MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 358

• 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

Synchronous DRAM Controller Module
18.4
This example interfaces a 512K x 32-bit x 4 bank SDRAM component to a MCF5235 operating
at 40 MHz bus speed (80 MHz core).
18.4.1 SDRAM Interface Configuration
To interface this component to the MCF5235 DRAM controller, use the connection table that
corresponds to a 32-bit port size with 8 columns
when the part is functional.
18-20
SDRAM Example
Speed grade (-8E)
10 rows, 8 columns
Two bank-select lines to access four internal banks
ACTV
Period between auto-refresh and
ACTV
Precharge command to
Last data input to
Auto-refresh period for 4096 rows (t
-to-read/write delay (t
command to precharge command (t
Figure 18-10. Mode Register Set (
Table 18-25. SDRAM Example Specifications
SD_CS[1] or [0]
Table 18-26
PALL
SD_SCAS
SD_SRAS,
CLKOUT
SD_WE
D[31:0]
A[31:0]
command (t
Parameter
ACTV
MCF5235 Reference Manual, Rev. 2
RCD
command (t
)
Table 18-25
ACTV
shows the proper hardware connections.
RWL
REF
)
command (t
)
RAS
RP
)
(Table
MRS
)
lists design specifications for this example.
RC
)
18-24). Two pins select one of four banks
MRS
40 MHz (25-ns period)
20 ns (min.)
70 ns
48 ns (min.)
20 ns (min.)
1 bus clock (25 ns)
64 mS
) Command
Specification
Freescale Semiconductor