Digi NS7520 manual X8 Sdram configurations, X8 Sdram interconnect, Bclk CLK VCC CKE, Dqm

		M e m o r y C o n t r o l l e r M o d u l e
NS7520 signal	16M SDRAM signal	64M SDRAM signal
A22		BA1
BCLK	CLK	CLK
VCC	CKE	CKE
D31-D16	D15-D00	D15-D00

Table 43: x16 SDRAM interconnect

x8 SDRAM configurations

Table 44 identifies the interconnect between the NS7520 and SDRAM when SDRAM is used in an x8 configuration. An x8 SDRAM configuration typically is constructed using one x8 SDRAM component.

NS7520 signal	16M SDRAM signal	64M SDRAM signal
CS/RAS_	CS[4:0]_	CS[4:0]_
CAS3_	RAS_	RAS_
CAS2_	CAS_	CAS_
CAS1_	WE_	WE_
CAS0_	A10/AP	A10/AP
BE3_	DQM_	DQM_
BE2_	N/A	N/A
BE1_	N/A	N/A
BE0_	N/A	N/A
A0	A0	A0
A1	A1	A1
A2	A2	A2

Table 44: x8 SDRAM interconnect

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