EASY 6996M CPU Infineon Technologies, EASY 6996M CPU Datasheet - Page 78

• Manufacturer Part Number: EASY 6996M CPU
• Description: BOARD EVAL W/CPU ADM6996M
• Manufacturer: Infineon Technologies
• Series: Samurair

Specifications of EASY 6996M CPU

• Main Purpose: Interface, Ethernet
• Embedded: No
• Utilized Ic / Part: ADM6996M
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Primary Attributes: -
• Other names: EASY6996MCPUIN

When Samurai-6M/6MX (ADM6996M/MX) detects that there is address match, then it will enable Read/Write
capability for external access. When address is mismatched, then Samurai-6M/6MX (ADM6996M/MX) will tristate
the EDI pin.
(B) Read Switch Register via SMI Interface (Offset Hex = 10’h2, Data = 16’h2600)
(C) Write Switch Register via SMI Interface (Offset Hex = 10’h180, Data = 16’h1300)
Table 48
Pin Name
EECS
EESK
EDI
EDO
How to Use Samurai 16-bit Mode SMI to Access EEPROM/Counter/PHY Register by CPU MDC/MDIO
Interface
Samurai supports 16-bit mode SMI interface to access EEPROM/Counter/PHY Register by CPU MDC/MDIO
interface. The SMI interface consists of two pins, management data clock (EESK) and management data
input/output (EEDI).
Figure 16
•
Data Sheet
EDI(ADM6996I/M)
The difference between SMI Command and MDC/MDIO Command
– Samurai SMI Command uses 10-bit register address to access allocate EEPROM/Counter/PHY Register.
EDI (CPU)
EDI(CPU)
EESK
EESK
(D) The Pin Type of EECS, EESK, EDI and EDO during the Operation
SMI Interface
Preamble
z
Preamble
z
0
Start
Reset Operation
Input
Input
Input
Input
0
1
Start
1
0
Opcode
(Write)
1
Opcode
(Read)
1
0
0
0
1
Register Address (10'h180 in this example)
0
1
0
0
Register Address (10'h2 in this example)
0
0
0
0
Load EEPROM
Output
Output
Output
Input
0
0
0
0
0
SMI Write Operation
0
SMI Read Operation
1
0
78
0
1
TA
z
TA
0
0
0
0
0
0
Write Operation
Input
Input
Input
Input
0
1
1
0
Register Data (16'h1300 in this Example)
0
0
Register Data (16'h2600 in this Example)
0
1
1
1
1
0
0
0
0
Revision 1.4, 2006-03-24
0
Function Description
0
Read Operation
Input
Input
Input
Input/Output
~
~
Samurai-6M/MX
ADM6996M/MX
One more EESK is needed
~
~
0
0
0
One more EESK is needed
0
0
0
z
z