I'm debugging my designed ADS65J64 board with original Xilinx FPGA(XC7K160T-2FFG676C)
board.
Now, I make sure that JESD204B is running correctly.
ADC mode 8 (DDC Bypass mode).
There is a problem that I don't get ADC test pattern, correctly.
TestPattern mode 1,2,6 are running. I can get correct data.
However, mode 3(toggle), 4(ramp),7,8(custom) are NG as below.
mode3 : AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA
(always all "A")
mode4: 0000 0000 0000 0000 0000 0000 0000 0000
(alwasy all "0")
Pls teach me how to set registers for test pattern.
*** ADC settings
# ----------------
# Hardware reset
# 1ms puls
RESET();
# ----------------
# Pulse a reset (low to high to low) via a hardware reset (pin 48), wait 100 μs
sleep( 0.1 );
# ----------------
# Issue a software reset to initialize the registers
#
RegWrite( 0x0000, 0x81 );
RegWrite( 0x0000, 0x80 );
# ----------------
# Set the high SNR mode for channel pairs AB and CD, select
# trims for 500-MSPS operation
RegWrite( 0x0011, 0x00 );
RegWrite( 0x0012, 0x01 );
RegWrite( 0x0013, 0x00 );
RegWrite( 0x00AB, 0x01 );
RegWrite( 0x00AC, 0x01 );
RegWrite( 0x00AD, 0x08 );
RegWrite( 0x00AE, 0x08 );
RegWrite( 0x0064, 0x02 );
# ----------------
# Set up the SerDes configuration
RegWrite( 0x0011, 0x00 );
RegWrite( 0x0012, 0x60 );
RegWrite( 0x0013, 0x00 );
RegWrite( 0x0025, 0x80 );
RegWrite( 0x0026, 0x0F );
RegWrite( 0x0020, 0x80 );
# ----------------
# ADC calibration
RegWrite( 0x0011, 0xFF );
RegWrite( 0x0012, 0x00 );
RegWrite( 0x0013, 0x00 );
RegWrite( 0x00D5, 0x08 );
time.sleep( 0.005 );
RegWrite( 0x00D5, 0x00 );
RegWrite( 0x002A, 0x00 );
RegWrite( 0x00CF, 0x50 );
# ----------------
# Select trims for the second Nyquist
RegWrite( 0x0011, 0x00 );
RegWrite( 0x0012, 0x1E );
RegWrite( 0x0013, 0x00 );
RegWrite( 0x002D, 0x02 );
# ----------------
# Load linearity trims
RegWrite( 0x0011, 0x00 );
RegWrite( 0x0012, 0x01 );
RegWrite( 0x0013, 0x00 );
RegWrite( 0x008C, 0x02 );
RegWrite( 0x00B7, 0x01 );
RegWrite( 0x00B7, 0x00 );
# ----------------
# Disable SYSREF
#
RegWrite( 0x0011, 0x00 );
RegWrite( 0x0012, 0x00 );
RegWrite( 0x0013, 0x01 );
RegWrite( 0x006F, 0x40 );
RegWrite( 0x006A, 0x02 );
# ----------------
# For debug
# Settings TEST Pattern
#
RegWrite( 0x0011, 0x00 );
RegWrite( 0x0012, 0x01 );
RegWrite( 0x0013, 0x00 );
# Custom Pattern 1
RegWrite( 0x008E, 0xC3 ); # 15:8
RegWrite( 0x008D, 0x96 ); # 7:0
# Custom Pattern 2
RegWrite( 0x0090, 0x5A ); # 15:8
RegWrite( 0x008F, 0xA5 ); # 7:0
# Activate Test Pattern mode
RegWrite( 0x0091, 0x64F );
*** Result of registers readback
---- ADS54J64 DUMP ----
---- DIGTOP PAGE ----
0064h : 02
008Dh : 96
008Eh : C3
008Fh : A5
0090h : 5A
0091h : 4F
00A5h : 00
00A6h : 00
00ABh : 01
00ACh : 01
00ADh : 08
00AEh : 08
00B7h : 00
008Ch : 02
---- ANALOG PAGE ----
006Ah : 02
006Fh : 40
0071h : 00
0072h : 00
0093h : 00
0094h : 00
009Bh : 00
009Dh : 00
009Eh : 00
009Fh : 00
00AFh : 00
---- SERDESXX PAGE ----
0020h : 80
0021h : 01
0022h : 00
0023h : 00
0025h : 80
0026h : 0F
0028h : 00
0036h : 01
0041h : 00
0042h : 00
---- CHX PAGE ----
0026h : 00
0027h : FF
002Dh : F0
0078h : FF
007Ah : FF
007Bh : FF
007Eh : 0F
---- ADCXX PAGE ----
0007h : 02
0008h : 00
00D5h : 00
002Ah : 00
00CFh : 50
--------------------
