Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 170)

170

AT85C51SND3Bx

7632A–MP3–03/06

Reset Value = 0000 0000b

Reset Value = 0001 1110b

Table 189. NFPGCFG / SMPGCFG Registers

NFPGCFG / SMPGCFG – NF / SMC Device Page Configuration Registers

7 6 5 4 3 2 1 0

NDB3 NDB2 NDB1 NDB0 NDB4 - - -

Bit

Number

Bit

Mnemonic

Description

7-3 NDB4:0

Page Data Number

Number of data bytes in a page (unit is 512 bytes).

2-0 -

Reserved

The value read from these bits is always 0. Do not set these bits.

Table 190. SCFG1 Register

SCFG1 – Sub Configuration Register 1

7 6 5 4 3 2 1 0

- NUMDEV1 NUMDEV0 PDEV3 PDEV2 PDEV1 PDEV0 SMCEN

Bit

Number

Bit

Mnemonic

Description

7 -

Reserved

The value read from this bit is always 0. Do not set this bit.

6-5 NUMDEV1:0

Nand Flash Device Number

Write the number of devices connected (SMC/XD included) minus 1.

4-1 PDEV3:0

Protected Device Configuration Bits

Refer to Table 198 for more details.

0 SMCEN

SmartMedia/XD Card Enable Bit

Set to enable SMC support.

Clear to disable SMC support.

Table 191. SCFG2 Register

SCFG2 – Sub Configuration Register 2

7 6 5 4 3 2 1 0

- - - - - - BSIZE1 BSIZE0

Bit

Number

Bit

Mnemonic

Description

7-2 -

Reserved

The value read from these bits is always 0. Do not set these bits.

1 2 ... 165 166 167 168 169 170 171 172 173 174 175 ... 262 263

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