DP83256VF-AP NSC [National Semiconductor], DP83256VF-AP Datasheet - Page 69
DP83256VF-AP
Manufacturer Part Number
DP83256VF-AP
Description
Manufacturer
NSC [National Semiconductor]
Datasheet
1.DP83256VF-AP.pdf
(144 pages)
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D0 –D3
D4 –D7
5 0 Registers
5 25 DEVICE ID REGISTER (IDR)
The Device ID Register contains the binary equivalent of the revision number for this device It can be used to ensure proper
software and hardware versions are matched
During a Control Bus Interface write cycle the Control Bus Write Command Register bit (CCR) of the Interrupt Condition
Register (ICR) will be set to 1 and will ignore write cycle
REVISION TABLE
ACCESS RULES
Bit
(hex)
DID7
IDR
ADDRESS
D7
10
11
18h
DID0–DID3
DID4–DID7
Symbol
DID6
DEVICE DESCRIPTION
PLAYER
PLAYER
D6
(Continued)
DEVICE ID BIT
PLAYER
DEVICE ID BIT
device was equal to 0 and the PLAYER
significant architectural change
Always
READ
a
a
Revision A
Revision B
DID5
a
D5
is equal to 0 and enhancements will increment this number
k
k
0-3
4-7
Write Reject
l
l
DID4
WRITE
D4
Circuit enhancement revision number Bit 3 is the MSB The initial revision of the
Architecture level of the PHY device Bit 7 is the MSB The original PLAYER
DID3
D3
a
69
is equal to 1 This number will only be incremented after a
Description
DID2
D2
DID1
D1
DID0
D0
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