LG Electronics U250 service manual MSM6245 Codec pins, Audio part schematics

3. TECHNICAL BRIEF

MSM6245 CODEC pins

				RCV- RCV+
36
R202		HPH R
220n	220n		HPH L	C200
				C201
C202	C203
				MICBIAS
	LINE N	LINE P

AC18 AC17 AA17 W17 AE18 AF18 T15 AA18 AA19 AC22

47p

47p

C204

10p

AC21 AC19 AC20 AF19

AUDIO

Near to MSM

MIC2N MIC2P MIC1N MIC1P

	22n	22n
AE19	C210	C211		AE20	AA20
	AF21	AF22	AF20

C212

0.1u

10%

Place near

MSM pin W18

(CODEC VSS)

LINE_ON LINE_OP HPH_R HPH_L EAR1ON EAR1OP MICBIAS AUXOUT HPH_VREF LINE_L_IP LINE_L_IN

LINE_R_IP

LINE_R_IN

AUXIN AUXIP MIC2N MIC2P MIC1N MIC1P CCOMP F25

SDCC_DAT1_GPIO99 M25 SDCC_DAT2_GPIO100 M26

Figure 1.25 Audio part schematics

VREG_MSMP_2.7V

	C400
		0.1u
	5
				4	VIN-
	1
HOOK_KEY				VCC
			OUT	GND 3	VIN+
	2

U400

NCS2200SQ2T2G

	R401
	5.1K
R402
1M	10K
	R404
100K	MIC2N
R405	MIC2P
	HPH_L

HPH_R

USB_D+

USB_D-

EAR_SENSE_N

2.2K	I/O CONNECTOR
R400	MICBIAS

R403
VREG_MSMP_2.7V					CN401
51K					HSEJ-18S04-25R
					21
					191
					2
	C401	33u	R406	100ohm	3
					4
C402	33u	R407	100ohm		5
					6
					7
					8
					9

Figure 1.26 Audio part schematics

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