BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 320

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note 1: Valid data that use the DMAC and ECC cannot be read continuously. After valid data has been read, data
Note 2: Immediately after ECC is read from the NAND-Flash memory, accesses (read/write) to the NAND-Flash
control activation of the NDWEn pin. This is a protective register to prevent the
NDWEn pin from being activated inadvertently for the NAND-Flash memory.
Reed-Solomon codes. These pins are used to control the pins of the NAND-Flash
memory.
<ECCRST>), this bit must have been enabled (1).
transfer should be stopped once to change the <RSECGW> bit from 0 to 1 before ECC is read.
memory or error bit calculation cannot be performed for a duration of 20 system clocks that is used for internal
processing. Wait processing or other by software is needed.
generated from the ECC for written data and the ECC for read data Writing 1 to
<RSESTA> starts this calculation.
are used, this bit should be set to 0.
reading the valid data part and reading the ECC should be managed separately by
software.
To read the ECC written in the redundant area of the NAND-Flash, set <RSECGW> to
1 (Enable).
c. <RSESTA>
d. <RSECGW>
e. <WE>
f. <ALE>, <CLE>, <CE0>, <CE1>
g. <ECCE>
The <WE> bit is used for both Hamming and Reed-Solomon codes. This bit is used to
The <ALE>, <CLE>, <CE0> and <CE1> bits are used for both Hamming and
The <ECCE> bit is used for both Hamming and Reed-Solomon codes.
This bit is used to control the ECC circuit. To reset the ECC (to write 1 to
The <RSESTA> bit is used only for Reed-Solomon codes.
The error address and error bit position are calculated using an intermediate code
The <RSECGW> bit is used only for Reed-Solomon codes. When Hamming codes
Since the valid data part and the ECC are processed differently in this circuit,
To read valid data from the NAND-Flash memory, set <RSECGW> to 0 (Disable).
TENTATIVE
TMPA900CM- 319
TMPA900CM
2009-10-14