DS33Z11+ Maxim Integrated Products, DS33Z11+ Datasheet - Page 82

• Manufacturer Part Number: DS33Z11+
• Description: IC MAPPER ETHERNET 169-CSBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS33Z11+

• Applications: Data Transport
• Interface: SPI/Parallel
• Voltage - Supply: 1.8V, 3.3V
• Package / Case: 169-CSBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Name:
Register Description
Register Address:
Bits 0 - 7: SDRAM Refresh Time Control (SREFT0 – SREFT7) These 8 bits are used to control the SDRAM
refresh frequency. The refresh rate will be equal to this register value x 8 x 100 Mhz.
Note: This register has a non-zero default value. This should be taken into consideration when initializing
the device.
Note: After changing the value of this register, the user must toggle the GL.SDMODEWS.SDMW bit to
write the new values to the SDRAM.
Bit #
Name
Default
SREFT7
7
0
SREFT6
6
1
GL.SDRFTC
Global SDRAM Refresh Time Control
3Dh
SREFT5
5
0
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SREFT4
4
0
SREFT3
3
0
SREFT2
2
1
SREFT1
1
1
SREFT0
0
0