r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 530
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r5s77631ay266bgv
Manufacturer Part Number
r5s77631ay266bgv
Description
Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5S77631AY266BGV.pdf
(2026 pages)
- Current page: 530 of 2026
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Section 13 PCI Controller (PCIC)
(4)
This status register is used to record status information for PCI bus related events. The definition
of each of the bits is given in the table below. A device may not need to implement all the bits,
depending on device functionality. For instance, since a device that acts as a target does not
inform a target abort, bit 11 does not need to be implemented. Reserved bits should be read-only
and return zero when the bits are read.
Reads from this register operates normally. Writes are slightly different in that bits can be cleared,
but not set. A one bit is cleared whenever the register is written to, and the write data in the
corresponding bit location is a 1. For instance, to clear bit 14 and not affect any other bits, write
the value of B'0100 0000 0000 0000 to the register.
Rev. 1.00 Oct. 01, 2007 Page 464 of 1956
REJ09B0256-0100
Initial value:
Bit
15
14
PCI R/W:
SH R/W:
PCI Status Register (PCISTATUS)
Bit:
Bit Name
DPE
SSE
R/WC R/WC
R/WC R/WC
DPE
15
0
SSE
14
0
R/WC
R/WC
RMA
Initial
Value
0
0
13
0
R/WC
R/WC
RTA
12
0
R/W
SH: R/WC
PCI: R/WC
SH: R/WC
PCI: R/WC
R/WC
R/WC
STA
11
0
10
R
R
0
DEVSEL
Description
Parity Error Detect Status
Indicates that a parity error has been detected in read
data when the PCIC is a master or in write data when
the PCIC is a target.
This bit must be set by the device whenever it detects
a parity error, even if parity error handling is disabled.
0: Device is not detecting parity error.
1: Device is detecting parity error.
System Error Output Status
Indicates that the PCIC has asserted the SERR
signal.
0: SERR has not been asserted
1: SERR has been asserted (the value retained until
R
R
9
1
cleared)
R/WC
R/WC
MDPE
8
0
FBBC
R
R
7
1
R/W
R
6
0
R/W
66C
R
5
0
CL
R
R
4
1
R
R
3
0
R
R
2
0
R
R
1
0
R
R
0
0
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