The best way to get controller info of  Cisco router is by typing the show controller command. see below

test>show controllers bri
BRI unit 0
D Chan Info:
Layer 1 is ACTIVATED
idb 0xBE604, ds 0xCD2C0, reset_mask 0x8
buffer size 1524
[text omitted]
test>
test>show controllers ethernet 
LANCE unit 0, idb 0xB71B0, ds 0xB8900, regaddr = 0x2130000, reset_mask 0x2 
IB at 0x606E64: mode=0x0000, mcfilter 0000/0000/0900/2020 
station address 0010.7b3a.d4af default station address 0010.7b3a.d4af 
buffer size 1524 
[text omitted] 
test> 

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