COD0414X
0.18
m VOICE BAND SIGNAL INTERFACE
1
GENERAL DESCRIPTION
This IP core has been developing for AFE (Analog-front-end) function of voice signal processing with 14bit 8KHz voice
codec.
The core consists of 14bit linear monolithic PCM CODEC/transmit and receive band-pass filters utilizing the sigma-
delta A/D and D/A conversion architecture.
It offers a number of programmable functions accessed through a serial control channel that easily interfaces to any
classical micro controller.
This IP core is suitable for digital mobile phones, as cellular and cordless phones, or any battery powered
equipment.
FEATURES
-- Analog 2.8Volt Operation
-- Linear 14bit Codec
-- 3 Mic Inputs (2 Differential and 1 Single)
-- 3 Analog Outputs 32ohm Driver (2 Differential and 1 Single)
-- Mic Volume 0dB ~ 22.5dB & 20dB Gain On/Off
-- Speaker Volume 0dB ~ -30dB
-- Side-tone -12.5dB ~ -27.5dB
-- Serial Data Input, Output Format
-- Control Register Interface for u-Controller
TYPICAL APPLICATIONS
-- Digital Mobile Phones
-- Cellular and Cordless Phones
0.18
m VOICE BAND SIGNAL INTERFACE
COD0414X
2
FUNCTIONAL BLOCK DIAGRAM
REFERENCE
AOUT1P
AOUT1N
SOUT
SIN
MIC Volume
0dB - 22.5dB
1.5dB Step
ISS[1:0]
AVDD25A1
STEN
SGN[3:0]
20dB
On/Off
X10
REN
MIC1P
MIC1N
MIC2P
MIC2N
MIC3
M
U
X
2
PGA
ADC
Signal I/F
AOUT2P
AOUT2N
AOUT3
VREF
PGA
OSS[1:0]
2
RGN[3:0]
4
Speaker Volume
0dB - 30dB
-2dB Step
TGN[3:0]
4
PGA
4
+
DAC
Sidetone AMP
-12.5dB - 27.5dB
-1dB Step
Control
Register
MCLK
FS
PORSB
CSB
WRB
RDB
A[8:0]
DIN[7:0]
DOUT[7:0]
AVDD25A2 AVDD25A3 AVDD25A4 AVDD25A5 AVDD25A6 AVDD25A7 AVDD25A8 AVDD18D
DVABB
AVSS25A1 AVSS25A2 AVSS25A3 AVSS25A4 AVSS25A5 AVSS25A6 AVSS25A7 AVSS25A8 AVSS18D
Ver 1.7 (Nov. 2002)
No responsibility is assumed by SEC for its use nor for any infringements of patents or other rights of third parties
that may result from its use. The content of this datasheet is subject to change without any notice.
COD0414X
0.18
m VOICE BAND SIGNAL INTERFACE
3
CORE PIN DESCRIPTION
Pin Name
I/O Type
I/O Pad
Pin Description
Power Pins
AVDD25A1
AP
vdd2t_abb
Analog Power Supply 1 (2.5V)
AVSS25A1
AG
vss2t_abb
Analog Ground 1
AVDD25A2
AP
vdd2t_abb
Analog Power Supply 2 (2.5V)
AVSS25A2
AG
vss2t_abb
Analog Ground 2
AVDD25A3
AP
vdd2t_abb
Analog Power Supply 3 (2.5V)
AVSS25A3
AG
vss2t_abb
Analog Ground 3
AVDD25A4
AP
vdd2t_abb
Analog Power Supply 4 (2.5V)
AVSS25A4
AG
vss2t_abb
Analog Ground 4
AVDD25A5
AP
vdd2t_abb
Analog Power Supply 5 (2.5V)
AVSS25A5
AG
vss2t_abb
Analog Ground 5
AVDD25A6
DP
vdd2t_abb
Digital Power Supply 6 (2.5V)
AVSS25A6
DG
vss2t_abb
Digital Ground 6
