AM79C202 Legerity, AM79C202 Datasheet
AM79C202
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AM79C202 Summary of contents
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... Am79212/Am79C202 Advanced Subscriber Line Interface Circuit (ASLIC™) Device Advanced Subscriber Line Audio-Processing Circuit (ASLAC™) Device DISTINCTIVE CHARACTERISTICS Performs all of the functions of a CODEC-Filter Single channel architecture Performs Battery-Feed, Ring-trip, Signaling, Coding, Hybrid, and Test (BORSCHT) functions Single hardware design meets multiple country ...
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... Table 3. ASLIC Device Relay Driver Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 4. ASLIC Device Transmission Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 5. ASLAC Device DC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 6. ASLAC Device Transmission and Signaling Specifications . . . . . . . . . . . . . . . . 19 Table 7. Microprocessor Interface Table 8. Data Clock Table 9. User-Programmable Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 10. ASLIC/ASLAC Devices Linecard Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 2 Am79212/Am79C202 Data Sheet ...
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... The Am79212/Am79C202 Advanced Subscriber Line Interface chip set implements a universal telephone line interface function. This enables the design of a single, low-cost, high-performance, fully-software-program- mable line interface card for multiple country applica- tions world wide. All AC, DC, and Signaling parameters are fully programmable via the General Control Inter- ...
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... ORDERING INFORMATION ASLIC Device Legerity standard products are available in several packages and operating ranges. The order number (Valid Com- bination) is formed by a combination of the elements below. Must order Am79C202 with the device below. Am79212 J Valid Combinations Am79212 Note: * Functionality of the device from 0°C to +70°C is guaranteed by production testing. Performance from –40°C to +85°C is guaranteed by characterization and periodic sampling of production units ...
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... C TEMPERATURE RANGE C = Commercial (0°C to 70°C)* PACKAGE TYPE J = 32-pin Plastic Leaded Chip Carrier (PL032) DEVICE NUMBER/DESCRIPTION Am79C202 Advanced Subscriber Line Interface Circuit Valid Combinations Valid Combinations list configurations planned supported in volume for this device. Consult the local Legerity sales office to confirm availabil- ity of specific valid combinations and to check on newly released combinations ...
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... Am79212 32-Pin PLCC ASLAC Device 8 Am79C202 Am79212/Am79C202 Data Sheet 29 RSVD 28 HPB 27 HPA 26 RSVD BAL1 25 24 BAL2 23 VREF VTX 22 21 IDC 19780A-004 29 IAB 28 IREF 27 VLBIAS ...
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... This input is nomi- nally at VREF potential. RSVD Input Reserved. This is used during Legerity testing. In the application, this pin must be floating. SA, SB Input A and B Lead Voltage Sense. These pins sense the voltages on the line side of the fuse resistors at the A and B leads ...
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... C/I channel. In the output or input modes, the logic state of these pins appears in the I/O1 and I/O2 bits of the upstream C/I channel. When programmed as outputs, they can control an external logic device or they can be connected to pin C3, C4 the ASLIC device to control test relay drivers RY1OUT, RY2OUT, and RY3OUT. 8 Description Description Am79212/Am79C202 Data Sheet ...
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Pin Names Type IREF Input Current Reference. An external resistor (RREF) connected between this pin and analog ground generates an accurate on-chip reference current. This current is used by the ASLAC device in its DC Feed and loop-supervision circuits. IRTA, ...
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... The user-programmable filters set the receive and transmit gain, perform the transhybrid balancing func- tion, permit adjustment of the two-wire termination im- pedance, and adjustment (equalization) of the receive and transmit paths. Adaptive transhybrid balancing is also included. Am79212/Am79C202 Data Sheet provide frequency attenuation ...
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The PCM data can be either 8-bit companded A-law or µ-law code. Voice and control data are read or written to the digital interface in channels that are pin strap com- patible. Besides the CODEC functions, the ASLAC device pro- ...
