W90N740CD WINBOND [Winbond], W90N740CD Datasheet - Page 48

• Manufacturer Part Number: W90N740CD
• Description: 32-Bit ARM7TDMI-Based Micro-Controller
• Manufacturer: WINBOND [Winbond]

BASADDR [31:19] ：Base address pointer of SDRAM bank 0/1
The start address is calculated as SDRAM bank 0/1 base pointer << 18. The SDRAM base address
pointer together with the “SIZE” bits constitutes the whole address range of each SDRAM bank.
MRSET [15] ：SDRAM Mode register set command for SDRAM bank 0/1
This bit set will issue a mode register set command to SDRAM.
AUTOPR [13] ：Auto pre-charge mode of SDRAM for SDRAM bank 0/1
Enable the auto pre-charge function of external SDRAM bank 0/1
0 = Auto pre-charge
1 = No auto pre-charge
LATENCY [12:11] ：The CAS Latency of SDRAM bank 0/1
Defines the CAS latency of external SDRAM bank 0/1
COMPBK [7] ： Number of component bank in SDRAM bank 0/1
Indicates the number of component bank (2 or 4 banks) in external SDRAM bank 0/1.
0 = 2 banks
1 = 4 banks
COMPBK
MRSET
31
23
15
7
0
0
1
1
RESERVED
LATENCY [12:11]
30
22
14
6
DBWD
BASADDR
AUTOPR
29
21
13
5
0
1
0
1
28
20
12
BASADDR
4
LATENCY
COLUMN
- 45 -
W90N740CD/W90N740CDG
27
19
11
3
Publication Release Date: September. 19, 2005
26
18
10
2
REVERSED
MCLK
1
2
3
RESERVED
RESERVED
SIZE
25
17
9
1
Revision A7
24
16
8
0