Motorola MCS 2000 Service Instructions Manual page 186

Chapter 10: Digrams and Parts Lists
CLK
2.1MHz
SPI_TX_DATA
ASFIC_SEL
PWR_RST
AUX_TX_IN1
AUX_TX_IN2
AUX_TX_IN3
AUX_RX_IN1
AUX_RX_IN2
AUX_RX_IN3
SQUELCH_IN
CTRL_HD2:KEY_FAIL
MIC_IN
MIC_VOLTAGE
EXT_MIC_IN
PL_TX
TX_DATA
LG_DTMF
RSSI
DISC
Figure 10-24. Controller, Audio Blocks Diagram
68P81083C20-D
ASFIC_BLOCK
CLK
2.1MHZ
SPI_TX_DATA
ASFIC_SEL
PWR_RST
RX_HI&FIL_AUD_OUT
AUX_TX_IN1 RX_HI
AUX_TX_IN2
AUX_TX_IN3 1200
AUX_RX_IN1 UP_CLK
AUX_RX_IN2 PL_RX
AUX_RX_IN3 RX_DATA
RX_AUDIO
SQUELCH_IN ASFIC_PRE-EMP_OUT
CTRL_HD2:KEY_FAIL CH_ACT
MIC_IN SQ_DET
MIC_VOLTAGE VOX
EXT_MIC_IN UNIV_IO
PL_TX AUDIO_MOD
TX_DATA
LG_DTMF
COMP_EN
EXP_FILTERED_AUD FF_EN
EXP_AUDIO HI_CLMP_EN
RX_IN HCI_DIS
TX_IN LC_DIS
RSSI FILTERED_AUDIO
DISC ASFIC_MIC_AUD_OUT
SEE SCHEMATIC FOR DETAIL
HEAR_CLEAR_BLOCK
COMP_EN
FF_EN
HI_CLMP_EN
HCI_DIS RSSI_3
LC_DIS
FILTERED_AUDIO EXP_FILTERED_AUDIO
ASFIC_MIC_AUD_OUT EXP_AUDIO
RX_IN
RSSI TX_IN
DISC
SEE SCHEMATIC FOR DETAIL
10-38
RX_HI&FIL_AUD_OUT
RX_HI
1200
UP_CLK
PL_RX
RX_DATA
RX_AUDIO
ASFIC_PRE-AMP_OUT
CH_ACT
SQ_DET
VOX
UNIV_IO
AUDIO_MOD
RSSI_3
ASFIC_MIC_AUDIO_OUT
MAEPF-28099-O
December 6, 2004