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... On-hook Disconnect On-hook Standby On-hook Disable On-hook Active = 294 Ω Off-hook Active 600 Ω Off-hook Disable R L ASLAC device Activated ASLAC device Inactive, C/I Standby state command issued Am79212/Am79C202 Data Sheet Min Typ Max Unit 105 120 215 330 450 ...
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ABSOLUTE MAXIMUM ELECTRICAL AND THERMAL RATINGS ASLIC Device Storage temperature .................. –55°C ≤ T Ambient temperature, under Bias............................... –40°C ≤ T Ambient relative humidity (noncondensing) ..................................... 5 to 100% V with respect to AGND/DGND ........ –0 ...
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... L 35.4 BAT 43.4 V – µA 0.8 C2 2.0 –200 –400 –50 2.0 is referenced DC , 35.7 kΩ resistor con- REF 0.0253 REF = 20 µA 4.2 5.58 20 1/333 1/667 Am79212/Am79C202 Data Sheet Typ Max Unit Note V – 1.1 V – 0.5 4 BAT BAT 21.1 22.68 V 12.19 13.04 Ω 250 375 56 µA 0.8 V –80 200 µA 90 200 3 0.8 40 µ ...
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Table 2. ASLIC Device DC Specifications (continued) No. Item 14 Input current, SA and SB pins 15 Input current HPA and HPB pins 16 IDC input impedance 17 K1 Incremental DC Current Gain 18 Metallic offset current ASLIC Device Relay ...
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... Hz = –40°C to 0°C/70°C to 85°C 1000 to 3400 Hz = –40°C to 0°C/70°C to 85°C 200 to 3400 Hz 200 to 1000 Hz = –40°C to 0°C/70°C to 85°C Am79212/Am79C202 Data Sheet Min Typ Max Unit –0.1 +0.1 –0.15 +0.15 – ...
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Table 4. ASLIC Device Transmission Specifications (continued) No. Item 19 Low frequency induction Active state, VLONG = 30 V rms, (REA method mA Longitudinal AC current ...
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... For VLBIAS equation, see Lon- voltage gitudinal Control Loop section 18 Capacitance load on VLBIAS 19 Capacitance load on IRTA or IRTB 18 Condition Min 172.7 0.0624 27.93 –50 –40 –80 2.0 –1 8.84 +1 –5 Am79212/Am79C202 Data Sheet Typ Max Unit Note 17 µA 188.5 204.9 0.0694 0.0764 A/A µA 29.93 31.93 17 ±2.2 V ±1.6 ± µA ± ...
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Table 6. ASLAC Device Transmission and Signaling Specifications No. Item 1 Insertion loss Input: 1014 Hz, –10 dBm0 dB, AISN and Z filters disabled A-D T ...
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... G ≥ +0.25 –4 AISN –7 40 –5 –10 – 365 kΩ BAT1 BAT2 = 1.0 µF, 50 Ω fuse resistors, R DC1 SR1 and RSN Am79212/Am79C202 Data Sheet Typ Max Unit +0. +10 % –10 % +0. +10 % – +10 –10 + ...
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Ambient temperature = 70°C Active state, normal polarity for transmission performance 0 dBm = 600 Ω (0.775 V rms) Programmed DC Feed conditions: VAPP (Apparent battery voltage) = 50.2 V ILA (Active state loop-current limit) = 47.6 ...
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... When relative levels (dBm0) are used in any of the following transmission characteristics, the specification holds for any setting of (AX + GX) gain from ( RG) from 0 to –12 dB. These transmission characteristics are valid for 0°C to 70°C and for VCC = +5 V ± 0. Am79212/Am79C202 Data Sheet ...
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Attenuation Distortion The deviations from nominal attenuation will stay within the limits shown in Figure 1. The reference frequency is 1014 Hz and the signal level is –10 dBm0. Minimum transmit attenuation dB ...
