s1r72803 Epson Electronics America, Inc., s1r72803 Datasheet - Page 82

• Manufacturer Part Number: s1r72803
• Description: Link/transaction Controller
• Manufacturer: Epson Electronics America, Inc.

S1R72803F00A
Bus Reset ORB Pointer Register
Maintenance Control Register
Bit7 Error Header CRC
Bit6 Error Data CRC
Bit5 No Packet
Bit4 F_Ack
Bit3 No_Ack
Bit2..0 Reserved
78
Address Register Name
Address Register Name
0x5A
0x5B
0x5E
This Bus Reset Header Pointer Register holds the value of a PostRxORBPtr when a bus reset occurs. When
several bus resets occur, it is updated to the latest PostRxORBPtr. This register is read-only and writing to this
register is ignored.
This Maintenance Control Register enables intentional generation of a serial bus error.
Writing “1” to this bit sets an invalid value for the Header CRC of a transmit packet to be generated next.
After transmitting it, this bit is cleared to “0”.
Writing “1” to this bit sets an invalid value for the Data CRC of a transmit packet to be generated next.
After transmitting it, this bit is cleared to “0”.
Writing “1” to this bit abandons a transmit packet to be generated next. Immediately after abandoning it, this
bit is cleared.
Writing “1” to this bit transmits the value in the MainCtl(Lo).Ack Register to the ACK packet to be generated
next. Immediately after transmitting it, this bit is cleared to “0”.
Writing “1” to this bit abandons the ACK packet to be generated next without transmitting it. Immediately after
abandoning it, this bit is cleared to “0”.
BRstORBPtr_H 7:
BRstORBPtr_L
MaintCtl_H
6:
5:
4: BusRstORBPtr[12]
3: BusRstORBPtr[11]
2: BusRstORBPtr[10]
1: BusRstORBPtr[9]
0: BusRstORBPtr[8]
7: BusRstORBPtr[7]
6: BusRstORBPtr[6]
5: BusRstORBPtr[5]
4: BusRstORBPtr[4]
3: BusRstORBPtr[3]
2: BusRstORBPtr[2]
1:
0:
7: E_Hcrc
6: E_Dcrc
5: No_Pkt
4: F_Ack
3: N_ack
2:
1:
0:
Bit Symbol
Bit Symbol
R/W
R/W
R/W
R/W
R/W
R/W
0:
0:
0:
0:
0:
0:
0:
0:
R/W
EPSON
R
Write is ignore
Read is always zero
Bus Reset ORB-Data Area Pointer
This register indicates Address
when BusRest detected.
Write is ignore
Read is always zero
in Rx ORB Data Area
1: Add Header CRC Error
1: Add Data CRC Error
1: No Transmit Next Packet
1: Tx Optional AckCode
1: No Transmit AckPacket
1:
1:
1:
Description
Description
H.Rst S.Rst B.Rst
H.Rst S.Rst B.Rst
0x00 0x00
0x00 0x00
0x00 0x00
–
–
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