DP83266VF National Semiconductor, DP83266VF Datasheet - Page 133

• Manufacturer Part Number: DP83266VF
• Description: IC MEDIA ACSS CTRL INTF 160PQFP
• Manufacturer: National Semiconductor

Specifications of DP83266VF

• Applications: *
• Voltage - Supply: 4.75 V ~ 5.25 V
• Package / Case: 160-BFQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Other names: *DP83266VF

8 0 Signal Descriptions
8 2 1 PHY Interface Codes
The DP83256 57 PLAYER
Interface The PH DATA Indication table shows how the Ring Engine interprets the codes generated by the PLAYER
and the PH DATA Request table shows the codes generated by the Ring Engine
The internal code is actually an 8B 9B code with parity where one bit is used to determine whether the symbol pair contains two
data symbols or at least one control symbol
PH DATA Indication
The Ring Engine interprets the byte stream the PLAYER
where
PIP
PIC
PID(7 –0) PHY Indicate Data(7–0)
P
x –
The PLAYER aligns the received JK to a byte boundary Thus no provision is made in the internal code or by the Ring Engine for
off boundary JKs
0
1
254
255
JK
PI
PI
I I
nI
RR
RS
RT
SS
SR
ST
SX
TX
TR
TS
TT
nT
Parity Error
Other wise
Value
PHY Indicate Parity bit ODD parity
PHY Indicate Control bit
represents ODD Parity ( E P is Bad Parity)
represents a don’t care and is not decoded
represents a 1 or 0 but not both
0
1
t
t
data byte
control mixed byte
a
PIP
1
0
0
1
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
device converts the Standard 4B 5B FDDI symbol code to the internal code used at the PHY
(Continued)
TABLE 8-1 Internal PHY Indicate Coding
PIC
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
a
device as defined in Table 8-1
PID(7– 4)
133
0000
0000
1111
1111
1101
0000
0110
0110
0110
0111
0111
0111
0111
0101
0101
0101
0101
0000
x011
x011
10xx
Else
PID(3– 0)
0000
0001
1110
1111
x1xx
xx1x
xxxx
0110
0111
0101
0111
0110
0101
0110
0111
0101
0101
10xx
xxxx
xxxx
xxxx
Data Symbol Pair
Data Symbol Pair
Data Symbol Pair
Data Symbol Pair
Start Delimiter
PH Invalid
PH Invalid
Idle Symbols
Data Idle Symbol
Frame Status
Frame Status
Frame Status
Frame Status
Frame Status
Frame Status
Frame Status
Ending Delimiter
Ending Delimiter
Ending Delimiter
Ending Delimiter
Mixed Symbol Pair
Code Violation
Code Violation
Type
a
device