BBus slave and DMA interface
698
NS9750 Hardware Reference
Extensibility Byte Requested by Host
Address: 9040 0124
This register is updated shortly after a new negotiation occurs (event 4 of the
negotiation process; see the IEEE 1284 standard for more information).
Register bit assignment
Extended Control register
Address: 9040 0128
The Extended Control register enables additional core features.
Bits Access Mnemonic Reset Description
D31:08 N/A Reserved N/A N/A
D07:00 R/W exr 0x0 Extensibility byte
Stores the extensibility byte received from the host.
Table 406: exr — Extensibility Byte Requested by Host register
exr
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
Reserved
Not
used
EnRev
DtTrn
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved
Reserved Reserved