Hi All,
I recently inherited a LinksysWRT1900ac v1 from a family member with the explanation that it just doesn't work. I cracked it open and connected my TTL cable to it, but cannot get to complete boot up with the message that DDR3 training sequence failed. Is this thing fixable, or should I just harvet whatever parts I can recover? Output below.
BootROM 1.20
Booting from NAND flash
Step 1: First phase of PEX-PIPE Configuration
Step 2: Configure the desire PIN_PHY_GEN
Step 3 QSGMII enable
Step 4: Configure SERDES MUXes
Step 5: Activate the RX High Impedance Mode
Step 6: [PEX-Only] PEX-Main configuration (X4 or X1)
Step 6.2: [PEX-Only] PCI Express Link Capabilities
Step 7: [PEX-X4 Only] To create PEX-Link
Steps 7,8,9,10 and 11
Steps 12: [PEX-Only] Last phase of PEX-PIPE ConfigurationSteps 13: Wait 15ms bef ore checking resultsSteps 14: [PEX-Only] In order to configureSteps 15: [PEX-On ly] In order to configureSteps 16: [PEX-Only] Training Enablestep 17: max_if= 0 x7
step 17: PEX0 pexUnit= 0
** Link is Gen1, check the EP capability
--> 0050
mvPexConfigRead: return addr=0x%x0050
--> 7001
--> 7001
--> A005
--> A005
--> 0010
--> 4C12
Gen2 client!
step 17: PEX1 pexUnit= 0
step 17: PEX2 pexUnit= 0
** Link is Gen1, check the EP capability
--> 0040
mvPexConfigRead: return addr=0x%x0040
--> 5001
--> 5001
--> 7005
--> 7005
--> 0010
--> DC12
Gen2 client!
step 17: PEX3 pexUnit= 0
PEX3 : Detected No Link. Status Reg(0x0004DA64) = 0x00000001
step 17: PEX4 pexUnit= 1
PEX4 : Detected No Link. Status Reg(0x00081A64) = 0x00000001
step 17: PEX5 pexUnit= 1
PEX5 : Detected No Link. Status Reg(0x00085A64) = 0x00000001
step 17: PEX6 pexUnit= 1
PEX6 : Detected No Link. Status Reg(0x00089A64) = 0x00000001
DDR3 Training Sequen ce - Ver 4.5.DDR3 Training Sequence - Static MC Init
DDR3 Training Sequence - HW Training Procedure
DDR3 Training Sequence - FAILED (Write Leveling Hi-Freq Sup)
DDR3 Training Sequence - FAILED