DS33R41+ Maxim Integrated Products, DS33R41+ Datasheet - Page 142

• Manufacturer Part Number: DS33R41+
• Description: IC TXRX ETHERNET MAP 400-BGA
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of DS33R41+

• Number Of Drivers/receivers: 4/4
• Protocol: T1/E1/J1
• Voltage - Supply: 3.14 V ~ 3.47 V
• Mounting Type: Surface Mount
• Package / Case: 400-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Name:
Register Description
Register Address:
Bits 7 to 0: SDRAM Refresh Time Control (SREFT7 to SREFT0). These 8 bits are used to control the SDRAM
refresh frequency. The refresh rate will be equal to this register value x 8 x 100MHz.
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
142 of 335
SREFT4
4
0
SREFT3
3
0
SREFT2
2
1
SREFT1
1
1
SREFT0
0
0