MPC952 Motorola, MPC952 Datasheet
MPC952
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MPC952 Summary of contents
Page 1
... The MR/OE pin allows the user to force the outputs into high impedance for board level test. For system debug the PLL of the MPC952 can be bypassed. When forced to a logic HIGH, the PLLEN input will route the signal on the RefClk input around the PLL directly to the internal dividers. Because the signal is routed through the dividers, it may take several transitions of the RefClk to affect a transition on the outputs ...
Page 2
... VCCO 25 Qb2 26 Qb3 27 GNDO 28 MPC952 GNDO 29 Qc0 30 Qc1 31 VCCO Figure 2. 32–Lead Pinout (Top View) MOTOROLA Figure 1. MPC952 Logic Diagram VCO 2 200–480MHz LPF FUNCTION TABLES fsela VCCO 15 Qa2 Control Pin 14 Qa1 VCO_Sel 13 GNDO MR/OE 12 Qa0 PLL_En 11 VCCI Pin Name ...
Page 3
... Maximum Quiescent Supply Current I CCA PLL Supply Current 1. The MPC952 outputs can drive series or parallel terminated 50 ( /2) transmission lines on the incident edge (see Applications Info section). 2. Inputs have pull–up, pull–down resistors which affect input current. PLL INPUT REFERENCE CHARACTERISTICS ( ...
Page 4
... VCC/2. This technique draws a fairly high the level of DC current and thus only a single terminated line can be driven by each output of the MPC952 clock driver. For the series terminated case however there current draw, thus the outputs can drive multiple series terminated lines. ...
Page 5
... DC voltage drop that will be seen between the V CC supply and the VCCA pin of the MPC952. From the data sheet the I VCCA current (the current sourced through the VCCA pin) is typically 15mA (20mA maximum), assuming that a minimum of 3.0V must be maintained on the VCCA pin very little DC voltage drop can be tolerated when a 3 ...
Page 6
... MPC952 –T– DETAIL –Z– –AB– SEATING –AC– PLANE 0.10 (0.004 DETAIL AD MOTOROLA OUTLINE DIMENSIONS FA SUFFIX TQFP PACKAGE CASE 873A-02 ISSUE A 4X 0.20 (0.008) AB T–U Z –U– 0.20 (0.008) AC T–U Z DETAIL AD BASE METAL N É É É É ...
Page 7
... Motorola, Inc. Motorola, Inc Equal Mfax is a trademark of Motorola, Inc. JAPAN: Nippon Motorola Ltd.: SPD, Strategic Planning Office, 141, 4–32–1 Nishi–Gotanda, Shagawa–ku, Tokyo, Japan. 03–5487–8488 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 7 MPC952 MPC952/D MOTOROLA ...