CS98000-CQ Cirrus Logic, Inc., CS98000-CQ Datasheet - Page 5
CS98000-CQ
Manufacturer Part Number
CS98000-CQ
Description
Internet DVD (iDVD) Chip Solution
Manufacturer
Cirrus Logic, Inc.
Datasheet
1.CS98000-CQ.pdf
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1.1.2
CS98000 interfaces with either SDRAM or SGRAM for high data bandwidth transfer. Figure 2 shows the
refresh cycle performed by CS98000. Figure 3 shows a burst read (length = 8) transaction, while Figure 4
shows a burst write (length = 8) transaction. Figure 5 and the following table show detailed timing. In both
Figure 3 and 4, CAS latency is programmed to 3.
DS525PP1
SDRAM Interface
M_DQM_[3:0]
M_DQM_[3:0]
M_D_[31:0]
M_A_[11:0]
M_D_[31:0]
M_A_[11:0]
M_DQM_[3:0]
M_RAS_L
M_CAS_L
M_RAS_L
M_CAS_L
M_WE_L
M_WE_L
M_BS_L
M_BS_L
M_A_[11:0]
M_CKO
M_CKO
M_RAS_L
M_CAS_L
M_WE_L
M_AP
M_AP
MD[31:0]
M_BS_L
M_CKE
M_AP
Figure 3. SDRAM Burst Write Transaction
Figure 4. SDRAM Burst Read Transaction
Figure 2. SDRAM Refresh Transaction
R0
R0
C0
C0
C1 C2 C3 C4 C5 C6 C7
D0
C1
D1
D0 D1 D2 D3
C2
D2
C3
D3
C4
D4
D4 D5 D6 D7
D5
C5
D6
C6
D7
C7
CS98000
5
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