參數(shù)資料
型號: PCI1510ZVF
廠商: Texas Instruments, Inc.
英文描述: PC CARD CONTROLLERS
中文描述: PC卡控制器
文件頁數(shù): 64/128頁
文件大小: 735K
代理商: PCI1510ZVF
44
4.5
Status Register
The status register provides device information to the host system. Bits in this register can be read normally. A bit
in the status register is reset when a 1b is written to that bit location; a 0b written to a bit location has no effect. All
bit functions adhere to the definitions in the
PCI Local Bus Specification
. See Table 44 for a complete description
of the register contents.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Default
0
0
0
0
0
0
1
0
0
0
0
1
0
0
0
0
Register:
Offset:
Type:
Default:
Status
06h
Read-only, Read/Clear
0210h
Table 44. Status Register Description
BIT
SIGNAL
TYPE
FUNCTION
15
PAR_ERR
RC
Detected parity error. Bit 15 is set when a parity error is detected (either address or data).
14
SYS_ERR
RC
Signaled system error. Bit 14 is set when SERR is enabled and the controller signals a system error to the host.
13
MABORT
RC
Received master abort. Bit 13 is set when a cycle initiated by the controller on the PCI bus is terminated by a
master abort.
12
TABT_REC
RC
Received target abort. Bit 12 is set when a cycle initiated by the controller on the PCI bus is terminated by a
target abort.
11
TABT_SIG
RC
Signaled target abort. Bit 11 is set by the controller when it terminates a transaction on the PCI bus with a target
abort.
109
PCI_SPEED
R
DEVSEL timing. These bits encode the timing of DEVSEL and are hardwired 01b, indicating that the controller
asserts PCI_SPEED at a medium speed on nonconfiguration cycle accesses.
8
DATAPAR
RC
Data parity error detected.
0 = The conditions for setting bit 8 have not been met.
1 = A data parity error occurred, and the following conditions were met:
a. PERR was asserted by any PCI device including the controller.
b. The controller was the bus master during the data parity error.
c. The parity error response bit is set in the command register (PCI offset 04h, see Section 4.4).
7
FBB_CAP
R
Fast back-to-back capable. The controller cannot accept fast back-to-back transactions; therefore, bit 7 is
hardwired to 0b.
6
UDF
R
User-definable feature support. The controller does not support the user-definable features; therefore, bit 6 is
hardwired to 0b.
5
66MHZ
R
66-MHz capable. The controller operates at a maximum PCLK frequency of 33 MHz; therefore, bit 5 is
hardwired to 0b.
4
CAPLIST
R
Capabilities list. Bit 4 returns 1b when read. This bit indicates that capabilities in addition to standard PCI
capabilities are implemented. The linked list of PCI power-management capabilities is implemented in this
function.
30
RSVD
R
Reserved. Bits 30 return 0h when read.
4.6
Revision ID Register
The revision ID register indicates the silicon revision of the controller.
Bit
7
6
5
4
3
2
1
0
Default
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
Revision ID
08h
Read-only
00h
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