s1r72801 Epson Electronics America, Inc., s1r72801 Datasheet - Page 59
s1r72801
Manufacturer Part Number
s1r72801
Description
Ieee1394 Controller S1r72801f00a
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.S1R72801.pdf
(113 pages)
- Current page: 59 of 113
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Node IDS Status Register (Higher Rank, Lower Rank)
0x20, 0x21 .Bit7..6 Bus ID
0x21 Bit5:0 PHY ID
PHY Register Access Control Register (Higher Rank)
Bit7 PHY Register Read Request
Bit6 PHY Register Write Request
Bit5 Reserved
Bit4 Reserved
Bit3..0 PHY Access Register
Address Register Name
Address Register Name
0x20
0x21
0x24
This register indicates the bus ID of topology connected through the serial bus.
At the time of BusReset, the BusID does not change. When the self node is a bus manager, this register is
writable. If you write when it is not a bus manager, the bus goes out of control. Never write when it is not a
bus manager.
The PHY ID becomes a value of the 0x3F at the time of BusReset and is automatically stored on completion
of the Self-ID processing.
These bits are areas to store the Bus_ID value of the serial bus.
Indicates the Physical ID of a node established by the PHY in the Self-ID phase.
When requesting the PHY Register for a register read, this bit is set to “1”. After the execution, it is automatically
cleared.
When requesting the PHY Register for a register write, this bit is set to “1”. After the execution, it is
automatically cleared.
Set a register address to access the PHY Register.
NODE_IDS_H
NODE_IDS_L
UltraDmaMode
PhyAccCtl_H
7: BusID[9]
6: BusID[8]
5: BusID[7]
4: BusID[6]
3: BusID[5]
2: BusID[4]
1: BusID[3]
0: BusID[2]
7: BusID[1]
6: BusID[0]
5: PhyID[5]
4: PhyID[4]
3: PhyID[3]
2: PhyID[2]
1: PhyID[1]
0: PhyID[0]
7: RdReq
6: WrReq
5:
4:
3: ReqAdd[3]
2: ReqAdd[2]
1: ReqAdd[1]
0: ReqAdd[0]
Bit Symbol
Bit Symbol
R/W
R/W
R/W
R/W
R/W
R/W
R
EPSON
Serial Bus ID Number
Single Bus, Bus ID = 0x3FF
Multiple Bus, Bus ID is uniquely specifying
0: Normal
0: Normal
0:
0:
PHY Register Read/Write Request Address
Self Node's Physical ID Number
1: PHY Reg Rd Request
1: PHY Reg Wr Request
1:
1:
Description
Description
S1R72801F00A
H.Rst S.Rst B.Rst
H.Rst S.Rst B.Rst
0xFF
0xFF
0x00 0x00
–
–
–
–
–
1
1
1
1
1
1
–
55
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