EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 327

• Manufacturer Part Number: EP9302-CQZ
• Description: IC ARM9 SOC PROCESSOR 208LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9302-CQZ

• Program Memory Type: ROMless
• Package / Case: 208-LQFP
• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 19
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 5x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• Data Ram Size: 16 bit
• Interface Type: USB, USART, SPI
• Maximum Clock Frequency: 200 MHz
• Number Of Programmable I/os: 37
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: EDB9302A-Z
• Controller Family/series: (ARM9)
• No. Of I/o's: 19
• Ram Memory Size: 16MB
• Cpu Speed: 200MHz
• No. Of Timers: 4
• Embedded Interface Type: AC97, I2S, SPI, UART, USB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1132 - KIT DEVELOPMENT EP9302 ARM9
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1137

DS785UM1
9.2.3.6 Receive Frame Pre-Processing
The MAC pre-processes all incoming receive frames. First the frame is either passed on to
the next level or discarded according to the destination address filter. The next decision is
whether to accept the frame. A frame is accepted when the frame data are brought into MAC
through internal memory. The final step in frame pre-processing is the decision on causing an
interrupt. These pre-processing steps are detailed in
A c c e p t M a s k s :
P r o m i s c u o u s A
B r o a d c a s t A
F i l t e r T a p s :
C R C R u n t A
In d i v i d u a l A
M u l t i c a s t A
E n d O f S r e a m i E
IA H a s h A
i E - M a s k T a p s :
R e c e i v e S t Q i E
R u n t A
Figure 9-12. Receive Frame Pre-processing
Copyright 2007 Cirrus Logic
i s A c c e p t e d i n t o t h e c h i p
a n d t h e F r a m e B o d y
S t a t u s i n R x E v e n t
F r a m e i s p a s s e d
In c o m i n g F r a m e
t o h o s t m e m o r y
b y d e s c r i p t o r
D e s t i n a t i o n
A c c e p t ( A )
p r o c e s s o r
A d d r e s s
M a s k
F i l t e r
i E
M a s k
A c c e p t M a s k
F i l t e r P a s s e d
P A S S E D
Figure
A c c e p t M a s k
P A S S E D
N O T
1/10/100 Mbps Ethernet LAN Controller
9-12.
If t h e f i l t e r i s n o t p a s s e d ,
t h e f r a m e i s d i s c a r d e d .
In t e r r u p t i f M a s k O K
d i s c a r d e d
EP93xx User’s Guide
f r a m e
9-25
9