Texas Instruments SM320C6455-EP manual Terminal Functions, Signal, Jtag Emulation

SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

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SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

2.7Terminal Functions

The terminal functions table (Table 2-3) identifies the external signal names, the associated pin (ball) numbers along with the mechanical package designator, the pin type (I, O/Z, or I/O/Z), whether the pin has any internal pullup/pulldown resistors, and a functional pin description. For more detailed information on device configuration, peripheral selection, multiplexed/shared pins, and pullup/pulldown resistors, see Section 3, Device Configuration.

Table 2-3. Terminal Functions

SIGNAL		TYPE(1)	IPD/IPU(2)	DESCRIPTION
NAME	NO.
			CLOCK/PLL CONFIGURATIONS
CLKIN1	N28	I	IPD	Clock Input for PLL1.
CLKIN2	G3	I	IPD	Clock Input for PLL2.
PLLV1	T29	A		1.8-V I/O supply voltage for PLL1
PLLV2	A5	A		1.8-V I/O supply voltage for PLL2
SYSCLK4/GP[1](3)	AJ13	I/O/Z	IPD	SYSCLK4 is the clock output at 1/8 of the device speed (O/Z) or this pin can be
				programmed as the GP1 pin (I/O/Z) [default].
				JTAG EMULATION
TMS	AJ10	I	IPU	JTAG test-port mode select
TDO	AH8	O/Z	IPU	JTAG test-port data out
TDI	AH9	I	IPU	JTAG test-port data in
TCK	AJ9	I	IPU	JTAG test-port clock
TRST	AH7	I	IPD	JTAG test-port reset. For IEEE 1149.1 JTAG compatibility, see the IEEE
				1149.1 JTAG compatibility statement portion of this document.
EMU0(4)	AF7	I/O/Z	IPU	Emulation pin 0
EMU1(4)	AE11	I/O/Z	IPU	Emulation pin 1
EMU2	AG9	I/O/Z	IPU	Emulation pin 2
EMU3	AF10	I/O/Z	IPU	Emulation pin 3
EMU4	AF9	I/O/Z	IPU	Emulation pin 4
EMU5	AE12	I/O/Z	IPU	Emulation pin 5
EMU6	AG8	I/O/Z	IPU	Emulation pin 6
EMU7	AF12	I/O/Z	IPU	Emulation pin 7
EMU8	AF11	I/O/Z	IPU	Emulation pin 8
EMU9	AH13	I/O/Z	IPU	Emulation pin 9
EMU10	AD10	I/O/Z	IPU	Emulation pin 10
EMU11	AD12	I/O/Z	IPU	Emulation pin 11
EMU12	AE10	I/O/Z	IPU	Emulation pin 12
EMU13	AD8	I/O/Z	IPU	Emulation pin 13
EMU14	AF13	I/O/Z	IPU	Emulation pin 14
EMU15	AE9	I/O/Z	IPU	Emulation pin 15
EMU16	AH12	I/O/Z	IPU	Emulation pin 16
EMU17	AH10	I/O/Z	IPU	Emulation pin 17
EMU18	AE13	I/O/Z	IPU	Emulation pin 18

(1)I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)IPD = Internal pulldown, IPU = Internal pullup. For most systems, a 1-kΩresistor can be used to oppose the IPU/IPD. For more detailed information on pullup/pulldown resistors and situations where external pullup/pulldown resistors are required, see Section 3.7, Pullup/Pulldown Resistors.

(3)These pins are multiplexed pins. For more details, see Section 3, Device Configuration.

(4)The C6455 DSP does not require external pulldown resistors on the EMU0 and EMU1 pins for normal or boundary-scan operation.

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