HB288032MM1 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HB288032MM1

MultiMediaCard™ 32 MByte

Hitachi -> Renesas Electronics 

HB288032MM1

• DSR_IMP

Defines if the configurable driver stage option is integrated on the card or not. If implemented a driver

stage register (DSR) must be implemented also.

DSR Implementation

DSR_IMP

0

1

DSR type

no DSR implemented

DSR implemented

The HB288032MM1 output drivers are not configurable. The parameter DSR_IMP is permanently

assigned to the value ‘0’.

• C_SIZE

This parameter is used to compute the card capacity. The memory capacity of the card is computed from

the entries C_SIZE, C_SIZE_MULT and READ_BLK_LEN as follows:

memory capacity = BLOCKNR*BLOCK_LEN

Where

BLOCKNR = (C_SIZE+1)*MULT

MULT = 2C_SIZE_MULT+2 (C_SIZE_MULT < 8)

BLOCK_LEN = 2 , READ_BLK_LEN (READ_BLK_LEN < 12)

Therefore, the maximal capacity which can be coded is 4096*512*512 = 1 GBytes.

Example: A 32 MBytes card with BLOCK_LEN = 512 can be coded with C_SIZE_MULT = 3 and

C_SIZE = 1959.

The card capacity is 32 MBytes.

The value of the parameter C_SIZE used in the formula above for the HB288032MM1 is 0x7A7.

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