NAND08GAH0A NUMONYX [Numonyx B.V], NAND08GAH0A Datasheet - Page 52

• Manufacturer Part Number: NAND08GAH0A
• Manufacturer: NUMONYX [Numonyx B.V]

Responses
7
7.1
7.2
7.3
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Responses
All responses are sent via the CMD command line. The response transmission always starts
with the left bit of the bit string corresponding to the response code word. The code length
depends on the response type.
A response always starts with a start bit (always ‘0’), followed by the bit indicating the
direction of transmission (device = ‘0’). A value denoted by ‘x’ in the tables below indicates a
variable entry. All responses except for the R3 type (see
CRC. Every command code word is terminated by the end bit (always ‘1’).
There are five response types: R1, R1b, R2, R3, R4.
R1 response (normal response command)
R1 response code length is 48 bits. Bits 45 to 40 indicate the index of the command to be
responded to, this value being interpreted as a binary coded number (between 0 and 63).
The status of the device is coded in 32 bits. See
responses.
Table 28.
R1b response
R1b response is identical to R1, except that it has an additional busy flag sent via the DAT
line as defined in the MultiMediaCard specification.
R2 response (CID, CSD register)
R2 response code length is 136 bits. The content of the CID register is sent as a response
to CMD2, CMD9 and CMD10 commands. Only bits 127 to 1 of the CID and CSD registers
are transferred. The reserved bit (bit 0) of these registers is replaced by the end bit of the
response. See
Table 29.
Bit position
Width (bits)
Description
Bit position
Width (bits)
Description
Value
Value
R1 response
R2 response
Table 29
Start bit
47
‘0’
1
Start bit
135
‘0’
1
for a full description of R2 responses.
Transmission
bit
Transmission bit
‘0’
46
1
134
‘0’
1
Command
[45:40]
index
X
6
Table 28
Reserved
[133:128]
‘111111’
6
NAND08GAH0A, NAND16GAH0D
Section
Device
status
[39:8]
for a full description of R1
32
X
7.4) are protected by a
[127:1]
CRC7
127
x
CRC7
[7:1]
X
7
End bit
End bit
‘1’
0
1
‘1’
1
0