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... ASLAC Device Specification (Either Path) 0 500 600 1000 Frequency (Hz) Figure 2. Group Delay Distortion in the same frequency range, is less than –46 dBm0. With f 0 Am79212/Am79C202 Data Sheet 2600 2800 swept between 0 are less than –28 dBm0. This 0 ...
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Gain Linearity The gain deviation relative to the gain at –10 dBm0 is within the limits shown in Figure 3 (A-law) and Figure 4 (µ-law) for either transmission path when the input is a sine wave signal of 1014 Hz. ...
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... Improved distortion at lower levels in LSSGR applications can be obtained by proper selection of the GX and GR ranges. ASLAC Device Specification –45 –40 –30 Figure 5. Total Distortion with Tone Input (Both Paths Signal-to-Total Distortion (dB) 0 Input Level (dBm0) Am79212/Am79C202 Data Sheet A-law µ-Law A 35 35 ...
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Overload Compression Figure 6 shows the acceptable region of operation for input signal levels above the reference input power (0 dBm0). The conditions for this figure are: ( < transmit path ≤ +12 dB; (2) –12 dB ≤ ...
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... The drive capability of the GCI interface allows eight ASLAC devices per linecard (eight subscriber lines) without using external buffers. 28 Table 7. Microprocessor Interface Parameter Min. 130 +20 DCH 50 50 Table 8. Data Clock Parameter Min. 478 239 90 90 Am79212/Am79C202 Data Sheet Typ. Max. Units Note –50 ns DCL ns 100 ns 150 µ ...
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SWITCHING WAVEFORMS Input and Output Waveforms for AC Tests 2.4 0.45 Data Clock Timing – DCL 2.0 2 Test Points 0.8 0 ASLIC/ASLAC Products 12 29 ...
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... GCI Waveforms DCL FS DD, DU GCI Timing (Detail DCL Bit 7 Detail Am79212/Am79C202 Data Sheet Bit Timing diagram valid for f = 4096 kHz DCL ...
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Table 9. User-Programmable Components • 63.5 Z – 2WIN F • Z 254 ----------- - -------------------------------------------------------- - • • 63 ...
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... CB TMG RTMG CBAT D1 + C.O. (–) BATTERY RSR1 RSR2 *These pins are unavailable for 32-pin PLCC option. + Non-polarized Battery Capacitor Ground + indicates bias Am79212/Am79C202 Data Sheet + VCCA VCCD AGND VREF DGND IDC RRX VOUT U2 NC VINM VIN DCL ...
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Table 10. ASLIC/ASLAC Devices Linecard Parts List Item Type U1 ASLIC device U2 ASLAC device U3 LCP150S D1 Diode RFA, RFB Resistor RSA, RSB Resistor RSR1, RSR2 Resistor RGFD1 Resistor RRX, RT* Resistor RBAT1, RBAT2 Resistor RAB Resistor RREF Resistor ...
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... Updated the Pin Description table to correct inconsistencies. • Minor changes were made to the data sheet style and format to conform to Legerity standards. 34 .009 .015 .125 .140 .080 .095 SEATING PLANE .013 .021 .050 REF. Am79212/Am79C202 Data Sheet .042 .056 .400 REF. .490 .530 16-038FPO-5 PL 032 DA79 SIDE VIEW 6-28-94 ae ...
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... Legerity's products are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body other applications intended to support or sustain life any other application in which the failure of Legerity's product could create a situation where personal injury, death, or severe property or environmental damage may occur. Legerity reserves the right to discontinue or make changes to its products at any time without notice ...
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... P.O. Box 18200 Austin, Texas 78760-8200 Telephone: (512) 228-5400 Fax: (512) 228-5510 North America Toll Free: (800) 432-4009 To contact the Legerity Sales Office nearest you download or order product literature, visit our website at www.legerity.com. To order literature in North America, call: (800) 572-4859 or email: americalit@legerity ...