cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 54

• Manufacturer Part Number: cx28560
• Description: Hdlc Controller
• Manufacturer: Mindspeed Technologies

Host Interfaces
2.2.1.2
Table 2-3. Register 1, Address 04h (1 of 2)
2-8
NOTE(S):
This value would normally indicate that the device is capable of supporting a 66 MHz clock, but the CX28560 does not.
Bit Field
26:25
20:16
15:10
31
30
29
28
27
24
23
22
21
Command
Name
Status
—
—
—
—
—
—
—
—
—
—
Register 1, Address 04h
The Status register records status information for PCI bus related events. The
Command register provides coarse control to generate and respond to PCI commands.
At reset, the CX28560 sets the bits in this register to 0, meaning the CX28560 is
logically disconnected from the PCI bus for all cycle types except configuration read
and configuration write cycles.
Reset
Value
01b
1b
1b
0
0
0
0
0
0
0
0
0
Type
RR
RR
RR
RR
RO
RO
RR
RO
RO
RO
RO
RO
Mindspeed Technologies™
Detected Parity Error.
This bit is set by the CX28560 whenever it detects a parity error, even if parity
error response is disabled.
Detected System Error.
This bit is set by the CX28560 whenever it asserts SERR.
Received Master Abort.
This bit is set by the CX28560 whenever a CX28560 initiated cycle is
terminated with a master abort.
Received Target Abort.
This bit is set by the CX28560 whenever a CX28560 initiated cycle is
terminated by a target-abort.
Unused
DEVSEL Timing.
Indicates the CX28560 is a medium speed PCI device. This means the longest
time it will take the CX28560 to return DEVSEL when it is a target is 3 clocks.
Data Parity Detected.
This bit is set by the CX28560 whenever the following 3 conditions are met:
The CX28560 asserted PERR or observed PERR
The CX28560 was the master for that transactions
Parity Error Response bit is set.
Fast Back-to-Back Capable. Read Only.
Indicates that the CX28560 is capable of accepting fast back-to-back
transactions when the transactions are not to the same agent.
Unused
Not 66 MHz Capable.
Unused
Unused
Advance Information
Description
CX28560 Data Sheet
28560-DSH-001-B