MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 112

• 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)
4.4
The EMAC provides the following program-visible registers:
These registers are shown in
4.4.1
MACSR functionality is organized as follows:
Table 4-1
4-6
• Four 32-bit accumulators (ACCn = ACC0, ACC1, ACC2, and ACC3)
• Eight 8-bit accumulator extensions (two per accumulator), packaged as two 32-bit values
• One 16-bit mask register (MASK)
• One 32-bit MAC status register (MACSR) including four indicator bits signaling product
• MACSR[11–8] contains one product/accumulation overflow flag per accumulator.
• MACSR[7–4] defines the operating configuration of the MAC unit.
• MACSR[3–0] contains indicator flags from the last MAC instruction execution.
Reset
Field
R/W
for load and store operations (ACCext01 and ACCext23)
or accumulation overflow (one for each accumulator: PAV0–PAV3)
31
describes MACSR fields.
Memory Map/Register Definition
MAC Status Register (MACSR)
—
31
Figure 4-7. MAC Status Register (MACSR)
Figure
Figure 4-6. EMAC Register Set
0000_0000_0000_0000_0000_0000_0000_0000
MCF5235 Reference Manual, Rev. 2
12
4-6.
Prod/acc overflow flags
0
ACCext01
ACCext23
MACSR
MASK
ACC0
ACC1
ACC2
ACC3
PAVx
11–8
R/W
Extensions for ACC0 and ACC1
Extensions for ACC2 and ACC3
MAC accumulator 0
MAC accumulator 1
MAC accumulator 2
MAC accumulator 3
MAC status register
MAC mask register
OM
C
7
Operational Mode
S/U
6
F/I
5
R/T
4
N
3
Freescale Semiconductor
Z
2
Flags
V
1
EV
0