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DP83256VF Datasheet(PDF) 69 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83256VF
Description  PLAYERa??Device (FDDI Physical Layer Controller)
PDF  144 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83256VF Datasheet(HTML) 69 Page - National Semiconductor (TI)

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50 Registers (Continued)
525 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
IDR
DEVICE DESCRIPTION
(hex)
10
PLAYERa Revision A
11
PLAYERa Revision B
ACCESS RULES
ADDRESS
READ
WRITE
18h
Always
Write Reject
D7
D6
D5
D4
D3
D2
D1
D0
DID7
DID6
DID5
DID4
DID3
DID2
DID1
DID0
Bit
Symbol
Description
D0 – D3
DID0 – DID3
DEVICE ID BIT k0-3l
Circuit enhancement revision number Bit 3 is the MSB The initial revision of the
PLAYERa is equal to 0 and enhancements will increment this number
D4 – D7
DID4 – DID7
DEVICE ID BIT k4-7l
Architecture level of the PHY device Bit 7 is the MSB The original PLAYER
device was equal to 0 and the PLAYERa is equal to 1 This number will only be incremented after a
significant architectural change
69



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