ATAES132-TH-EQ Atmel, ATAES132-TH-EQ Datasheet - Page 44

• Manufacturer Part Number: ATAES132-TH-EQ
• Description: EEPROM AES 32Kbit EE SPI
• Manufacturer: Atmel

Specifications of ATAES132-TH-EQ

• Rohs: yes
• Maximum Clock Frequency: 10 MHz
• Operating Supply Voltage: 6 V
• Maximum Operating Temperature: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-8
• Interface Type: SPI
• Factory Pack Quantity: 2300

7.12.
Info Command
The Info command reads various information about the device from internal registers. Param1 selects the information to read.
Operation of this command does not require knowledge of any secrets.
Table 7-42. Coding of the selector field (Param1)
Table 7-43. Input parameters
Table 7-44. Output parameters
The command and response packet is transmitted as a block beginning with the count and ending with a packet checksum.
This block format is described in Section 6.1.
Selector
0x0000
0x0005
0x0006
0x000C
All Other
Opcode
Mode
Param1
Param2
Data
Name
ReturnCode
Result
Name
Info
Mode
Selector
Zero
-
(Bytes)
Name
MacCount
AuthStatus
DeviceNum
ChipState
Reserved
Size
1
2
Notes
Upon success, 0x00 will be returned. Any command execution or validation failure generates
a non-zero error code, per Section 6.3.
Current value of the register
(Bytes)
Size
1
1
2
2
0
Description
Read the MacCount register. The first byte is always 0x00; the second byte
is the MacCount value.
Read the authentication status register. Returns 0xFFFF to indicate that the
AuthComplete status flag = NoAuth. If the AuthComplete status flag =
YesAuth, then the info returns the AKeyID as 0x00KK, where KK is the
authentication KeyID.
Read the DeviceNum register. The first byte is the Atmel device code which
is unique to this Atmel catalog number. The second byte provides the device
revision number.
See Table 7-29 for DeviceNum codes
Read the ChipState device state register:
Reserved for future use
Notes
0x0C
Must be 0x00
Selects the register to read
Always 0x0000
See Section L.3 for a detailed description of ChipState
0x0000 indicates the ChipState = Active
0xFFFF indicates the ChipState = Power Up
0x5555 indicates the ChipState = "Wakeup from Sleep"
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
44