isp1564 NXP Semiconductors, isp1564 Datasheet - Page 17

• Manufacturer Part Number: isp1564
• Description: Isp1564 Hi-speed Universal Serial Bus Pci Host Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 8.
Table 9.
ISP1564_1
Product data sheet
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Bit
15
14
13
12
11
10 to 9
8
7
6
Symbol
DPE
SSE
RMA
RTA
STA
DEVSELT
[1:0]
MDPE
FBBC
reserved
Status register (address 06h) bit allocation
Status register (address 06h) bit description
8.2.1.4 Status register
FBBC
DPE
15
R
R
0
7
0
Description
Detected Parity Error: This bit must be set by the device whenever it detects a parity error, even if
the parity error handling is disabled.
Signaled System Error: This bit must be set whenever the device asserts SERR#. Devices that
never assert SERR# do not need to implement this bit.
Received Master Abort: This bit must be set by a master device whenever its transaction, except for
special cycle, is terminated with master abort. All master devices must implement this bit.
Received Target Abort: This bit must be set by a master device whenever its transaction is
terminated with target abort. All master devices must implement this bit.
Signaled Target Abort: This bit must be set by a target device whenever it terminates a transaction
with target abort. Devices that never signal target abort do not need to implement this bit.
DEVSEL Timing: These bits encode the timing of DEVSEL#. There are three allowable timing to
assert DEVSEL#:
00b — Fast
01b — Medium
10b — Slow
11b — Reserved
These bits are read-only and must indicate the slowest time that a device asserts DEVSEL# for any
bus command, except Configuration Read and Configuration Write.
Master Data Parity Error: This bit is implemented by bus masters. It is set when the following three
conditions are met:
Fast Back-to-Back Capable: This read-only bit indicates whether the target is capable of accepting
fast back-to-back transactions when the transactions are not to the same agent. This bit can be set to
logic 1, if the device can accept these transactions; and must be set to logic 0 otherwise.
-
•
•
•
The Status register is a 2-byte read-only register used to record status information on PCI
bus-related events. For bit allocation, see
The bus agent asserted PERR# itself, on a read; or observed PERR# asserted, on a write.
The agent setting the bit acted as the bus master for the operation in which error occurred.
PER (bit 6 in the Command register) is set.
reserved
SSE
14
R
R
0
6
0
66MC
RMA
13
R
R
0
5
0
Rev. 01 — 4 December 2006
RTA
CL
12
R
R
0
4
1
Table
STA
11
R
R
0
3
0
8.
10
R
R
0
2
0
DEVSELT[1:0]
HS USB PCI Host Controller
reserved
R
R
9
1
1
0
© NXP B.V. 2006. All rights reserved.
ISP1564
MDPE
R
R
8
0
0
0
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