KS8620 Samsung Semiconductor, Inc., KS8620 Datasheet
KS8620
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KS8620 Summary of contents
Page 1
... KS8620 INTRODUCTION The KS8620 consists of on-chip PCM encoders, decoders (PCM CODECs) and PCM line filter. This device provide all the functions required to interface a full- duplex voice telephone circuit, digital answering phone. This device is designed to perform the transmit encoding and receive decoding as well as the transmit and receive filtering function in PCM system ...
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... KS8620 BLOCK DIAGRAM R2 VFxI Analog VFxI Power Amplifier 4 1 Chip CODEC for Digital Answering phone 14 GSx Switched RC Active Capacitor Filter B.P.F comparator A/D Voltage Control Reference Logic Switched RC Active Sample & Hold Capacitor Filter L.P Fig 1. Block Diagram Auto-zero logic Sample & ...
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... KS8620 PIN DESCRIPTION Pin No Symbol GND Analog ground Analog output of the receiver filter Vcc = + Receive frame sync pulse. 8KHz pulse train PCM data input R 7 BCLK / Logic input which selects either 1.536MHz / 1.544MHz or 2.048MHz for master ...
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... KS8620 ELECTRICAL CHARACTERISTICS (Unless otherwise specified : Characteristic System Power Dissipation Power down Current down ) down ) Active Current I I Digital Interface Input Low Voltage Input High Voltage Input Low Current Input High Current Output Low Voltage Output High Voltage ...
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... KS8620 TIMING CHARACTERISTICS (Unless otherwise specified : Characteristic System Frequency of Master Clock Rise time of Bit Clock t Fall Time of Bit Clock t Hold Time for Bit Clock t low to Frame sync Hold Time for Bit Clock t High to Frame sync Set-up Time from Frame t SU(FBCL) ...
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... KS8620 TRANSMISSION CHARACTERISTICS (Unless otherwise specified : Vin = 0dBm0, transmit input amplifier connected for unity-gain, non-inverting ) Characteristic System Amplitude Response G Receive Gain, Absolute V(ARX) G Receive Gain, Relative V(RRX) to Gv( ) RRX G Absolute Receive Gain / T Variations with temperature G Receive Gain Variations with level ...
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... PCM code equals alternating RXC positive and negative zero, KS8620 KS8620 TXC Min Typ Max Unit + 0.1 dB 0.4 -0.4 dB 0.8 -0.8 200 ...
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... KS8620 TRANSMISSION CHARACTERISTICS Characteristic System Noise, Single Frequency NSF PSRR Positive Power Supply Rejection, Transmit PSRR Negative Power Supply Rejection, Transmit PSRR Positive Power Supply Rejection, Receive PSRR Negative Power Supply Rejection, Receive Spurious Out-Band Signals SOS at the Channel Output Distortion ...
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... D = Steady PCM code 300Hz - 3400Hz, (RX-TX) VFXI = 0V OUTPUT X -Law PCM : KS8620 Full Scale Min Typ Max Unit -41 -dB -41 ...