AVDD25A7
AP
vdd2t_abb
Analog Power Supply 7 (2.5V)
AVSS25A7
AG
vss2t_abb
Analog Ground 7
AVDD25A8
AP
vdd2t_abb
Analog Power Supply 8 (2.5V)
AVSS25A8
AG
vss2t_abb
Analog Ground 8
AVDD18D
DP
vdd2t_abb
Digital Power Supply (1.8V)
AVSS18D
DG
vss2t_abb
Digital Ground
DVABB
AG
vbb_abb
Analog Ground
Analog Pins
MIC1P
AI
pia_abb
Mic Input 1 Positive
MIC1N
AI
pia_abb
Mic Input 1 Negative
MIC2P
AI
pia_abb
Mic Input 2 Positive
MIC2N
AI
pia_abb
Mic Input 2 Negative
MIC3
AI
pia_abb
Mic Input 3 (Single Input)
AOUT1P
AO
poa_abb
Differential Output 1 Positive
AOUT1N
AO
poa_abb
Differential Output 1 Negative
AOUT2P
AO
poa_abb
Differential Output 2 Positive
AOUT2N
AO
poa_abb
Differential Output 2 Negative
AOUT3
AO
poa_abb
Single Output
0.18
m VOICE BAND SIGNAL INTERFACE
COD0414X
4
CORE PIN DESCRIPTION
(Continued)
Pin Name
I/O Type
I/O Pad
Pin Description
Analog Pins (continued)
VREF
AO
poa_abb
Reference Output
VCOMDR
AB
poa_abb
tied to VREF pin
VCOMDT
AB
poa_abb
tied to VREF pin
VCOMR
AB
poa_abb
tied to VREF pin
VCOMT
AB
poa_abb
tied to VREF pin
VREFMR
AB
poa_abb
tied to Analog Ground pin
VREFMT
AB
poa_abb
tied to Analog Ground pin
VREFPR
AB
poa_abb
tied to VREF pin
VREFPT
AB
poa_abb
tied to VREF pin
Digital Pins
SOUT
DO
pot2_abb
ADC Serial Data Ouput
SIN
DI
picc_abb
DAC Serial Data Input
MCLK
DI
picc_abb
Master Clock Input
FS
DI
picc_abb
Frame Sync Pulse Input
PORSB
DI
picc_abb
Power-On-Reset and Reset Control Input (Low Active)
CSB
DI
picc_abb
Chip Select (Low Active)
WRB
DI
picc_abb
Write Enable (Low Active)
RDB
DI
picc_abb
Read Enable (Low Active)
A[8:0]
DI
picc_abb
Control Register Address
DIN[7:0]
DI
picc_abb
Control Register Data Input (WR is Enabled)
DOUT[7:0]
DO
pot2_abb
Control Register Data Output (RD is Enabled)
I/O Type Abbr.
-- AI: Analog Input
-- DI: Digital Input
-- AO: Analog Output
-- DO: Digital Output
-- AB: Analog Bi-direction
-- DB: Digital Bi-direction
-- AP: Analog Power
-- AG: Analog Ground
-- DP: Digital Power
-- DG: Digital Ground
COD0414X
0.18
m VOICE BAND SIGNAL INTERFACE
5
CORE CONFIGURATION
cod0414x
SIN
MCLK
FS
MIC1P
MIC1N
MIC2P
MIC2N
MIC3
PORSB
CSB
WRB
RDB
A[8:0]
DIN[7:0]
DOUT[7:0]
VREFMT
VREFMR
VCOMT
VCOMR
VCOMDT
VCOMDR
VREF
SOUT
AOUT3
AOUT2N
AOUT2P
AOUT1N
AOUT1P
VREFPT
VREFPR
AVSS25A1
AVSS25A2
AVSS25A3
AVSS25A4
AVSS25A5
AVSS25A6
AVSS25A7
AVSS25A8
AVSS18D
DVABB
AVDD18D
AVDD25A8
AVDD25A7
AVDD25A6
AVDD25A5
AVDD25A4
AVDD25A3
AVDD25A2
AVDD25A1
Power Group :
VADD25A1 (AVDD25A1,AVDD25A2,AVDD25A3,AVDD25A4,AVDD25A5,AVDD25A8)
VADD25A2 (AVDD25A7)
AVDD18D (AVDD25A6,AVDD18D)
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