
PLL/DLL Clock Generators ACX_CLKGEN
Speedster Macro Cell Library
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Figure 9-3: Serial Control Bus Read Operation
Figure 9-4: Serial Control Bus Write Operation
Control Status Registers (CSR) Register Description
Table 9-4: Control Status Registers (CSR) Description
{A16,A15}
ick_dspll_sif_clk
ick_sbus_req
ick_sbus_data[1:0] {A0,1’b0} {A2,A1} {A4,A3}
ock_sbus_ack
ock_sbus_data[1:0]
{D1,D0} {D3,D2} {D31,D30}{D29,D28}
{A16,A15}
ick_dspll_sif_clk
ick_sbus_req
ick_sbus_data[1:0] {A0,1’b1} {A2,A1}
ock_sbus_ack
{D1,D0} {D3,D2} {D31,D30}
CSR NAME Addr. Bit Type Initial Value Description
CSR_ADDR_USER_RESERVE_00 8’h00 0 in/out Reserved Not Used
1 in/out Reserved Not Used
2 in/out Reserved Not Used
3 in/out Reserved Not Used
4 in/out Reserved Not Used
5 in/out Reserved Not Used
6 in/out Reserved Not Used
7 in/out Reserved Not Used
CSR_ADDR_SYNTHOUT0 8’h01 0 in/out outdiv0[0] Clkout[0] Output Divider Divisor bit 0
1 in/out outdiv0[1] Clkout[0] Output Divider Divisor bit 1
2 in/out outdiv0[2] Clkout[0] Output Divider Divisor bit 2
3 in/out outdiv0[3] Clkout[0] Output Divider Divisor bit 3
4 in/out outdiv0[4] Clkout[0] Output Divider Divisor bit 4
5 in/out outdiv0[5] Clkout[0] Output Divider Divisor bit 5
6 in/out phase_inc[0] Increments phase of synthesizer clock out-
put by 1/8th of1 period on rising transition
7 in/out clken_out0 Enable for Clkout[0] Output Synthesizer
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