Motorola HT1250-LS+ Service Manual page 96

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5
VS_AUDSEL
FLAT_RX_SND
RX_AUD_RTN
TX_AUD_SND
TX_AUD_RTN
FLAT_TX_RTN
INT_EXT_Vdd
KEYPAD_ROW
KEYPAD_COL
OFF_BATT_DATA_OUT
VS_GAINSEL
Figure 5-32. 700 MHz Keypad/PassPort Board Interface Schematic Diagram
R481
24K
EXT_MIC
VS_CS
SWB+
E400
Vddd
C467
C481 0.1uF
0.1uF
R482
0
OPT_ENA
RDY
URX_SND
PTT
KEY_INT
VS_INT
RESET
LEDBL
MISO
DATA
R_W
LCD_SEL
D0
D1
D2
D3
D4
D5
D6
D7
A0
CLK
VS_RAC
C463
100pF
C466 C458 C459
100pF 100pF 100pF
C537 C536
100pF 100pF
E401
E402
E403
E404
E405
E406
E407
E408
E409
C532 C533 C534
100pF 100pF 100pF
C404
100pF
J400
40-PIN CONNECTOR
J400-40 EXT_MIC
J400-39
VS_CS
J400-38
SW_B+
J400-37
Vddd
J400-36 VS_AUDSEL
J400-35
Det_Aud_Snd
J400-34
Rx_Aud_Rtn
J400-33 Tx_Aud_Snd
J400-32
Tx_Aud_Rtn
J400-31
Flat_Tx_Rtn
Opt_Bd_En
J400-30
J400-29
Rdy/Req
J400-28
Rx_Aud_Snd
J400-27 ON
J400-26
INT_EXT_Vdd
J400-25
Key_Row
J400-24
Key_Col
J400-23
PTT
J400-22
Key_Intrp
J400-21
VS_INT
J400-20
RST*
J400-19 LED_EN
J400-18
OFF_BATT_DATA_OUT
J400-17
VS_GAINSEL
J400-16
SrD_Rtn
J400-15
SrD_Snd
J400-14
R/W*
J400-13 CS*
J400-12
DB0
J400-11
DB1
J400-10
DB2
J400-9
DB3
J400-8
DB4
J400-7
DB5
J400-6 DB6
J400-5 DB7
J400-4
A0
J400-3
SCK_Snd
J400-2
VS_RAC
J400-1
Gnd
C535
100pF
Schematic Diagrams, Overlays, and Parts Lists