am79761 Advanced Micro Devices, am79761 Datasheet
am79761
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am79761 Summary of contents
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... Monolithic Clock Synthesis and Clock Recovery requires no external components n Word Synchronization Function (Comma Detect) GENERAL DESCRIPTION The Am79761 Gigabit Ethernet Physical Layer Serial- izer/Deserializer (GigaPHY-SD) device is a 1.25 Gbps Ethernet Transceiver optimized for Gigabit Ethernet/ 1000BASE-X applications. It implements the Physical Medium Attachment (PMA) layer for a single port. ...
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... BLOCK DIAGRAM 10 TXD[0: PLL Clock REFCLK EWRAP 10 RXD[0: RCLK RCLKN Frame Logic COM_DET EN_CDET Parallel to Serial Multiply Serial to Parallel Comma Detect Am79761 Clock Recovery 21560A-1 TX+ TX- RX+ RX- ...
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... N Connect LOGIC SYMBOL REFCLK RCLK RCLKN PHY EN_CDET Control EWRAP COM_DET TEST4 Test Port TDST [3: DVDD DVDD_T DVDD_P Am79761 GigaPHY-SD DVSS DVSS_D DVSS Am79761 N/C 48 COM_DET 47 DVSS_T 46 RXD0 45 RXD1 44 RXD2 43 DVDD_T 42 RXD3 41 RXD4 40 RXD5 39 RXD6 38 DVDD_T ...
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... Physical Layer 10-Bit Transceiver for Gigabit Ethernet GigaPHY™-SD) Valid Combinations list configurations planned to be sup- ported in volume for this device. Consult the local AMD sales office to confirm availability of specific valid combinations and to check on newly released combinations. Am79761 Valid Combinations ...
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... PCnet™-PCI Single-Chip Ethernet Controller (for PCI bus) Am79C970A PCnet™-PCI II Full Duplex Single-Chip Ethernet Controller (for PCI bus) PCnet™- FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus Am79C971 Am79761 5 ...
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... TEST3 39 24 EN_CDET 40 25 DVSS 41 26 TEST4 DVDD 44 29 DVDD_T 45 30 RCLKN 46 31 RCLK 47 32 DVSS_T 48 Am79761 Pin Name Pin No. Pin Name DVSS_T 49 N/C RXD9 50 DVDD RXD8 51 DVSS RXD7 52 RX- DVDD_T 53 DVDD_P RXD6 54 RX+ RXD5 55 DVDD RXD4 56 DVSS RXD3 57 AVDD ...
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... They must be connected source. DVDD_P PECL Power These pins supply power to the PECL blocks of the de- vice. They must be connected source critical that the signal supplied to these pins are clean to ensure good performance of the device. Am79761 7 ...
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... DVSS_T Ground These pins are the ground connections for the TTL blocks. They must be connected to the common exter- nal ground plane. AVSS Ground These pins are the ground connections for the analog blocks. They must be connected to an analog ground plane. Am79761 ...
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... PLL which does not require any external components. Serializer The Am79761 device accepts TTL input data as a par- allel 10-bit character on the TXD[0:9] bus which is latched into the input latch on the rising edge of REFCLK. This data will be serialized and transmitted ...
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... Word Alignment The Am79761 device provides 7-bit comma character recognition and data word alignment. Word synchroni- zation is enabled by asserting EN_CDET HIGH. When synchronization is enabled, the Am79761 device con- stantly examines the serial data for the presence of the Comma character. This pattern is 0011111XXX, where the leading zero corresponds to the fi ...
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... RCLK RCLKN COM_DET RXD[0:9] Potentially Corrupted Figure 19. Receiving Two Consecutive K28.5 + TCharacter Transmission Words K28.5 TChar TChar TChar Am79761 K28.5 TChar 21560A-5 11 ...
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... +1 – 2 – 2 Internally biased Outputs open max DD DD Outputs open max DD DD Am79761 ) . . . . . . . . . +3 VDD Min Typ Max Unit 2.0 — 5 — 0.8 V — 50 500 A — — -500 A 2.4 — — V — ...
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... VDD Current INPUT Limit VSS REFCLK and TTL Inputs A Figure 20. Input Structures D VDD INPUT INPUT D VSS High Speed Differential Input ( Am79761 All Resistors 3.3K 21560A-6 13 ...
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... Data Valid Figure 21. Transmit Timing Waveforms Table 21. Transmit AC Characteristics Test Conditions Measured between the valid data level of TXD[0:9] to the 1.4 V point of REFCLK 20% to 80%, 75 load sample basis bc = Bit clocks ns = Nano second Am79761 KS000010-PAL Data Valid Min Max 1.5 — 1.0 — , Tested SS — ...
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... T 4 Between V and V IL(MAX) IH(MIN) into 10 pf load Bit clock ns = Nano second 8B/10B IDLE pattern. Tested on a sample basis -12 dBc, RMS for 10 Bit Error Ratio Tested on a sample basis Am79761 T 3 Data Valid 21560A-8 Min Max Unit 3.0 — 2.0 — -500 500 -1.0 1 ...
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... Table 23. Reference Clock Requirements Test Conditions Range over which both transmit and receive reference clocks on any link may be centered Maximum frequency offset between transmit and receive reference clocks on one link Measured at 1.5 V Between V and V IL(MAX) Am79761 V (min (max) 21560A-9 il Min Max 123 127 ...
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... Figure 24. Parametric Measurement Information TTL Input and Output Rise and Fall Time 80% 20 Bit Time Amplitude Eye Width% Parametric Test Load Circuit TTL AC Output Load 75 V – 2 Am79761 V ih(min) V il(max 21560A-10 17 ...
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... RMS, tested on a sample basis (refer to Figure 8) Peak to peak, tested on a sample basis (refer to Figure 8) Am79761 Trigger Digitizing Scope 1.25 Gbps Single-Ended Measurement Trigger Digitizing Scope 1.25 Gbps ...
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... THERMAL CONSIDERATIONS The Am79761 is packaged in a 14- 10-mm conventional PQFP with an internal heat spreader. These Plastic Molding Compound Lead Symbol Thermal resistance from junction to case jc Thermal resistance from case to ambient in still air including ca conduction through the leads. Thermal resistance from case to ambient with 100 LFM airflow ca-100 Thermal resistance from case to ambient with 200 LFM airfl ...
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... AMD, the AMD logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. GigaPHY is a trademark of Advanced Micro Devices, Inc. Product names used in this publication are for identification purposes only and may be trademarks of their respective companies Am79761 ...