cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 95

• Manufacturer Part Number: cx82100
• Description: Home Network Processor Hnp
• Manufacturer: Conexant Systems, Inc.

6.7
6.8
6.9
101306C
Read
Write
Throughput
Conexant Proprietary and Confidential Information
No acceleration is provided for read accesses. Multiple memory banks allow multiple
rows to be active simultaneously. This reduces the need for precharge and activate cycles,
allowing a faster aggregate throughput.
A 2-dword buffer is provided to speed up random and DMA write accesses.
Better than 114 MB/s for 16-byte cache-line fills and 177 MB/s for buffered 16-byte
writes. Random read or write single accesses operate at 50 MB/s and 200 MB/s,
respectively. Table 6-5 summarizes the throughput for each access type.
Table 6-5. SDRAM Throughput
Write
Read
Write immediately following Write
Read immediately following Read
Write
Read
Write immediately following Write
Read immediately following Read
CX82100 Home Network Processor Data Sheet
16-bit SDRAM Interface
32-bit Access
16-bit Access
1 dword
1 word
12
12
8
2
7
2
2
2
No. of BCLK Cycles
4 dwords (Seq Burst)
4 words (Seq Burst)
14
15
18
10
11
12
9
8
6-5