Altera Cyclone IV - IEEE Std. 1149.6 Boundary-Scan Register

10–2 Chapter 10: JTAG Boundary-Scan Testing for Cyclone IV Devices
IEEE Std. 1149.6 Boundary-Scan Register
Cyclone IV Device Handbook, December 2013 Altera Corporation
Volume 1
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
MEM_INIT
SDIN SHIFT
0
1
0
1
DQ
DQ
CLK
SDOUT
UPDATE
MODE
AC_TEST
Capture Update
Registers
BSTX1
Pad
Pad
Tx Output
Buffer
0
1
DQ
DQ
DQ
DQ
HIGHZ
BSCAN PMA
0
1
0
1
0
1
BS0EB
M0 RHZ
OE Logic
BSTX0
OE
OE
nOE
Mission
(DATAOUT)
AC JTAG
Output
Buffer
AC JTAG
Output
Buffer
AC_MODE