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MPC8544E 数据表(PDF) 91 Page - Freescale Semiconductor, Inc |
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MPC8544E 数据表(HTML) 91 Page - Freescale Semiconductor, Inc |
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91 / 117 page ![]() MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 5 Freescale Semiconductor 91 Package Description AVDD_SRDS W28 Power for SRDSPLL (1.0 V) —19 AVDD_SRDS2 AG1 Power for SRDSPLL (1.0 V) —19 SENSEVDD W11 O VDD 12 SENSEVSS W10 — — 12 Analog Signals MVREF A28 Reference voltage signal for DDR MVREF — SD1_IMP_CAL_RX M26 — 200 Ω to GND — SD1_IMP_CAL_TX AE28 — 100 Ω to GND — SD1_PLL_TPA V26 — AVDD_SRDS ANALOG 17 SD2_IMP_CAL_RX AH3 I 200 Ω to GND — SD2_IMP_CAL_TX Y1 I 100 Ω to GND — SD2_PLL_TPA AH1 O AVDD_SRDS2 ANALOG 17 No Connect Pins NC C19, D7, D10, K13, L6, K9, B6, F12, J7, M19, M25, N19, N24, P19, R19, AB19, T12, W3, M12, W5, P12, T19, W1, W7, L13, U19, W4, V8, V9, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, W2, W6, W8, T11, U11, W12, W13, W14, W15, W16, W17, W18, W19, W27, V25, Y17, Y18, Y19, AA18, AA19, AB20, AB21, AB22, AB23, J9 —— — Notes: 1.All multiplexed signals are listed only once and do not re-occur. For example, LCS5/DMA_REQ2 is listed only once in the Local Bus Controller Interface section, and is not mentioned in the DMA section even though the pin also functions as DMA_REQ2. 2.Recommend a weak pull-up resistor (2–10 K Ω) be placed on this pin to OV DD. 3.This pin must always be pulled high. 4.This pin is a reset configuration pin. It has a weak internal pull-up P-FET which is enabled only when the processor is in the reset state. This pull-up is designed such that it can be overpowered by an external 4.7-k Ω pull-down resistor. However, if the signal is intended to be high after reset, and if there is any device on the net which might pull down the value of the net at reset, then a pull-up or active driver is needed. TSEC3_TXD[3] (cfg_srds_sgmii_refclk) is an exception, because the default value of this configuration signal is low (0). Thus, no external pull-down resistor is needed for selecting the default configuration value. 5. Treat these pins as no connects (NC) unless using debug address functionality. Table 62. MPC8544E Pinout Listing (continued) Signal Package Pin Number Pin Type Power Supply Notes |
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