FEDL7204-001DIGEST-01
OKI Semiconductor
ML7204-001
Configuration Example 6 (Three-Way Calling: Terminal Side [Three Parties])
PCM_TXEN1
GSX]1
AIN1N
TXGAIN_PCM1
RX_SIG
TXDETB
10kΩ
PCM I/F
Encoder
G.711
A/D1
BPF
LPEN0
TXGAINB
CODECB_TXEN
AMP1
P/S
PCMO
TXGAIN_PCM0 PCM_TXEN0
SYNC
BCLK
Linear PCM
Codec (CODEC_B)
TS
CONT
PCM Codec
STGAINB
CLKSEL
RXGAIN_ITS1
Decoder
G.711
10kΩ
PCMI
RXGAINB
S/P
CODECB_RXEN
LPEN1
D/A1
A/D0
LPF
BPF
VFRO1
AMP3
RXGENB
RXGAIN_ITS2
RXGAIN_PCM0
PCM_RXEN0
TXGEN
RXGAIN_PCM1
PCM_RXEN1
GSX0
AIN0N
AIN0P
ACK1B/
GPIOA[5]
ACK0B/
GPIOA[4]
TXDETA
10kΩ
TXGAIN_SC
G.729.A
TX
CH1
Buffer0
T
TXGAIN
_CH1
SC_TXEN
S
TXGAINA
STGAINA
CODECA_TXEN
Sin
Encoder
G.711
AMP
Sout
GPAD
LPAD
+
Center
W
TX
Buffer1
FR1B
FR0B
WRB
RDB
Clip
CH2
-
ATTs
DC_EN
TXGAIN
_CH2
RX2TX1
_GAIN
Speech Codec
Linear PCM
Codec (CODEC_A)
Echo Canceller
Bus Control
Unit
AFF
RX1TX2
_GAIN
CSB
D0-D15
A0-A7
10kΩ
16b
8b
RXGAIN
G.729.A
RX
Buffer0
Rout
Rin
RXGAINA
RXGAIN_SC
SC_RXEN
ATTr
_CH1
T
S
W
D/A0
LPF
VFRO0
AVREF
Decoder
G.711
CH1
CODECA_RXEN
RXGENA
RXGAIN
_CH2
RX
Buffer1
AMP
RXGEN
RXDET
RX_SIG
CH2
DC_EN
VREF
Frame/DMA
Controller
TIMER
TIMOVF
Generator path
TGEN1_EXFLAG
TONE_GEN1
(TONE C/ D)
TGEN0_EXFLAG
Detector path setting
GPIO2
TXDETA
FDET_RQ
DPGEN
DPDET
DVDD2
DVDD1
FSK_DET
FDET_FER/FDET_OER
TXGEN
Control
Register
TXDETB
FDET_D[7:0]
GPIO0
DTMF_DET
RXGENA_EN
RXGENB_EN
DTMF_REC
DVDD0
DGND2
DGND1
DGND0
RXGENA
RXGENB
DP_DET
DTMF_DET
DTMF_CODE[3:0]
TONE0_DET
TONE1_DET
DP_DET
DTMF_CODE[3:0]
TONE_GEN0
(TONE A/ B)
TONE_DET0
TONE_DET1
TONE0_DET
TONE1_DET
MCK
POWER
FGEN_FLAG
RXGEN
CKGN
PLL
SYNC (8 kHz)
INT
FSK_GEN
INTB/
GPIOA[6]
AGND
AVDD
RXDET
FDET_RQ
FDET_FER/FDET_OER
OSC
12.288 MHz
FGEN_FLAG
TIMOVF
VREGOUT
VGB
Unused
8
6
4
This example shows the configuration for making three-way calling between analog telephones (A-TEL1,
A-TEL2, and A-TEL3) on the equipment with multiple analog telephone interface ports.
ML7204
ML7204
ML7204
(configuration example 6)
(configuration example 6)
(configuration example 6)
I/F
A-TEL3
A-TEL2
A-TEL1
35/42