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SM320C6701S16 Datasheet(PDF) 8 Page - Texas Instruments |
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SM320C6701S16 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 64 page SMJ320C6701 FLOATINGPOINT DIGITAL SIGNAL PROCESSOR SGUS030B – APRIL 2000 – REVISED MAY 2001 8 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 Signal Descriptions SIGNAL TYPE† DESCRIPTION NAME NO. TYPE† DESCRIPTION CLOCK/PLL CLKIN A14 I Clock Input CLKOUT1 Y6 O Clock output at full device speed CLKOUT2 V9 O Clock output at half of device speed CLKMODE1 B17 I Clock mode select CLKMODE0 C17 I • Selects whether the output clock frequency = input clock freq x4 or x1 PLLFREQ3 C13 PLL frequency range (3, 2, and 1) PLLFREQ2 G11 I • The target range for CLKOUT1 frequency is determined by the 3-bit value of the PLLFREQ pins. PLLFREQ1 F11 I PLLV‡ D12 A§ PLL analog VCC connection for the low-pass filter PLLG‡ G10 A§ PLL analog GND connection for the low-pass filter PLLF C12 A§ PLL low-pass filter connection to external components and a bypass capacitor JTAG EMULATION TMS K19 I JTAG test port mode select (features an internal pull-up) TDO R12 O/Z JTAG test port data out TDI R13 I JTAG test port data in (features an internal pull-up) TCK M20 I JTAG test port clock TRST N18 I JTAG test port reset (features an internal pull-down) EMU1 R20 I/O/Z Emulation pin 1, pull-up with a dedicated 20-k Ω resistor¶ EMU0 T18 I/O/Z Emulation pin 0, pull-up with a dedicated 20-k Ω resistor¶ RESET AND INTERRUPTS RESET J20 I Device reset NMI K21 I Nonmaskable interrupt • Edge-driven (rising edge) EXT_INT7 R16 EXT_INT6 P20 I External interrupts EXT_INT5 R15 I External interru ts • Edge-driven (rising edge) EXT_INT4 R18 gg g IACK R11 O Interrupt acknowledge for all active interrupts serviced by the CPU INUM3 T19 INUM2 T20 O Active interrupt identification number • Valid during IACK for all active interrupts (not just external) INUM1 T14 O • Valid during IACK for all active interrupts (not just external) • Encoding order follows the interrupt service fetch packet ordering INUM0 T16 • Encoding order follows the interru t service fetch acket ordering LITTLE ENDIAN/BIG ENDIAN LENDIAN G20 I If high, selects little-endian byte/half-word addressing order within a word If low, selects big-endian addressing POWER DOWN STATUS PD D19 O Power-down mode 2 or 3 (active if high) † I = Input, O = Output, Z = High Impedance, S = Supply Voltage, GND = Ground ‡ PLLV and PLLG signals are not part of external voltage supply or ground. See the CLOCK/PLL documentation for information on how to connect those pins. § A = Analog Signal (PLL Filter) ¶ For emulation and normal operation, pull up EMU1 and EMU0 with a dedicated 20-k Ω resistor. For boundary scan, pull down EMU1 and EMU0 with a dedicated 20-k Ω resistor. |
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