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5962-9052605MXA Datasheet(PDF) 9 Page - Texas Instruments |
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5962-9052605MXA Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 47 page  SMJ320C30 DIGITAL SIGNAL PROCESSOR SGUS014H − FEBRUARY 1991 − REVISED JUNE 2004 9 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 Pin Functions (Continued) PIN TYPE† DESCRIPTION CONDITIONS WHEN NAME QTY‡ TYPE† DESCRIPTION WHEN SIGNAL IS Z TYPE§ SUPPLY AND OSCILLATOR SIGNALS (see Note 1) (CONTINUED) IVSS 1 I Ground VBBP 1 NC VBB pump oscillator output VSUBS 1 I Substrate pin. Tie to ground X1 1 O Output from the internal oscillator for the crystal. If a crystal is not used, X1 must be left unconnected. X2 / CLKIN 1 I Input to the internal oscillator from the crystal or a clock H1 1 O/Z External H1 clock. H1 has a period equal to twice CLKIN. S H3 1 O/Z External H3 clock. H3 has a period equal to twice CLKIN. S RESERVED (see Note 2) EMU0 − EMU2 3 I Reserved. Use pullup resistors to 5 V EMU3 1 O/Z Reserved S EMU4 / SHZ 1 I Shutdown high impedance. When active, EMU4 / SHZ shuts down the SMJ320C30 and places all pins in the high-impedance state. EMU4 / SHZ is used for board-level testing to ensure that no dual-drive conditions occur. CAUTION: A low on SHZ corrupts SMJ320C30 memory and register contents. Reset the device with SHZ high to restore it to a known operating condition. EMU5, EMU6 2 NC Reserved RSV0 − RSV4 5 I Reserved. Tie pins directly to 5 V RSV5 − RSV10 6 I/O Reserved. Use pullups on each pin to 5 V Locator 1 NC Reserved † I = input, O = output, Z = high-impedance state, NC = No Connect ‡ For GB package § S = SHZ active, H = HOLD active, R = RESET active NOTES: 1. CVSS, VSS, IVSS are on the same plane. 2. The connections specified for the reserved pins must be followed. For best results, 18-k Ω−22-kΩ pullup resistors are recommended. All 5-V supply pins must be connected to a common supply plane, and all ground pins must be connected to a common ground plane. |
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