15
POWR607/6AT6 Evaluation Board
JTAG Interface Circuits
For power and programming, an FTDI USB UART/FIFO IC converter provides a communication interface between
a PC host and the JTAG programming chain of the POWR607 board. The USB 5 V supply is also used as a source
for the 3.3 V and 1.8 V supply rails. A USB B-type mini socket is provided for the USB connector cable.
The evaluation board can be modified to use a JTAG cable for programming. See
Adding Support for a JTAG Cable
in the
Modifying the POWR607/6AT6 Evaluation Board
section for more information.
Table 7. JTAG Interface Reference
Table 8. JTAG Programming Pin Information
LEDs
Five red LEDs (D2-D6) are used to reflect I/O’s of the preprogrammed processor support demo. Three of the five
LEDs are connected to DIP switch inputs. The LEDs are located in the center of the board, next to the expansion
header. You may use D2-D6 for user-defined outputs for your own custom POWR607 designs.
A blue LED (POWR - D1) is used to indicate USB 5 V power. An amber LED (D11) is used to indicate interrupt
events asserted by the POWR607.
Table 9. User LEDs Reference
Table 10. LED Pin Information
Item
Description
Reference Designators
U8
Part Number
FT2232H
Manufacturer
FTDI (Future)
Web Site
www.ftdichip.com
Signal Name
Description
POWR607 Pin
POWR6AT6
TDO
Test Data Output
11:TDO
4:TDI
PM_TDO
Test Data Output
—
1:TDO
PM_TDI
Test Data Input
13:TDI
—
TMS_605
Test Mode Select
14:TMS
—
TMS_6AT6
Test Mode Select
—
5:TMS
PM_TCK
Test Clock
12:TCK
3:TCK
Item
Description
Reference Designators
D2-D6
Part Number
LTST-C190CKT
Manufacturer
Lite-On
Web Site
www.liteonit.com
Signal Name
Description (Processor Support Demo)
POWR607 Pin
D6
IO_5, Watchdog Delay SEL1 input
15
D5
IO_4, Watchdog Delay SEL0 input
17
D4
IO_3, Reset Pulse Stretch enable input
18
D3
IO_2, Watchdog timer interrupt (WDT_Intr) output
19
D2
IO_1, CPU Reset or Power Fail output
20
D1
USB 5 V Power
na
D11
Watchdog Timer Pulse
na
