IDT CPS Registers
Revision 1.5
Integrated Device Technology, Inc.
CPS-16/12/8 User Manual
10 - 36
July 10, 2012
10.9.11 I2C Master Control (I2C_MASTER_CTRL)
Table 10.54 I2C_MASTER_CTRL 0xF20050
Bit
Field Name
Type
Reset Value
Comment
9 - 0
EPROM_SLAVE_ADDR
R/W
0b0001010[ID2][ID1][ID0]
I2C address to use for the
EPROM for commanded
master mode
10
Reserved
11
CHKSUM_DISABLE
R/W
0b0
0 = Verify checksum with
EPROM read
1 = Do not verify checksum
with EPROM read
15 - 12
Reserved
22 - 16
CLK_DIVISOR
R/W
0x62
Value used to convert inter-
nal Sys_Clks to I2C clocks
and derive internal timing
parameters. This value
must be set such that the
equation SYS_CLK/
CLK_DIVISOR = 32 MHz.
The maximum value under-
stood by the device is 0x62
such that if this value is pro-
grammed to >0x62 the
value of 0x62 will be used.
The minimum value for this
parameter understood by
the device is 0x31. Note
that SYS_CLK can vary
between 75 MHz and 156
MHz.
24 - 23
Reserved
25
MASTER_FREQ_SEL
R/W
0b0
0 = 400 KHz
1 = 100KHz
31 - 26
Reserved