Chapter 3
Qixis Programming Model
The system controller CPLD contains many registers which may be used to monitor and control both the processor and hardware
on the RDB. A 3-pin header on the system allows remote monitoring/control of the system, or the processor can access these
registers itself using I2C port 1, using the standard address of 0x66. This address and the register layout adheres to the QixMin
(minimal Qixis) standards, allowing easier code reuse across platforms. This chapter explains each of the registers in the register
block.
This table shows the register memory map for Qixis.
Table 30. Qixis Register Memory Map
Offset Register
Width
(In bits)
Access Reset value
000h
Identification (ID) 8 RO 01000010b
001h
Board Version (VER) 8 RO 00010001b
002h
Qixis Version (QVER) 8 RO 00000001b
003h
Programming Model (MODEL) 8 RO 01000000b
004h
Minor Revision (MINOR) 8 RW 00000101b
005h
General Control (CTL) 8 RW 00000x00b
006h
Auxiliary (AUX) 8 RW 00000000b
009h
System Status (STAT_SYS) 8 RO 000x0000b
00Ah
Alarm (ALARM) 8 RO 10000010b
00Bh
Presence Detect 1 (STAT_PRES1) 8 RO 00101101b
00Ch
Presence Detect 2 (STAT_PRES2) 8 RO 11111111b
00Eh
LED Control (LED) 8 RW 00000000b
010h
Reconfiguration Control (RCFG) 8 RW 0010x00xb
018h
SFP CSR 1 (SFP1) 8 RW 10000000b
019h
SFP CSR 2 (SFP2) 8 RW 10110000b
01Ah
SFP CSR 3 (SFP3) 8 RW 10110000b
01Dh
LOS Status (LOS) 8 RO 00000000b
01Fh
Watchdog (WATCH) 8 RW 00011111b
Table continues on the next page...
NXP Semiconductors
QorIQ LX2160A Reference Design Board Reference Manual, Rev. 4, 07/2020
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