|  | { | 
|  | "OBUFTDS_2": { | 
|  | "IOSTANDARD": "DIFF_SSTL135", | 
|  | "IO_LOC_PAIRS": "signal_p:N2,signal_n:N1", | 
|  | "SLEW": "FAST" | 
|  | }, | 
|  | "OBUF_6": { | 
|  | "DRIVE": "12", | 
|  | "IOSTANDARD": "LVCMOS33", | 
|  | "IO_LOC_PAIRS": "led[0]:D10", | 
|  | "SLEW": "SLOW" | 
|  | }, | 
|  | "OBUF_7": { | 
|  | "IN_TERM": "UNTUNED_SPLIT_40", | 
|  | "IOSTANDARD": "SSTL135", | 
|  | "IO_LOC_PAIRS": "led[1]:A9", | 
|  | "SLEW": "FAST" | 
|  | }, | 
|  | "OBUF_OUT": { | 
|  | "IN_TERM": "UNTUNED_SPLIT_50", | 
|  | "IOSTANDARD": "LVCMOS33", | 
|  | "IO_LOC_PAIRS": "out_a:E3", | 
|  | "SLEW": "FAST" | 
|  | }, | 
|  | "bottom_inst.OBUF_10": { | 
|  | "IOSTANDARD": "LVCMOS18", | 
|  | "IO_LOC_PAIRS": "out_b[0]:C2", | 
|  | "SLEW": "SLOW" | 
|  | }, | 
|  | "bottom_inst.OBUF_11": { | 
|  | "DRIVE": "4", | 
|  | "IOSTANDARD": "LVCMOS25", | 
|  | "IO_LOC_PAIRS": "out_b[1]:R2", | 
|  | "SLEW": "FAST" | 
|  | }, | 
|  | "bottom_inst.OBUF_9": { | 
|  | "IOSTANDARD": "DIFF_SSTL135", | 
|  | "IO_LOC_PAIRS": "led[2]:M6", | 
|  | "SLEW": "FAST" | 
|  | }, | 
|  | "bottom_intermediate_inst.OBUF_8": { | 
|  | "DRIVE": "16", | 
|  | "IOSTANDARD": "SSTL135", | 
|  | "IO_LOC_PAIRS": "led[3]:N4", | 
|  | "SLEW": "SLOW" | 
|  | } | 
|  | } |