MB97R8110 datasheet(21/63 Pages) RAMXEED

21 / 63 page

DS411-00007-3v1-E

MB97R8110

Area Password for data protection is stored in WordPtr=20h to 3Fh (WordAdr=20h to 3Fh) of RESERVED bank.

As described in Chapter 6, Write command is used for Area Password setting and authentication when the

command accesses to the specific address.



5.1.1 BlockWrite (Optional command)

BlockWrite command format is shown in Table5.1.1. Part of the function are different from what is specified in

EPCglobal C1G2 Ver.1.2.0 as following.

･

MemBank specifies only EPC and USER bank. If BlockWrite command is executed on RESERVED and TID

bank, error code “03h” (indicating Memory overrun) is replied. In this case, the data will not be written into the

specified address.

･

WordCount specifies the number of words to be written. If 00h is specified, the command will be ignored.

When the specified address is located in EPC bank or some address located in WordPtr=00h to 8F7Fh

(WordAdr=000h to 7FFh) of USER bank, WordCount shall be 16(10h) or less. If it is 17(11h) or more, error

code “03h” (indicating Memory overrun) will be replied. When the specified address is located in

WordPtr=9000h to 9D7Fh (WordAdr=800h to EFFh), WordCount shall be specified up to 255(FFh). In this case,

the data up to 16words is to be written into the specified address after CRC verification, but the data over

16words is to be written continuously without CRC verification. Therefore if the communication is terminated

without any response because of low power detection, some data may have been written before the termination.

When the specified address is all or partially locked by the BlockPermalock command or protected by Area

Password, any data will not be written and error code “04h” (indicating Memory locked) is replied.

Table 5.1.1 － BlockWrite command

Command

MemBank

WordPtr

WordCount

Data

CRC

Number of

bits

EBV

WordCount *16

Description

1100 0111

01:EPC

11:USER

Starting

Address

Pointer

Number of

words to

write

Data to be

written

handle

CRC-16

When the address reaches WordPtr=8F7Fh (WordAdr=7FFh) among the range specified by WordCount, the

address to be followed will be WordPtr=9000h (WordAdr=800h).

* In SPI slave communication, the address counter rollovers from WordAdr=7FFh to 000h.



5.1.2 BlockErase (Optional command)

BlockErase command format is shown in Table5.1.2. Parts of the function are different from what is specified in

EPCglobal C1G2 Ver.1.2.0 as described as follows.

・

MemBank specifies only EPC and USER bank. If BlockErase command is executed on RESERVED and TID

bank, error code “03h” (indicating Memory overrun) is replied. In this case, the data will not be erased.

・

WordCount specifies the number of data to be erased. If 00h is specified, the command will be ignored. 01h to

10h shall be specified. When the specified address is all or partially locked by the BlockPermalock command or

protected by Area Password, any data will not be erased and error code “04h” (indicating Memory locked) is

replied.

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