SRIX4KA3T1GE STMicroelectronics, SRIX4KA3T1GE Datasheet - Page 35

• Manufacturer Part Number: SRIX4KA3T1GE
• Manufacturer: STMicroelectronics

Specifications of SRIX4KA3T1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

SRIX4K
9.7
READ_BLOCK(Addr) command
Command Code = 08h
On receiving the READ_BLOCK command, the SRIX4K reads the desired block and returns
the 4 data Bytes contained in the block. Data Bytes are transmitted with the Least
Significant Byte first and each byte is transmitted with the least significant bit first.
The address byte gives access to the 128 blocks of the SRIX4K (addresses 0 to 127).
READ_BLOCK commands issued with a block address above 127 will not be interpreted
and the SRIX4K will not return any response, except for the System area located at address
255.
The SRIX4K must have received a SELECT() command and be switched to SELECTED
state before any READ_BLOCK() command can be accepted. All READ_BLOCK()
commands sent to the SRIX4K before a SELECT() command is issued are ignored.
Figure 41. READ_BLOCK request format
Request parameter:
Figure 42. READ_BLOCK response format
Response parameters:
Figure 43. READ_BLOCK frame exchange between Reader and SRIX4K
SRIX4K
Reader
SOF
–
–
–
–
–
SOF
S
O
F
ADDRESS: block addresses from 0 to 127, or 255
DATA 1: Less significant data Byte
DATA 2: Data Byte
DATA 3: Data Byte
DATA 4: Most significant data Byte
DATA 1
8 bIts
08h
READ_BLOCK
ADDR
08h
DATA 2
CRC L CRC H
8 bIts
ADDRESS
8 bIts
DATA 3
E
O
F
8 bIts
<-t 0 -><-t 1 ->
S
O
F
8 bits
DATA 4
CRC L
8 bIts
DATA
1
DATA
2
CRC L
DATA
8 bits
CRC H
8 bits
3
DATA
SRIX4K commands
4
CRC L CRC H
CRC H
8 bIts
EOF
AI07684
AI07686b
AI07685
EOF
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O
E
F