SMM105
Preliminary Information
I2C PROGRAMMING INFORMATION (CONTINUED)
CONFIGURATION REGISTERS
COMMAND AND STATUS REGISTERS
The majority of the configuration registers are grouped
with the general-purpose memory. Writing and reading
the configuration registers is shown in Figures 10, 11
and 12.
Note: Configuration writes or reads of registers 00HEX
to 03HEX should not be performed while the SMM105
is margining.
Writes and reads of the command and status registers
are shown in Figures 16 and 17.
GRAPHICAL USER INTERFACE (GUI)
Device configuration utilizing the Windows based
SMM105 graphical user interface (GUI) is highly
recommended. The software is available from the
Summit website (www.summitmicro.com). Using the
GUI in conjunction with this datasheet and Application
Note 38, simplifies the process of device prototyping
and the interaction of the various functional blocks. A
programming Dongle (SMX3200) is available from
Summit to communicate with the SMM105. The
Dongle connects directly to the parallel port of a PC
and programs the device through a cable using the I2C
bus protocol. See figure 8 and the SMX3200 Data
Sheet.
GENERAL-PURPOSE MEMORY
The 1k-bit general-purpose memory is located at any
slave address. The bus address bits are hard wired
by the address pins A2, A1 and A0. Memory writes
and reads are shown in Figures 13, 14 and 15.
Slave Address Bus Address Register Type
Configuration Registers are located in
00 HEX thru 45HEX
ANY
A2 A1 A0
General-Purpose Memory is located in
80 HEX thru FFHEX
Table 1 - Address bytes used by the SMM105.
Summit Microelectronics, Inc
2068 1.8 09/20/05
14
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
