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DS2165QL Datasheet

  • DS2165QL

  • Solid-State Recorder

  • 18頁

  • ETC

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DS2165/DS2165Q
16/24/32kpbs ADPCM Processor
www.dalsemi.com
FEATURES
摟
摟
Compresses/expands 64 kbps PCM voice
to/from either 32 kbps, 24 kbps, or 16 kbps
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
碌s
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
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VDD
YIN
CLKY
FSY
YOUT
CS
SDI
SCLK
XOUT
FSX
CLKX
XIN
摟
摟
摟
摟
摟
摟
摟
摟
摟
摟
24-PIN DIP (600-mil
)
TM1
TM0
RST
NC
VDD
YIN
CLKY
NC
A0
A1
A2
A3
A4
A5
5
6
7
8
9
10
11
12
4
3
2
1
28
27
26
25
24
23
22
21
20
19
13 14
15
16
17
18
FSY
YOUT
CS
SDI
SCLK
XOUT
NC
A 3-volt Operation Version
is Available (DS2165QL)
DESCRIPTION
The DS2165 ADPCM Processor Chip is a dedicated Digital Signal Processing (DSP) chip that has been
optimized to perform Adaptive Differential Pulse Code Modulation (ADPCM) speech compression at
three different rates. The chip can be programmed to compress (expand) 64 kbps voice data down to (up
from) either 32 kbps, 24 kbps, or 16 kbps. The compression to 32 kbps follows the algorithm specified by
CCITT Recommendation G.721 (July 1986) and ANSI document T1.301 (April 1987). The compression
to 24 kbps follows ANSI document T1.303. The compression to 16 kbps follows a proprietary algorithm
developed by Dallas Semiconductor. The DS2165 can switch compression algorithms on-the-fly. This
allows the user to make maximum use of the available bandwidth on a dynamic basis.
1 of 18
SPS
MCLK
VSS
NC
XIN
CLKX
FSX
28-PIN PLCC
092299

DS2165QL 產(chǎn)品屬性

  • Maxim Integrated Products

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