Siemens ERTEC200 - Manual (Page 88)

9 Multiport Ethernet PHY
A 2-fold multiport PHY (Physical Layer Transceiver) that supports the following transfer modes is integrated in the
ERTEC 200:
• 10BASE-T
• 100BASE-TX
• 100BASE-FX
These transfer modes are available separately for each port and can be set differently.
The PHY is compatible with the following standards:
• IEEE802.3
• IEEE802.3u
• ANSI
X3.263-1995
• ISO/IEC9314
The data interface with the Ethernet MACs takes place via MII. The management interface can be addressed via the
MDIO interface (SMI interface). The 25 MHz clock supply is to be provided as follows:
•
25 MHz quartz on the ERTEC 200 pins CLKP_A and CLKP_B or
•
25 MHz clock on the ERTEC 200 pin CLKP_A
In addition to the basic functionalities of the transfer modes 10BASE-T, 100BASE-TX, and 100BASE-FX, the PHYs also
support:
• Auto-negotiation
• Auto-crossing
• Auto-polarity
The following PHY registers can be assigned via the SMI interface:
Register-Nr. Description Group
0 Basic-Control-Register Basic
1 Basic-Status-Register Basic
2 PHY-Identifier
1 Extended
3 PHY-Identifier 2 Extended
4 Auto Negotiation Advertisement Register Extended
5 Auto Negotiation Link Partner Ability Register Extended
6 Auto Negotiation Expansion Register Extended
7 Next Page Timing Register Extended
8 - 15 Non-supported registers ------
16 Silicon Revision Code Vendor-specific
17 ModeControl/ Status Register Vendor-specific
18 Special Modes Vendor-specific
19 SMII Configuration Status Register Vendor-specific
20 - 26 Reserved Vendor-specific
27 Control/Status Indication Register Vendor-specific
28 Special Internal Testability Register Vendor-specific
29 Interrupt Source Register Vendor-specific
30 Interrupt mask register Vendor-specific
31 PHY Special Control/Status Register Vendor-specific
For an exact description of the PHY registers, refer to /13/.
During a hardware reset or when leaving the Power Down State (Px_PHY_ENB = 1), an initial configuration is set on an
internal Config port of the PHY. This configuration can be modified later in the PHY register set. The internal Config port
comprises the following parameter assignment, which at present can be permanently set or set via software in the
PHY_CONFIG system control register.
Copyright © Siemens AG 2007. All rights reserved. 88 ERTEC 200 Manual
Technical data subject to change Version 1.1.0