced PHY. The BIST testing of the two

functional units is available through the node processor

interface. See the AF specification for a description of

how to run the BIST for the AF. The enhanced PHY BIST

is run using the PHY BIST access as described in the

SUPERNET 2 PLC data sheet.

Function

BIST Signature (hex)

Internal PLC BIST

5B6B

Address Filter BIST

0553

SCANBIST

1 5B6B 0553

DISCRY function no longer supported

Setting the DISCRY bit in mode register 1 (MDREG1,

bit 6) permitted testing the operation of certain internal

timers such as TRT, THT, TVX, and TMSYNC by

breaking them into smaller segments.

With the enhanced testability features of SUPERNET 3,

the DISCRY function is no longer provided. The bit 6 of

mode register 1 (MDREG1) is reserved and shall return

a value of zero when read.

Summary of Changes to Status and Mode

Registers

The following is the summary of changes. The bits in the

SUPERNET 2. All reserved bits shall be read as zero

except where noted.

AM79C850 Datasheet(PDF) 41 Page - Advanced Micro Devices

AM79C850 Datasheet(HTML) 41 Page - Advanced Micro Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

Datasheet Download

Link URL