hi-6131pqtf QuickLogic Corp, hi-6131pqtf Datasheet - Page 39

• Manufacturer Part Number: hi-6131pqtf
• Description: Mil-std-1553 / Mil-std-1760 3.3v Bc / Mt / Rt Multi-terminal Device
• Manufacturer: QuickLogic Corp

Bit No.
14
Mnemonic
EECKE
RAMERR
R/W
R/W
Reset
1
HOLT INTEGRATED CIRCUITS
Function
EEPROM Checksum Error Interrupt.
This function only applies when the RAMEDC input pin is logic 0 and
the AUTOEN input pin is logic 1 at rising edge of MR Master Reset. This
enables auto-initialization from serial EEPROM, as well as RT or MT soft
reset with auto-initialization. This bit is logic 1 in the Hardware Interrupt
Enable Register and in the Hardware Interrupt Output Enable Register
after MR master reset.
The EECKE bit is set in the Hardware Pending Interrupt Register (as
well as bit 1 in the Master Status and Reset Register, 0x0001) when
a serial EEPROM checksum failure occurs during auto initialization,
or execution of a partial reset caused by assertion of the RT1RESET,
RT2RESET or MTRESET bits in the Master Status and Reset Register,
0x0001.
Register bit 14 has a secondary function when input pin RAMEDC is
connected to logic 1. When the RAMEDC pin is high, the available
RAM address space is reduced from 32K words to 24K words, but error
detection and correction (EDC) is performed after every RAM address
read cycle.
Detected and Corrected 24K RAM Error.
This function only applies when the device RAMEDC input pin is
connected high, configuring the device for 24K RAM with EDC enabled.
Single-bit errors are automatically corrected by the device, but multiple-
bit errors are not correctable.
When a single-bit RAM data error is detected and corrected, register bit
14 is set to logic 1. The EECKE bit 1 in register 0x0001 is also cleared.
When bit 14 is asserted in the Hardware Pending Interrupt Register
0x0009, the host can distinguish an EECKE interrupt from a RAMERR
interrupt by reading the Master Status and Reset Register 0x0001.
EECKE bit 1 in that register will be logic 1 for EECKE interrupt, logic 0
for CRAMERR interrupt.
HI-6130, HI-6131
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