SPRS292A − OCTOBER 2005 − REVISED NOVEMBER 2005
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| Terminal Functions |
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| SIGNAL | NO. | TYPE† | IPD/ |
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| DESCRIPTION | |
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| NAME | GDP/ | IPU‡ |
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| ZDP |
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| CLOCK/PLL |
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| CLKIN | A3 | I | IPD | Clock Input | |||
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| For this device, the CLKOUT2 pin is multiplexed with the GP[2] pin. | ||
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| Clock output at half of device speed (O/Z) [default] (SYSCLK2 internal signal from the clock | ||
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| generator) or this pin can be programmed as GP[2] (I/O/Z). | ||
| CLKOUT2 | Y12 | O/Z | IPD |
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| (/GP0[2]) | When the CLKOUT2 pin is enabled, the CLK2EN bit in the EMIF global control register | ||||||
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| (GBLCTL) controls the CLKOUT2 pin (All devices). | ||
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| CLK2EN = 0: CLKOUT2 is disabled | ||
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| CLK2EN = 1: CLKOUT2 enabled to clock [default] | ||
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| CLKOUT3 | D10 | O | IPD | Clock output programmable by OSCDIV1 register in the PLL controller. | |||
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| Clock generator input clock source select | ||
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| 0 | − | Reserved. Do not use. |
| CLKMODE0 | C4 | I | IPU | 1 | − | CLKIN square wave [default] | |
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| For proper device operation, this pin must be either left unconnected or externally pulled up with | ||
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| a | ||
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| PLLHV | C5 | A |
| Analog power (3.3 V) for PLL | |||
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| JTAG EMULATION |
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| TMS | B7 | I | IPU | JTAG | |||
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| TDO | A8 | O/Z | IPU | JTAG | |||
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| TDI | A7 | I | IPU | JTAG | |||
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| TCK | A6 | I | IPU | JTAG | |||
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| JTAG | ||
| TRST§ | B6 | I | IPD | ||||
| JTAG Compatibility Statement section of this data sheet. | |||||||
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| EMU5 | B12 | I/O/Z | IPU | Emulation pin 5. Reserved for future use, leave unconnected. | |||
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| EMU4 | C11 | I/O/Z | IPU | Emulation pin 4. Reserved for future use, leave unconnected. | |||
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| EMU3 | B10 | I/O/Z | IPU | Emulation pin 3. Reserved for future use, leave unconnected. |
†I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal (PLL Filter)
‡IPD = Internal pulldown, IPU = Internal pullup. [To oppose the supply rail on these IPD/IPU signal pins, use external pullup or pulldown resistors no greater than 4.4 kΩ and 2.0 kΩ, respectively.]
§To ensure a proper logic level during reset when these pins are both routed out and 3−stated or not driven, it is recommended an external
24 | POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 |