201
2-
11
42
Commands
enhanced buffered read words (ER)
Command:
Response:
The R/W head makes attempts until successful, to read <WordNum> 32-bit words
from the address <WordAddr>. Only modified data is transferred via the interface.
When a read/write tag leaves the detection range, the status '05h' (read
command) is output.
Byte
Content
Bit no.
7
6
5
4
3
2
1
0
Byte 0
Control byte
0
0
0
0
0
D
S
U
M
U
S
Byte 1
Reserved
0
0
0
0
0
0
0
0
Byte 2
Command code
- 19
h
0
0
0
1
1
0
0
1
Byte 3
Reserved
0
0
0
0
0
0
0
0
Byte 4
Word address
<WordAddr> (high byte)
Byte 5
Word address
<WordAddr> (low byte)
Byte 6
Word count
<WordNum> (high byte)
Byte 7
Word count
<WordNum> (low byte)
Byte
Content
Bit no.
7
6
5
4
3
2
1
0
Byte 0
Control byte
0
0
0
0
0
D
S
U
M
U
S
Byte 1
Reserved
0
0
0
0
0
0
0
0
Byte 2
Command code
- 19
h
0
0
0
1
1
0
0
1
Byte 3
Reserved
0
0
0
0
0
0
0
0
Byte 5
Status
<Status>
Byte 5
Reply counter
<ReplyCounter>
Byte 6
Word count
<WordNum> high byte
Byte 7
Word count
<WordNum> (low byte)
Byte 8
Data 00h ... FF
h
<Data>
...
Data 00h ... FF
h
<Data>
Byte N
1)
Data 00h ... FF
h
<Data>
Table 7.6
1) N = 4 x <WordNum> + 7