Vol. 3C 36-51

INTEL® PROCESSOR TRACE

36.4.2.13   TSC/MTC Alignment (TMA) Packet

Table 36-32. TMA Packet Definition

Name

TSC/MTC Alignment (TMA) Packet

Packet Format

Dependencies

IA32_RTIT_CTL.MTCEn && 

IA32_RTIT_CTL.TSCEn && TriggerEn

Generation Sce-

nario

Sent with any TSC packet.

Description

The TMA packet serves to provide the information needed to allow the decoder to correlate MTC packets with TSC 

packets. With this packet, when a MTC packet is encountered, the decoder can determine how many timestamp 

counter ticks have passed since the last TSC or MTC packet. See Section 36.8.3.2 for details on how to make this cal-

culation.

Application

TMA is always sent immediately following a TSC packet, and the payload values are consistent with the TSC payload 

value. Thus the application of TMA matches that of TSC.

7

6

5

4

3

2

1

0

0

0

0

0

0

0

0

1

0

1

0

1

1

1

0

0

1

1

2

CTC[7:0]

3

CTC[15:8]

4

Reserved

0

5

FastCounter[7:0]

6

Reserved

FC[8]