DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver

Register Name:

 

 

GL.BISTPF

 

 

 

 

 

Register Description:

 

BIST Pass-Fail

 

 

 

 

 

Register Address:

 

21h

 

 

 

 

 

Bit #

7

6

5

 

4

3

2

1

0

Name

 

-

-

 

-

 

-

-

-

BISTDN

BISTPF

Default

 

0

0

 

0

 

0

0

0

0

0

Bit 1: BIST DONE (BISTDN) If this bit is set to 1, the DS33R11 has completed the BIST Test initiated by BISTE. The pass fail result is available in BISTPF.

Bit 0: BIST Pass-Fail (BISTPF) This bit is equal to 0 after the DS33R11 performs BIST testing on the SDRAM and the test passes. This bit is set to 1 if the test failed. This bit is valid only after the BIST test is complete and the BIST DN bit is set. If set this bit can only be cleared by resetting the DS33R11.

Register Name:

 

 

GL.SDMODE1

 

 

Register Description:

 

Global SDRAM Mode Register 1

Register Address:

 

3Ah

 

 

Bit #

7

6

5

4

3

Name

 

-

-

 

-

-

WT

Default

 

0

0

 

0

0

0

2

1

0

BL2

BL1

BL0

0

1

1

Bit 3: Wrap Type (WT) This bit is used to configure the wrap mode.

0 = Sequential

1 = Interleave

Bits 0- 2: Burst Length 0 through 2 (BL0 – BL2) These bits are used to determine the Burst Length.

Note: This register has a nonzero 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.

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Maxim DS33R11 specifications Gl.Bistpf, GL.SDMODE1