STR720 datasheet(112/401 Pages) STMICROELECTRONICS

Part #	STR720

Description	ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES

PDF	401 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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112 / 401 page

STR720 - DRAM CONTROLLER (DRAMC)

112/401

Size of bank 2 Register (Bank2Size)

Address Offset: 38h

Reset value: 0000h

The Size of bank 2 Register (Bank2Size) is a 16-bit read/write control register used to specify

the size of external region 2 (Bank 2).

The Bank2Size control bits are the same as Bank1Size register.

Size of bank 3 Register (Bank3Size)

Address Offset: 3Ch

Reset value: 0000h

The Size of bank 3 Register (Bank3Size) is a 16-bit read/write control register used to specify

the size of external region 3 (Bank 3).

The Bank3Size control bits are the same as Bank1Size register.

...

0.0001.1111

32 x 64kBytes = 2MBytes

...

0.0011.1111

64 x 64kBytes = 4MBytes

...

0.0111.1111

128 x 64kBytes = 8MBytes

...

0.1111.1111

256 x 64kBytes = 16MBytes

...

1.1111.1111

512 x 64kBytes = 32MBytes

6543210

reserved

SIZE[8:0]

6543210

reserved

SIZE[8:0]

Table 29. Size field and the corresponding actual size

SIZE field

Bank actual size

STR720 Datasheet(PDF) 112 Page - STMicroelectronics