WT11i-A-AI Bluegiga Technologies, WT11i-A-AI Datasheet - Page 31

• Manufacturer Part Number: WT11i-A-AI
• Description: Bluetooth / 802.15.1 Modules WT11i Class1 2.1+EDR Chip Ant, iWRAP 2.2
• Manufacturer: Bluegiga Technologies

Specifications of WT11i-A-AI

• Rohs: yes
• Class: 1
• Frequency Band: 2.4 GHz
• Sensitivity: - 83 dBm
• Operating Supply Voltage: 3.3 V
• Output Power: 17 dBm
• Interface Type: GPIO, UART, USB
• Antenna Connector Type: Chip
• Maximum Operating Temperature: + 85 C
• Dimensions: 35.8 mm x 14.5 mm x 2.3 mm
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

Figure 28: 16-bit Slot Length and Sample Formats
8.7 Additional Features
WT11i has a mute facility that forces PCM_OUT to be 0. In master mode, PCM_SYNC may also be forced to
0 while keeping PCM_CLK running which some codecs use to control power down.
8.8 PCM_CLK and PCM_SYNC Generation
WT11i has two methods of generating PCM_CLK and PCM_SYNC in master mode. The first is generating
these signals by DDS from BlueCore4-External internal 4MHz clock. Using this mode limits PCM_CLK to 128,
256 or 512kHz and PCM_SYNC to 8kHz. The second is generating PCM_CLK and PCM_SYNC by DDS from
an internal 48MHz clock (which allows a greater range of frequencies to be generated with low jitter but
consumes more power). This second method is selected by setting bit 48M_PCM_CLK_GEN_EN in
PSKEY_PCM_CONFIG32. When in this mode and with long frame sync, the length of PCM_SYNC can be
either 8 or 16 cycles of PCM_CLK, determined by LONG_LENGTH_SYNC_EN in PSKEY_PCM_CONFIG32.
The Equation XXX describes PCM_CLK frequency when being generated using the internal 48MHz clock:
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