EP4CE30F29C7N Datasheet, PDF (258/488 Pages) Altera Corporation – Cyclone IV Device Handbook, Volume 1

10–2
Chapter 10: JTAG Boundary-Scan Testing for Cyclone IV Devices
IEEE Std. 1149.6 Boundary-Scan Register
IEEE Std. 1149.6 Boundary-Scan Register
The boundary-scan cell (BSC) for HSSI transmitters (GXB_TX[p,n]) and receivers
(GXB_RX[p,n]) in Cyclone IV GX devices are different from the BSCs for I/O pins.
Figure 10–1 shows the Cyclone IV GX HSSI transmitter boundary-scan cell.
Figure 10–1. HSSI Transmitter BSC with IEEE Std. 1149.6 BST Circuitry for Cyclone IV GX Devices
BSCAN
PMA
SDOUT
0
DQ
DQ
1
0
BSTX1
1
AC JTAG
Output
Buffer
OE
0
DQ
DQ
1
Mission
(DATAOUT)
0
1
BS0EB
M0 RHZ
OE Logic
0
DQ
DQ
1
0
BSTX0
1
MEM_INIT SDIN SHIFT
CLK
UPDATE HIGHZ ^AC_TEST
MODE
Capture
Update
Registers
AC_MODE
Pad
Tx Output
Buffer
nOE
Pad
OE
AC JTAG
Output
Buffer
Cyclone IV Device Handbook,
Volume 1
December 2013 Altera Corporation