pinno(sc)	name(sc)	EQ_name(bu)	pinno(bu)	EQ_name(w)	pinno(w)
=========================================================================================
1		\HK		HS		5		\HKS		10
2		MODE IN		MODEIN		8		MODE (Vss)	13
3		OSCI		OSCIN		9		XT		7
4		OSCO		OSCOUT		10		\XT		8
5		Vss		Vss		12		Vss		6
6		Vdd		Vdd		11		Vdd		14
7		TONE		DTMF		15		DTMF		12
8		\XMITMUTE	\MFMUTE		16		T/P \MUTE	9	
9		\DP		\DP		18		\DP		11
10		\C1		\COL1		19		C1		1
11		\C2		\COL2		20		C2 		2
12		\C3		\COL3		21		C3		3
13		\R1		\ROW1		1		R1		15		
14		\R2		\ROW2		2		R2		16
15		\R3		\ROW3		3		R3		17
16		\R4		\ROW4		4		R4		18

Extra Pins in BU8307CS

6	67%/60%		(N.A.)
7	MODE OUT	(N.A.)
13	KEYTONE		(N.A. for SC91214A)
14	LH/SH		(N.A.)
17	\DPMUTE		(Not Sure about this)
22	\COL4		(N.A. for SC91214A)