QUAD PROGRAMMABLE PCM IDT821054 CODEC WITH MPI INTERFACE 2 programmable tone generators per channel for testing, FEATURES ringing and DTMF generation 4-channel CODEC with on-chip digital filters 1 programmable FSK generator for sending Caller-ID messages Software selectable A/-law, linear code conversion Two programmable chopper clocks Meets ITU-T G.711 - G.714 requirements Master clock frequency selectable: 1.536 MHz, 1.544 MHz, 2.048 Programmable digital filters adapting to system demands: MHz, 3.072 MHz, 3.088 MHz, 4.096 MHz, 6.144 MHz, 6.176 MHz or - AC impedance matching 8.192 MHz - Transhybrid balance Advanced test capabilities: - Frequency response correction - 3 analog loopback tests - Gain setting - 5 digital loopback tests Supports two programmable PCM buses - Level metering function Flexible PCM interface with up to 128 programmable time slots, High analog driving capability (300 AC) data rate from 512 kbits/s to 8.192 Mbits/s TTL/CMOS compatible digital I/O MPI control interface CODEC identification Broadcast mode for coefficient setting +5 V single power supply 7 SLIC signaling pins (including 2 debounced pins) per channel Low power consumption Fast hardware ring trip mechanism Operating temperature range: -40C to +85C Package available: 64 Pin PQFP FUNCTIONAL BLOCK DIAGRAM CH1 CH3 Filter and A/D Filter and A/D VIN1 VIN3 D/A and Filter D/A and Filter VOUT1 VOUT3 DSP 2 Inputs 2 Inputs Core 3 I/Os 3 I/Os SLIC Signaling SLIC Signaling 2 Outputs 2 Outputs CH2 CH4 DR1 MCLK PLL and Clock General Control DR2 MPI Interface PCM Interface CHCLK1 Generation Logic DX1 CHCLK2 DX2 CI TSX1 TSX2 RESET INT12 INT34 CCLK CS CO FS BCLK The IDT logo is a registered trademark of Integrated Device Technology, Inc. FEBRUARY 26, 2003 INDUSTRIAL TEMPERATURE RANGE 1 2003 Integrated Device Technology, Inc. DSC-6035/5IDT821054 QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE RANGE four channels of the IDT821054. The device also provides 7 signaling DESCRIPTION pins per channel for SLICs. The IDT821054 is a feature rich, single-chip, programmable 4- The IDT821054 is programmed via a Microprocessor Interface (MPI). channel PCM CODEC with on-chip filters. Besides the -Law/A-Law Two PCM buses are provided to transfer the compressed or linear PCM companding and linear coding/decoding (14 effective bits + 2 extra sign data. bits), the IDT821054 also provides 1 FSK generator for sending Caller- The device offers strong test capability with several analog/digital ID messages, 2 programmable tone generators per channel (which can loopbacks and level metering function. It brings convenience to system generate ring signals) and 2 programmable chopper clocks for SLICs. maintenance and diagnosis. The digital filters in the IDT821054 provide necessary transmit and A unique feature of Hardware Ring Trip is implemented in the receive filtering for voice telephone circuits to interface with time-division IDT821054. When an off-hook signal is detected, the IDT821054 will multiplexed systems. An integrated programmable DSP realizes AC reverse an output pin to stop the ringing signal immediately. impedance matching, transhybrid balance, frequency response The IDT821054 can be used in digital telecommunication correction and gain adjustment functions. The IDT821054 supports 2 applications such as Central Office Switch, PBX, DLC and Integrated PCM buses with programmable sampling edge, which allows an extra Access Devices (IADs), i.e. VoIP and VoDSL. delay of up to 7 clocks. Once the delay is determined, it is effective to all PIN CONFIGURATION VIN1 49 32 BCLK 50 FS GNDA1 31 51 DR2 VOUT1 30 VDDA12 52 29 DX2 53 TSX2 VOUT2 28 GNDA2 54 27 DR1 55 26 DX1 VIN2 IDT821054 56 TSX1 CNF 25 VDDB 57 24 VDDD 64 Pin PQFP 58 RESET VIN3 23 59 MCLK GNDA3 22 VOUT3 60 21 GNDD 61 CO VDDA34 20 VOUT4 62 19 CI 63 CCLK GNDA4 18 64 CS VIN4 17 2 SI2 3 1 48 SI2 2 SI1 3 2 47 SI1 2 SB3 3 3 46 SB3 2 SB2 3 4 45 SB2 2 SB1 3 5 44 SB1 2 SO2 3 6 43 SO2 2 SO1 3 7 42 SO1 2 SO1 4 8 41 SO1 1 SO2 4 9 40 SO2 1 SB1 4 10 39 SB1 1 SB2 4 11 38 SB2 1 SB3 4 12 37 SB3 1 SI1 4 13 36 SI1 1 SI2 4 14 35 SI2 1 INT34 15 34 INT12 CHCLK2 16 33 CHCLK1