Document
DS2165/DS2165Q
DS2165/DS2165Q 16/24/32Kbps ADPCM Processor
FEATURES • Compresses/expands 64Kbps PCM voice to/from
either 32Kbps, 24Kbps, or 16Kbps
• Dual, fully independent channel architecture; device
can be programmed to perform either: – two expansions – two compressions – one expansion and one compression
• Interconnects directly to combo-codec devices
• Input to output delay is less than 375 µs
• Simple serial port used to configure the device
• Onboard Time Slot Assigner Circuit (TSAC) function
allows data to be input/output at various time slots
• Supports Channel Associated Signaling
• Each channel can be independently idled or placed
into bypass
• Available hardware mode requires no host processor;
ideal for voice storage applications
• Backward-compatible with the DS2167 ADPCM
Processor Chip
• Single +5V supply; low-power CMOS technology
• Available in 24-pin DIP and 28-pin PLCC
PIN ASSIGNMENT
RST TM0 TM1
A0 A1 A2 A3 A4 A5 SPS MCLK VSS
1
2 3.