EP1M350 datasheet(65/86 Pages) ALTERA

65 / 86 page

Altera Corporation

Mercury Programmable Logic Device Family Data Sheet

The Mercury device instruction register length is 10 bits. The Mercury

device USERCODE register length is 32 bits. Tables 17 and 18 show the

boundary-scan register length and device IDCODE information for

Mercury devices.

Notes to Table 18:

(1)

The most significant bit (MSB) is on the left.

(2)

The IDCODE’s least significant bit (LSB) is always 1.

Table 16. Mercury JTAG Instructions

JTAG Instruction

Description

SAMPLE/PRELOAD Allows a snapshot of signals at the device pins to be captured and examined during

normal device operation and permits an initial data pattern to be output at the device pins.

Also used by the SignalTap embedded logic analyzer.

EXTEST

Allows the external circuitry and board-level interconnections to be tested by forcing a test

pattern at the output pins and capturing test results at the input pins.

BYPASS

Places the 1-bit bypass register between the TDI and TDO pins, which allows the BST data

to pass synchronously through selected devices to adjacent devices during normal device

operation.

USERCODE

Selects the 32-bit USERCODE register and places it between the TDI and TDO pins,

allowing the USERCODE to be serially shifted out of TDO.

IDCODE

Selects the IDCODE register and places it between TDI and TDO, allowing the IDCODE

to be serially shifted out of TDO.

ICR Instructions

These instructions are used when configuring a Mercury device via the JTAG port with a

ByteBlasterMVTM download cable, or using a Jam STAPL or Jam Byte-Code file via an

embedded processor.

SignalTap

Instructions

These instructions monitor internal device operation with the SignalTap embedded logic

analyzer.

Table 17. Mercury Boundary-Scan Register Length

Device

Boundary-Scan Register Length (Bits)

EP1M120

1,125

EP1M350

1,695

Table 18. 32-Bit Mercury Device IDCODE

Device

IDCODE (32 Bits) (1)

Version

(4 Bits)

Part Number (16 Bits)

Manufacturer Identity

(11 Bits)

1 (1 Bit) (2)

EP1M120

0000

0011 0000 0000 0000

000 0110 1110

EP1M350

0000

0011 0000 0000 0001

000 0110 1110

EP1M350 Datasheet(PDF) 65 Page - Altera Corporation

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