GSX1
TXGAIN_PCM1 PCM_TXEN1
RX_SIG
Encoder
G.711
P/S
TXGAIN
_PCM0
SYNC
PCM Codec
BCLK
CLKSEL
TS CONT
PCM_TXEN0
PCMO
PCM I/F
LPEN0
CODECB_TXEN
10kΩ
TXDETB
AIN1N
A/D1
BPF
AMP1
TXGAINB
OKI Semiconductor
Linear PCM
Codec
(CODEC_B)
RXGAIN_ITS1
Decoder
S/P
CODECB_RXEN
BLOCK DIAGRAM
STGAINB
10kΩ
RXGAINB
VFRO1
RXGAIN_PCM0
RXGAIN_PCM1
PCM_RXEN1
PCM RXEN0
TXGEN
D/A1
RXGAIN_ITS2
LPF
LPEN1
G.711
PCMI
AMP3
RXGENB
GSX0
CH1
TXGAIN_S
Sin
+
LPAD
ATTs
RX2TX1
_GAIN
Center
Clip
GPAD Sout
10kΩ
TXDETA
G.729.A
T S W
TXGAIN Encoder
_CH1
SC_TXEN
AIN0N
A/D0
BPF
TX
Buffer0
AIN0P
-
AMP0
TXGAINA CODECA_TXEN
G.711
TX
Buffer1
DC EN
Bus Control
Unit
ACK1B/
GPIOA[5]
ACK0B/
GPIOA[4]
FR1B
CH2
FR0B
WRB
RDB
MGEN_E
XFLAG
MGEN_FRFLA
TXGAIN
_CH2
RX1TX2
_GAIN
Linear PCM
Codec
(CODEC_A)
AF
Echo Canceller
STGAINA
Speech Codec
CSB
16b
G.729.A
Decoder
CH1
RX
Buffer0
T S W
8b
D0-D15
A0-A7
10kΩ
Rout
CODECA_RXEN
SC_RXEN
ATTr
Rin
RXGAIN_SC
RXGAIN
RXGAIN
_CH1
VFRO0
RXGEN
RXDET
RX_SIG
D/A0
LPF
RXGAIN
_CH2
AMP2
CH2
RXGENA
G.711
RX
Buffer1
DC_EN
AVREF
Various generator paths
TXDETA
FSK_DET
DTMF_REC
TGEN0_EXFL
TONE_GEN0
(TONEA/ B)
FGEN_FLAG
DTMF_CODE[3:0]
FDET_D[7:0]
DTMF_DET
TGEN1_EXFL
TONE_GEN1
(TONEC/ D)
FDET_RQ
FDET_FER/FDET_OER
VREF
Various detector paths
TXGEN
RXGENA_EN
TIMER
DPGEN
RXGENA
RXGENB_EN
TIMOVF
GPIO2
GPIO0
DPDET
Frame/DMA
Controller
DVDD2
TXDETB
DVDD1
Control
Register
RXGENB
RXGEN
DVDD0
DGND2
TONE_DET0
TONE0_DET
TONE1_DET
DGND1
TONE_DET1
FSK_GEN
DGND0
RXDET
POWER
PLL
CKGN
MCK
SYNC(8kHz)
AGND
INT
AVDD
INTB/
GPIOA[6]
VREGOUT
OSC
12.288MHz
Note: The I/O pins represented by “ ” can be used for 100-pin packages only.
DP DET
DTMF_DET
DTMF CODE[3:0]
TONE0 DET
TONE1_DET
DP DET
FDET_RQ
FDET_FER/FDET_OER
FGEN FLAG
TIMOVF
8
VGB
4
6
TST1
FEDL7204-001DIGEST-01
XO
[5:0]
GPIO
[3:0]
GPIO
TST0
PDNB
[7:0]
GPIOC
XI
CLKOUT
ML7204-001
3/42
OKI [ OKI ELECTRONIC COMPONETS ]
