IPPOSPHYL2 Altera, IPPOSPHYL2 Datasheet - Page 44

• Manufacturer Part Number: IPPOSPHYL2
• Manufacturer: Altera

Specifications of IPPOSPHYL2

• Lead Free Status / RoHS Status: Not Compliant

3–16
Interface Signals
POS-PHY Level 2 and 3 Compiler User Guide
1
Table 3–7. Multi- & Single-Channel Packet Available Mode Options (POS-PHY Level 2)
Direct (No Addressing) mode does not include address matching or bus tri-stating
(currently not supported).
Base Address
Base address is only supported in POS-PHY level 2 mode. It configures the base
address of the POS-PHY port. For a single channel interface (‘A’ or ‘B’), the interface
responds to only the configured base address. For a multi-channel interface (‘A’ only),
the interface responds to addresses between base address and base address + number
of ‘B’ interfaces.
SX Always
SX always is only valid for POS-PHY level 3 link transmit (multi-channel) or PHY
receive (source) interfaces. You can set the SX output behavior to one of the following
conditions:
■
■
For POS-PHY level 3 sink interfaces, the MegaCore function supports either behavior
transparently.
The following section describes the interface signals for the MegaCore functions.
Figure 3–15
Direct
Polled
Polled (Ignore
stpa)
Normal—generates an SX cycle only when changing channels
Always—an SX cycle is generated for every burst and at the end of packets
Option
shows the input/output specification.
In the POS-PHY transmit direction the MegaCore
function uses one dtpa pin per supported channel.
In the POS-PHY receive direction the MegaCore
function uses one drpa pin per supported channel.
In the POS-PHY transmit direction the MegaCore
function uses tadr, ptpa, and stpa to support all
channels. In the POS-PHY receive direction the
MegaCore function uses radr and prpa to support
all channels.
In the POS-PHY transmit direction the MegaCore
function uses tadr and ptpa pins to support all
channels. The stpa signal is removed from the
MegaCore function.
Preliminary
Description
© November 2009 Altera Corporation
Chapter 3: Functional Description
Interface Signals