at85c51snd3 ATMEL Corporation, at85c51snd3 Datasheet - Page 183

• Manufacturer Part Number: at85c51snd3
• Description: At85c51snd3 Single-chip Digital Audio Decoder - Encoder With Usb 2.0 Interface
• Manufacturer: ATMEL Corporation

Card Unit
Enable
Card Detect Input
7632D–MP3–01/07
Table 202. ECC ERror Identification Byte
Smartmedia or XD card management is enabled by setting SMCEN bit in SCFG1 regis-
ter as detailed in Section “Configuration Descriptor” where specific configuration must
also be set.
As shown in Figure 82 the SMINS (SMC/XD Card Detect) input implements an internal
pull-up, in order to provide static high level when card is not present in the socket.
SMINS level is reported by SMCD bit
As soon as SMC is enabled, all level modifications on SMINS input from H to L or from L
to H (card insertion or removal) set SMCTI, the SM Card Toggle Interrupt flag in NFINT.
Note:
Figure 82. Card Detection Input Block Diagram
Number
Number
7-0
3-2
1-0
7-6
5-3
2-0
Bit
Bit
7
0
1. SMCD bit is not relevant until SMC management is enabled.
SHERRID1-0
FHERRID1-0
SMINS
Mnemonic Description
Mnemonic Description
SHFB2:0
FHFB2:0
Bit
Bit
0
6
0
-
Reserved
The value read from these bits is always 0.
Second Half Fail Bit Flag
First Half Fail Bit Flag
Reserved
The value read from these bits is always 0.
Second Half Error Id Flag
Id of the error in the second “256-byte” group of the sector.
1: Correctable error.
2: Not correctable error.
3: Not correctable error in the ECC. Anyway, the data is good.
First Half Error Id Flag
Id of the error in the first “256-byte” group of the sector.
1: Correctable error.
2: Not correctable error.
3: Not correctable error in the ECC. Anyway, the data is good.
IOVDD
SHFB2
5
R
PU
NFSTA.7
SMCD
SHFB1
(1)
4
in NFSTA.
SHFB0
3
FHFB2
2
SMCTI
NFINT.4
FHFB1
1
FHFB0
0
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