EPM2210 Altera Corporation, EPM2210 Datasheet - Page 50

• Manufacturer Part Number: EPM2210
• Description: (EPMxxxx) JTAG & In-System Programmability
• Manufacturer: Altera Corporation

In System Programmability
Figure 3–1. MAX II JTAG Translator as General-Purpose Flash Loader
Notes to
(1)
(2)
In System
Programmability
3–4
MAX II Device Handbook, Volume 1
This block is implemented in LEs.
This function will be supported in a future version of the Quartus II software.
Figure
3–1:
Memory Device
Flash
DQ[7..0]
A[20..0]
RY/BY
WE
OE
CE
Parallel Flash Loader
The JTAG translator ability to interface JTAG to non-JTAG devices is ideal
for general-purpose flash memory devices (such as Intel or Fujitsu based
devices) that require programming during in-circuit test. The flash
memory devices can be used for FPGA configuration or be part of system
memory. In many cases, the MAX II device is already connected to these
devices as the configuration control logic between the FPGA and the flash
device. Unlike ISP-capable CPLD devices, bulk flash devices do not have
JTAG TAP pins or connections. For small flash devices, it is common to
use the serial JTAG scan chain of a connected device to program the non-
JTAG flash device. This is slow and inefficient in most cases and
impractical for large parallel flash devices. Using the MAX II device’s
JTAG translator as a parallel flash loader to program and verify flash
contents provides a fast and cost-effective means of in-circuit
programming during test.
parallel flash loader.
MAX II devices can be programmed in-system via the industry standard
4-pin IEEE Std. 1149.1 (JTAG) interface. In system programmability (ISP)
offers quick, efficient iterations during design development and
TMS
TDO
TCK
TDI
Core Version a.b.c variable
RUNIDLE_U
UPDATE_U
CLKDR_U
USER1_U
SHIFT_U
TDO_U
TMS_U
TCK_U
TDI_U
Figure 3–1
MAX II Device
shows MAX II being used as a
Flash Loader
DQ[7..0]
A[20..0]
OE
WE
CE
RY/BY
General-
Purpose
(1), (2)
Logic
Altera Corporation
December 2004