參數(shù)資料
型號(hào)： AM79C850KCW
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： SUPERNET-R 3
中文描述： 1 CHANNEL(S), 100M bps, FDDI CONTROLLER, PQFP208
封裝： PLASTIC, QFP-208
文件頁(yè)數(shù)： 37/97頁(yè)
文件大?。?/td> 358K
代理商： AM79C850KCW
P R E L I M I N A R Y
AMD
37
SUPERNET 3
shifted out in the SHIFT_DR TAP controller state. The
BIST result register is 33 bits in length.
BYPASS Instruction
The BYPASS instruction is used to bypass the SUPER-
NET 3 BSR and shorten access times to other devices
on a board. This instruction selects the bypass register
for scanning between TDI and TDO during the Shift-DR
controller state. The SUPERNET 3 is not otherwise
affected by this instruction.
Boundary Scan Cells
In boundary scan most of the chip input and output
latches are linked together to form a scan chain. The
main purpose of this is for board level testing. The
boundary scan ring order is listed in the following table.
BSR Cell No.
Pin No.
Pin Type
Description
1
54
input
scrm
2
55
input
encoff
3
56
output
ebferr
4
67
output
fotoff
5
68
output
ulsb
6
69
output
lsr[2]
7
70
output
lsr[1]
8
71
output
lsr[0]
9
72
input
rpar
10
73
input
r[0]
11
74
input
r[1]
12
75
input
r[2]
13
77
input
r[3]
14
78
input
r[4]
15
79
input
r[5]
16
80
input
r[6]
17
81
input
r[7]
18
82
input
rcl
19
83
input
rcu
20
84
input
flxi
21
N/A
–
oe control (1 to enable)
22
86
output
xpar
23
87
output
x[0]
24
88
output
x[1]
25
89
output
x[2]
26
90
output
x[3]
27
91
output
x[4]
28
92
output
x[5]
29
93
output
x[6]
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