hi-6131pqtf QuickLogic Corp, hi-6131pqtf Datasheet - Page 106

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

register 0x003B while register 0x003A contains bits 15-0.
The host cannot directly write these registers but uses other methods to control or read Time Tag count. By writing bits
15-14 in the Time Tag Counter Configuration Register 0x0039, the host can clear time tag count to zero, copy the cur-
rent time count to the SMT Time Tag Utility Register(s), or load the current value contained in the SMT Time Tag Utility
Register(s) into the SMT Time Tag counter(s). Finally, the SMT Time Tag Match Register(s) provide capability for host
interrupts when the time tag count reaches any predetermined 16- or 48-bit value. For further information, refer to the
description of the Time Tag Counter Configuration Register 0x0039.
13.8. SMT Bus Monitor Time Tag Utility Register (0x003D)
When MT Configuration Register bits 1-0 equal 11, the Simple Message Monitor operates with 16-bit Time Tag
resolution and register 0x003D is the only Time Tag Utility register needed.
When MT Configuration Register bits 1-0 equal 01, the Simple Message Monitor operates with 48-bit Time Tag
resolution and “utility” operations require the above register plus two additional registers:
13.9. SMT Bus Monitor Time Tag Utility Mid Register (0x003E)
13.10. SMT Bus Monitor Time Tag Utility High Register (0x003F)
These registers are read-write and are cleared after MR pin Master Reset. This utility register triplet is used for
simultaneously loading or reading a 16- or 48-bit value into or from the SMT Time Tag Counter. Please refer to the
description for bits 15-14 in the Time Tag Counter Configuration Register 0x0039 in Section 9.7.
Loading a 16-bit or 48-bit value into the SMT Time Tag Count Register(s)
When loading or clearing Time Tag count, the 16-bit value in Time Tag Utility Register 0x003D is copied into SMT
Time Tag Count register 0x003A. If configured for 48-bit time stamp operation, count bits 47-17 and count bits 31-16
are simultaneously copied from Time Tag Utility Registers 0x003F and 0x003E into SMT Time Tag Count Registers
0x003C and 0x003B respectively.
MSB
MSB
MSB
15 14 13 12 11 10
15 14 13 12 11 10
15 14 13 12 11 10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register Value
Register Value
Register Value
0
9
0
9
0
9
0
8
0
8
0
8
RW
RW
RW
7
7
7
0
0
0
0
6
0
6
0
6
0
0
0
5
5
5
4
4
4
0
0
0
0
3
0
3
0
3
HOLT INTEGRATED CIRCUITS
0
0
0
2
2
2
HI-6130, HI-6131
0
1
0
1
0
1
LSB
LSB
LSB
0
0
0
0
0
0
MR Reset
Host Access
Bit
MR Reset
Host Access
Bit
MR Reset
Host Access
Bit
106