DP83257VF National Semiconductor, DP83257VF Datasheet - Page 28

• Manufacturer Part Number: DP83257VF
• Description: IC FDDI LAYER CTRLR 160PQFP
• Manufacturer: National Semiconductor

Specifications of DP83257VF

• Controller Type: physical layer controller
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-BFQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Interface: -
• Other names: *DP83257VF

3 0 Functional Description
National Byte-Wide Code Example
Assume the receiver is in the Idle Line State
98765
11111
11111
11111
11000
–––-
–––-
–––-
(More data
–––-
–––-
–––-
01101
00111
11111
11111
11111
11111
11111
00100
00100
00100
00100
00100
00100
00100
00100
00100
00100
11111
11111
11111
Incoming 5B Code
43210
11111
11111
11111
10001
–––-
–––-
–––-
–––-
–––-
–––-
00111
00111
11111
11111
11111
11111
11111
00100
00100
00100
00100
00100
00100
00100
00100
00100
00100
11111
11111
11111
)
(II)
(II)
(II)
(JK)
(xx)
(xx)
(xx)
(xx)
(xx)
(xx)
(TR)
(RR)
(II)
(II)
(II)
(II)
(II)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(II)
(II)
(II)
C
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3210
1010
1010
1010
1101
–––
–––
–––
–––
–––
–––
0101
0110
1010
1010
1010
1010
1010
0001
0001
0001
0001
0001
0001
0001
0001
0001
0001
1010
1010
1010
Decoded 4B Code
(Continued)
C
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3210
1010
1010
1010
1102
–––
–––
–––
–––
–––
–––
0110
0110
1010
1010
1010
1010
1010
0001
0001
0001
0001
0001
0001
0001
0001
0001
0001
1010
1010
1010
(II)
(II)
(II)
(JK)
(xx)
(xx)
(xx)
(xx)
(xx)
(xx)
(TR)
(RR)
(II)
(II)
(II)
(II)
(II)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(HH)
(II)
(II)
(II)
28
C
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
National Byte-Wide Code (w o parity)
7654
1011
1011
1011
1101
–– –
–– –
–– –
–– –
–– –
–– –
0101
0110
1010
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
0011
0011
0011
0011
1011
1011
3210
0001
0001
0001
1101
–– –
–– –
–– –
–– –
–– –
–– –
0110
0110
1010
1010
0001
0001
0001
1001
1001
1001
1001
1001
1001
1001
0101
0101
0101
1101
0001
0001
(I -k-ILS)
(I -k-ILS)
(I -k-ILS)
(JK Symbols)
(Data Symbols)
(Data Symbols)
(Data Symbols)
(Data Symbols)
(Data Symbols)
(Data Symbols)
(T and R Symbols)
(Two R Symbols)
(Idle Symbols)
(Idle Symbols)
(I -k-ILS)
(I -k-ILS)
(I -k-ILS)
(I -u-ILS)
(I -u-ILS)
(I -u-ILS)
(I -u-ILS)
(I -u-ILS)
(I -u-ILS)
(I -u-ILS)
(V -k-HLS)
(V -k-HLS)
(V -k-HLS)
(V -u-HLS)
(I -k-ILS)
(I -k-ILS)