EiceDRIVERTM SIL
1EDI2004AS
Functional Description
Table 7 EXIT_CMODE request and answer messages
Transfer 1
Transfer 2
Request message
Answer message
1220H
N.a.
N.a.
Va(PSTAT)
2.4.4.5.6 NOP Command
This command triggers no specific action in the driver (equivalent to a “nop”). However, the mechanisms
verifying the validity of the word are active. This command is valid in all operating modes.
Table 8 describes the request message and the corresponding answer message.
Table 8 NOP request and answer messages
Transfer 1
Transfer 2
Request message
Answer message
1410H
N.a.
N.a.
Va(PSTAT)
2.4.4.5.7 READ Command
This command aims at reading the value of the register whose address is specified in the request message.
This command is valid in all operating modes. However, in OPM4 and OPM6, the use of the READ command is
restricted (see Table 37). If an access outside the allowed address range is performed, the access is discarded
as invalid and an SPI error occurs.
Table 9 describes the request message and the corresponding answer message.
Table 9 READ request and answer messages
Transfer 1
Transfer 2
Request message See below
N.a.
Answer message
N.a.
Va(Register)
Request message words
Word 1: ( ADDRESS_5BIT << 7 )] | 002AH | PB.
Answer message words
Word 1: Value of REGISTER.
2.4.4.5.8 WRITEH
This command aims at writing the upper byte of the internal write buffer with the specified value. This
command has no other effect on the functionality of the device. This command is valid in all operating modes.
Table 10 describes the request message and the corresponding answer message.
Data Sheet
29
Rev. 2.0
2019-01-16