MEDs Technologies Pte Ltd MBTM64 Manual Do Utilizador
MEDS Technologies Bluetooth Module64 Datasheet V0.8
CONFIDENTIAL
2nd-July-2012 11/18
3.2.3 Digital Codec Interface
The main features of the digital codec are as the following.
Operation Voltage : 1.8V or 3.3V
Data format : A-law, u-law, linear PCM
Frame format : MSB left-justified, I2S, PCM digital
Frame frequency : 8kHz, 16kHz
Data length : 8bit, 16bit
Bit clock function : Master, slave
Data sampling edge : Rise and fall edges
Fame syschronization signal polarity : High active and low active
Built-in CODEC :
Data format : A-law, u-law, linear PCM
Frame format : MSB left-justified, I2S, PCM digital
Frame frequency : 8kHz, 16kHz
Data length : 8bit, 16bit
Bit clock function : Master, slave
Data sampling edge : Rise and fall edges
Fame syschronization signal polarity : High active and low active
Built-in CODEC :
o
CVSD (Continous variable slope delta modulation)
o
PCM (Pulse code modulation)
o
mSBC (Modified sub-band CODEC for wide-band speech)
Figure 3.2.3a: Connection of Digital Codec IC when Module 64 as Master/Slave for bit clock
Frame Sync
Freq [kHz]
Freq [kHz]
# of bit
clock [FS]
clock [FS]
Bit clock
frequency
switching
frequency
switching
Bit clock frequency
for a short cycle time
[kHz]
for a short cycle time
[kHz]
Bit clock frequency
for a long cycle
time [kHz]
for a long cycle
time [kHz]
Usage
8 50
No
400
---
52 416
---
100 800
---
130 1040
---
250 2000
---
8 Yes
64.20
63.88
16 128.71
127.45
32 257.3
254.90
64 520.00
5000.00
128 1040
1000.00
16 50
No
800
---
130 2080
---
250 4000
---
32 Yes
509.80
514.85
64 1040
1000.00
128 208
2000.00