cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 272
cs5535
Manufacturer Part Number
cs5535
Description
Geode Cs5535 Companion Multi-function South Bridge
Manufacturer
National Semiconductor Corporation
Datasheet
1.CS5535.pdf
(555 pages)
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USB Register Descriptions
5.5.3.5
Index
Type
Reset Value
5.5.3.6
Index
Type
Reset Value
23
10:9
Bit
6:0
Bit
7:0
15
14
13
12
11
8
7
22
7
Device Revision Identification (USBC_PCI_DEVREVID)
PCI Class Code (USBC_PCI_CLASS)
21
Name
PAR_ERR
SERR_ERR
RCVD_MSTR_
ABT_STS
RCVD_TRGT_
ABT_STS
SIG_TRGT_
ABT_STS
DEVSEL_TIME
DATA_PAR
FB2B
RSVD
Name
DEV_REV_ID
20
08h
RO
06h
09h
RO
0C0310h
19
6
18
17
Description
Detected Parity Error. This bit is set whenever the USB detects a parity error, even if
the Parity Error (response) detection enable bit (Index 04h[6]) is disabled. Write 1 to
clear.
SERR# Status. This bit is set whenever the USB detects a PCI address error. Write 1
to clear.
Received Master Abort Status. This bit is set when the USB, acting as a PCI master,
aborts a PCI bus memory cycle. Write 1 to clear.
Received Target Abort Status. This bit is set when a USB generated PCI cycle (USB
is the PCI master) is aborted by a PCI target. Write 1 to clear.
Signaled Target Abort Status. This bit is set whenever the USB signals a target abort.
Write 1 to clear.
DEVSEL# Timing (Read Only). These bits indicate the DEVSEL# timing when per-
forming a positive decode. Since DEVSEL# is asserted to meet the medium timing,
these bits are encoded as 01.
Data Parity Reported. Set to 1 if the Parity Error bit (Command Register bit 6) is set,
and USB detects PERR# asserted while acting as PCI master (whether PERR# was
driven by USB or not).
Fast Back-to-Back Capable (Read Only). USB does support fast back-to-back trans-
actions when the transactions are not to the same agent. This bit is always 1.
Reserved. Set to 0.
Description
Device Revision ID.
16
5
USBC_PCI_DEVREVID Bit Descriptions
(Continued)
USBC_PCI_DEVREVID Register Map
USBC_PCI_CLASS Register Map
USBC_PCI_STS Bit Descriptions
15
14
13
4
DEV_REV_ID
PCI_CLASS
12
272
11
10
3
9
8
2
7
6
5
1
4
3
2
Revision 0.8
0
1
0
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