Epson S1R75801F00A Technical Manual page 82

S1R72803F00A
Address Register Name
0x5A BRstORBPtr_H 7:
0x5B BRstORBPtr_L
Bus Reset ORB Pointer Register
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.
Address Register Name
0x5E MaintCtl_H
Maintenance Control Register
This Maintenance Control Register enables intentional generation of a serial bus error.
Bit7 Error Header CRC
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".
Bit6 Error Data CRC
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".
Bit5 No Packet
Writing "1" to this bit abandons a transmit packet to be generated next. Immediately after abandoning it, this
bit is cleared.
Bit4 F_Ack
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".
Bit3 No_Ack
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".
Bit2..0 Reserved
78
Bit Symbol
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:
Bit Symbol R/W
7: E_Hcrc R/W
6: E_Dcrc R/W
5: No_Pkt R/W
4: F_Ack R/W
3: N_ack R/W
2:
1:
0:
R/W Description
Write is ignore
Read is always zero
Bus Reset ORB-Data Area Pointer
R This register indicates Address
in Rx ORB Data Area
when BusRest detected.
Write is ignore
Read is always zero
Description
0: 1: Add Header CRC Error
0: 1: Add Data CRC Error
0: 1: No Transmit Next Packet
0: 1: Tx Optional AckCode
0: 1: No Transmit AckPacket
0: 1:
0: 1:
0: 1:
EPSON
H.Rst S.Rst B.Rst
0x00 0x00 –
0x00 0x00 –
H.Rst S.Rst B.Rst
0x00 0x00 –