NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 215

• Manufacturer Part Number: NS7520B-1-I46
• Description: IC ARM MICROPROCESSOR 177BGA
• Manufacturer: Digi International
• Series: NET+ARM®r

Specifications of NS7520B-1-I46

• Applications: Network Processor
• Core Processor: ARM7
• Program Memory Type: External Program Memory
• Controller Series: -
• Ram Size: External
• Interface: EBI/EMI, Ethernet, DMA, SPI, UART
• Number Of I /o: 16
• Voltage - Supply: 1.4 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 177-LFBGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

static void eth_make_has_table (WORD16 *hash_table)
{
address*/
mca_address [index]));
}
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This routine creates a hash table based on the CRC values of
the MAC addresses set up by eth_add_mca(). The CRC value of
each MAC address is calculated and the lower six bits are used
to generate a value between 0 and 64. The corresponding bit in
the 64-bit hash table is then set.
Parameters:
Return Values:
Function: void set_hash_bit (BYTE *table, int bit)
Description:
Parameters:
Return Values:
hash_table
none
int index:
memset (hash_table, 0, 8);
for (index = 0; index < mca_count; index++)
{
}
This routine sets the appropriate bit in the hash table.
table
bit
set_has_bit ((BYTE *) hash_table, calculate_hash_bit
pointer to hash table
position of bit to set
pointer to buffer to store hash table in
w w w . d i g i e m b e d d e d . c o m
/* for each mca
/* clear hash table*/
E t h e r n e t M o d u l e
2 0 3