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DS1035 Pinout Information_01.7

January 3013

Data Sheet DS1035

or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice.

Signal Descriptions

Signal Name

I/O

Descriptions

General Purpose

P[Edge] [Row/Column

Number]_[A/B/C/D]

I/O

[Edge] indicates the edge of the device on which the pad is located. Valid edge designations

are L (Left), B (Bottom), R (Right), T (Top).

[Row/Column Number] indicates the PFU row or the column of the device on which the PIO

Group exists. When Edge is T (Top) or (Bottom), only need to specify Row Number. When

Edge is L (Left) or R (Right), only need to specify Column Number.

[A/B/C/D] indicates the PIO within the group to which the pad is connected.

Some of these user-programmable pins are shared with special function pins. When not used

as special function pins, these pins can be programmed as I/Os for user logic.

During configuration of the user-programmable I/Os, the user has an option to tri-state the



I/Os and enable an internal pull-up, pull-down or buskeeper resistor. This option also applies

to unused pins (or those not bonded to a package pin). The default during configuration is for

user-programmable I/Os to be tri-stated with an internal pull-down resistor enabled. When the

device is erased, I/Os will be tri-stated with an internal pull-down resistor enabled. Some pins,

such as PROGRAMN and JTAG pins, default to tri-stated I/Os with pull-up resistors enabled

when the device is erased.

—

No connect.

GND

—

GND – Ground. Dedicated pins. It is recommended that all GNDs are tied together.

VCC

—

VCC – The power supply pins for core logic. Dedicated pins. It is recommended that all VCCs

are tied to the same supply.

VCCIOx

—

VCCIO – The power supply pins for I/O Bank x. Dedicated pins. It is recommended that all

VCCIOs located in the same bank are tied to the same supply.

PLL and Clock Functions (Used as user-programmable I/O pins when not used for PLL or clock pins)

[LOC]_GPLL[T, C]_IN

—

Reference Clock (PLL) input pads: [LOC] indicates location. Valid designations are L (Left

PLL) and R (Right PLL). T = true and C = complement.

[LOC]_GPLL[T, C]_FB

—

Optional Feedback (PLL) input pads: [LOC] indicates location. Valid designations are L (Left

PLL) and R (Right PLL). T = true and C = complement.

PCLK [n]_[2:0]

—

Primary Clock pads. One to three clock pads per side.

Test and Programming (Dual function pins used for test access port and during sysCONFIG™)

TMS

Test Mode Select input pin, used to control the 1149.1 state machine.

TCK

Test Clock input pin, used to clock the 1149.1 state machine.

TDI

Test Data input pin, used to load data into the device using an 1149.1 state machine.

TDO

Output pin – Test Data output pin used to shift data out of the device using 1149.1.

JTAGENB

Optionally controls behavior of TDI, TDO, TMS, TCK. If the device is configured to use the

JTAG pins (TDI, TDO, TMS, TCK) as general purpose I/O, then:

If JTAGENB is low: TDI, TDO, TMS and TCK can function a general purpose I/O.

If JTAGENB is high: TDI, TDO, TMS and TCK function as JTAG pins.

For more details, refer to TN1204, MachXO2 Programming and Configuration Usage Guide.

Configuration (Dual function pins used during sysCONFIG)

PROGRAMN

Initiates configuration sequence when asserted low. This pin always has an active pull-up.

INITN

I/O

Open Drain pin. Indicates the FPGA is ready to be configured. During configuration, a pull-up

is enabled.

MachXO2 Family Data Sheet

Pinout Information

LCMXO2-256ZE-3UMG64C 数据表(PDF) 77 Page - Lattice Semiconductor

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