Getting Responce 0x01 from Iridium SLB9670 TPM 2.0 Chip with NXP5748G DEVKIT

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User16017
Level 1
Level 1
Hardware Setup:
Infineon Iridium SLB 9670 TPM 2.0 interface with NXP MPC5748G via SPI
Software Setup:
S32 IDE with FreeRTOS

we have connected NXP MPC5748G as a master and Iridium SLB 9670 TPM 2.0 as a slave.
Connection are as below mentioned:

NXP MPC5748G Iridium SLB 9670 PIN
MOSI 19
MISO 21
CLK 23
Chip selc 26
Vcc (3.3 V) 1
GND 6

SPI specification:
1. Baudrate 5000000
2. Mode 0

But we are facing following problems.
1. We are not getting response as TPM_ACCESS_VALID(0x80) from SLB9670 in Startup-wait implementation
2. Not getting vendor id for command TPM_DID_VID( 83 D4 0F 00 00 00 00 00 )

Could you please share your comment on the above issues.
Thanks in advance.
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1 Reply
User16149
Level 1
Level 1
Distributor - Avnet(GC)
Welcome! First reply posted
Hi Yogeshry,
I have the same issue as yours.
I have connected NXP LS1043ARDB with Iridium SLB9670 in ubuntu16.04
and can't get response 0x80 from TPM.
if you have any solutions for it , please let me know.
Thanks.
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