MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 110

• Manufacturer Part Number: MOD5234-100IR
• Description: MOD5234 10/100 ETHERNET MODULE
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5234-100IR

• Interface: I²C, SPI, UART
• Voltage - Supply: 2.5V
• Mounting Type: Surface Mount
• Package / Case: Module
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Format: -
• Baud Rates: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4483564

Enhanced Multiply-Accumulate Unit (EMAC)
Thus, the 48-bit accumulator definition is a function of the EMAC operating mode. Given that
each 48-bit accumulator is the concatenation of 16-bit accumulator extension register (ACCextn)
contents and 32-bit ACCn contents, the specific definitions are as follows:
if MACSR[6:5] == 00/* signed integer mode */
4-4
Complete Accumulator[47:0] = {ACCextn[15:0], ACCn[31:0]}
Extended Product
Product
Accumulator
Extended Product
+
Accumulator
Product
Figure 4-5. Signed and Unsigned Integer Alignment
+
Extension Byte Upper [7:0]
Extension Byte Upper [7:0]
40
X
Figure 4-4. Fractional Alignment
24
X
MCF5235 Reference Manual, Rev. 2
OperandY
OperandX
OperandY
OperandX
8
8
Extension Byte Lower [7:0]
8
8
40
40
8
8
8
Accumulator [31:0]
32
32
32
32
32
32
32
23
Accumulator [31:0]
Extension Byte Lower [7:0]
8
Freescale Semiconductor
“0”