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ATCA-C110/1G Installation and Use Manual
Chapter 6 Memory Map and Registers
78
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The ATmega64-AMC micro-controller Private I
2
C interface is used for the control of the AMC
Bays and the RTM. The Address Map for the I
2
C devices on the Private I
2
C interface for the
ATmega64-AMC micro-controller is shown below:
Telecom CLK3 Buffer
Enable Signals
(Address: 0x3C)
0 ATCA_CLK3A_EN
Enables the Clock to be sourced to the Backplane on the CLK3A
lines
0 - Disable
1 - Enable
1 ATCA_CLK3B_EN
Enables the Clock to be sourced to the Backplane on the CLK3B
lines
0 - Disable
1 - Enable
2 AMC1_CLK3_EN
Enables the Clock to be sourced to AMC Bay1
0 - Disable
1- Enable
3 AMC2_CLK3_EN
Enables the Clock to be sourced to AMC Bay1
0 - Disable
1 - Enable
4 AMC3_CLK3_EN
Enables the Clock to be sourced to AMC Bay1
0 - Disable
1 - Enable
5 AMC4_CLK3_EN
Enables the Clock to be sourced to AMC Bay1
0 - Disable
1 - Enable
6:7 Unused
Table 6-6. I
2
C to GPIO’s Device Mappings - ATMega8 Private I
2
C Bus
Device Address GPIO
Number
Description