cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 58

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

Host Interfaces
2.2.1.9
Table 2-10. Register 15, Address 3Ch
2.2.2
2.2.3
2-12
Bit Field
31:24
23:16
15:8
7:0
Maximum Latency
Minimum Grant
Interrupt Pin
Interrupt Line
Name
PCI Reset
PCI Throughput and Latency Considerations
Register 15, Address 3Ch
The CX28560 resets all internal functions when it detects the assertion of the PRST*
signal line. Upon reset, the following occurs:
For reference to PCI throughput and latency considerations see
• All PCI output signals are three-stated immediately and asynchronously with
• All EBUS output signals are three-stated immediately and asynchronously
• All writable/resettable internal register bits are set to 0.
• All PCI transfers are terminated immediately.
• All serial data transfers are terminated immediately.
• All POS-PHY transfers are terminated immediately. Output signals are three-
• The CX28560 is disabled and responds only to PCI configuration cycles.
• All data is lost.
respect to the PCI clock input, PCLK.
with respect to the EBUS clock output, ECLK.
stated immediately and asynchronously to the POS-PHY clocks.
Reset
Value
01h
01h
0Fh
0
Mindspeed Technologies™
Type
RW
RO
RO
RO
Advance Information
Specifies how quickly the CX28560 needs to gain access to the PCI
Defines which PCI interrupt pin the CX28560 uses. 01h means the
Communicates interrupt line routing. System initialization software
bus. The value is specified in 0.25 µs increments and assumes a 33
MHz clock. A value of 0Fh means Tanfo needs to gain access to the
PCI bus every 130 PCI clocks, expressed as 3.75 µs in this register.
Specifies, in 0.25 µs increments, the minimum burst period the
CX28560 needs. The CX28560 does not have any special MIN_GNT
requirements.
CX28560 uses pin INTA*.
writes a value to this register indicating which host interrupt
controller input is connected to the CX28560’s INTA* pin.
Description
Appendix
CX28560 Data Sheet
28560-DSH-001-B
H.