4 common board registers, Common board registers - 10, Opcodes and commands - 10 – Kontron CP371 User Manual
Page 54: Rom status register bit map - 10, Rom data register bit map - 10, Hardware debug register bit map - 10, Configuration cp371
Configuration
CP371
Page 4 - 10
© 2002 PEP Modular Computers GmbH
ID 23762, Rev. 02
Note: The EWEN (Erase and Write enable) command must be executed once before the first
write.
Note: As soon as the Startbit is set the Busy/Ready bit becomes active (Busy=1). It remains set
as long as the command is executed and is reset when command execution is complete.
4.3.4
Common Board Registers
These registers are for internal test and debug only. The Common Status Register contains
Logic- Version and PCB- Version. The Common Control Register is a read/write register with-
out any further functionality. Neither of these should be used by standard software.
Table 4-7: Opcodes and Commands
OPCODE
A8 … A0
COMMAND
00
11xxxxxxx
EWEN
10
xxxxxxxxx
READ
01
xxxxxxxxx
WRITE
Table 4-8: ROM Status Register Bit Map
BITS
TYPE
DEFAULT
FUNCTION
31
R/W
0
Busy
30 - 0
R/W
00
reserved
Table 4-9: ROM Data Register Bit Map
BITS
TYPE
DEFAULT
FUNCTION
31-8
R/W
0
reserved
7-0
R/W
0
Data (for data read and write commands)
Table 4-10: Hardware Debug Register Bit Map
BITS
TYPE
DEFAULT
FUNCTION
31-0
R/W
0
reserved