GXM datasheet(110/244 Pages) NSC

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Revision 3.1

Integrated Functions (Continued)

SDCLK3MSK

Mask SDCLK3: 0 = Not masked; 1 = Mask.

SDCLK2MSK

Mask SDCLK2: 0 = Not masked; 1 = Mask

SDCLK1MSK

Mask SDCLK1: 0 = Not masked; 1 = Mask.

SDCLK0MSK

Mask SDCLK0: 0 = Not masked; 1 = Mask

5:3

SHFTSDCLK

Shift SDCLK: This function allows shifting SDCLK to meet SDRAM setup and hold time requirements.

The shift function will not take effect until the SDCLKSTRT bit (bit 17 of MC_MEM_CNTRL1) transi-

tions from 0 to 1:

000 = No shift

100 = Shift 2 core clocks

001 = Shift 0.5 core clock

101 = Shift 2.5 core clocks

010 = Shift 1 core clock

110 = Shift 3 core clocks

011 = Shift 1.5 core clock

111 = Reserved

Note: Refer to Figure 4-10 for an example of SDCLK shifting.

2RSVD

Reserved: Set to 0.

1RD

Read Data Phase: Selects if read data is latched one or two core clock after the rising edge of

SDCLK: 0= 1coreclock; 1 = 2 core clocks.

FSTRDMSK

Fast Read Mask: Do not allow core reads to bypass the request FIFO: 0 = Disable; 1 = Enable.

GX_BASE+8408h-840Bh

MC_BANK_CFG (R/W)

Default Value = 41104110h

RSVD

Reserved: Set to 0.

DIMM1_

MOD_BNK

DIMM1 Module Banks: Selects the number of module banks per DIMM for DIMM1:

0 = 1 Module bank

1 = 2 Module banks

RSVD

Reserved: Set to 0.

DIMM1_

COMP_BNK

DIMM1 Component Banks: Selects the number of component banks per module bank for DIMM1:

0 = 2 Component banks

1 = 4 Component banks

RSVD

Reserved: Set to 0.

26:24

DIMM1_SZ

DIMM1 Size: Selects the size of DIMM1:

000 = 4 MB

010 = 16 MB

100 = 64 MB

110 = 256 MB

001 = 8 MB

011 = 32 MB

101 = 128 MB

111 = 512 MB

RSVD

Reserved: Set to 0.

22:20

DIMM1_PG_SZ

DIMM1 Page Size: Selects the page size of DIMM1:

000 = 1 KB

010 = 4 KB

1xx = 16 KB

001 = 2 KB

011 = 8 KB

111 = DIMM1 not installed

When DIMM1 is not installed, program all other DIMM1 fields to 0.

19:15

RSVD

Reserved: Set to 0.

DIMM0_

MOD_BNK

DIMM0 Module Banks: Selects number of module banks per DIMM for DIMM0:

0 = 1 Module bank

1 = 2 Module banks

RSVD

Reserved: Set to 0.

DIMM0_

COMP_BNK

DIMM0 Component Banks: Selects the number of component banks per module bank for DIMM0:

0 = 2 Component banks

1 = 4 Component banks

RSVD

Reserved: Set to 0.

10:8

DIMM0_SZ

DIMM0 Size: Selects the size of DIMM1:

000 = 4 MB

010 = 16 MB

100 = 64 MB

110 = 256 MB

001 = 8 MB

011 = 32 MB

101 = 128 MB

111 = 512 MB

7RSVD

Reserved: Set to 0.

6:4

DIMM0_PG_SZ

DIMM0 Page Size: Selects the page size of DIMM0:

000 = 1 KB

010 = 4 KB

1xx = 16 KB

001 = 2 KB

011 = 8 KB

111 = DIMM0 not installed

When DIMM0 is not installed, program all other DIMM0 fields to 0.

3:0

RSVD

Reserved: Set to 0.

Table 4-16. Memory Controller Registers (Continued)

Bit

Name

Description

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