W90P710_05 Datasheet, PDF (76/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
BITS
[31:19]
[18:16]
[15]
[14]
[13]
[12:11]
[10:8]
[7]
[6:5]
BASADDR
RESERVED
MRSET
RESERVED
AUTOPR
LATENCY
RESERVED
COMPBK
DBWD
DESCRIPTION
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.
-
SDRAM Mode register set command for SDRAM bank 0/1
This bit set will issue a mode register set command to SDRAM.
-
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
The CAS Latency of SDRAM bank 0/1
Defines the CAS latency of external SDRAM bank 0/1
LATENCY [12:11]
MCLK
0
0
1
0
1
2
1
0
3
1
1
REVERSED
-
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
Data bus width for SDRAM bank 0/1
Indicates the external data bus width connect with SDRAM bank 0/1
If DBWD = 00, the assigned SDRAM access signal is not generated
i.e. disable.
DBWD [6:5]
Bits
0
0
Bank disable
0
1
8-bit (byte)
1
0
16-bit (half-word)
1
1
32-bit (word)
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