MPC8540 datasheet(1102/1302 Pages) FREESCALE

1102 / 1302 page

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

19-24

Freescale Semiconductor

Performance Monitor

Data beats

C7:48

—

Read data beats

C8:46

—

Rx frame interrupts

C1:49

Times receive frame interrupt is set. Event occurs when the

BD receive interrupt is set on a last BD

Tx frame interrupts

C3:53

Times a transmit frame interrupt is set. Event occurs when

the BD transmit interrupt is set on a BD with L = 1

Rx frame processing

(duration threshold)

Ref:46

Times frame processing exceeds threshold (threshold

event)

Start: open first BD

Stop: close last BD

TSEC2 Address Data Filtering (ADF) Events

Accepted frames

Ref:50

—

Individual hash table accepted frame

C7:36

—

Group hash table accepted frame

C8:36

—

Rejected frames

Ref:53

—

Dropped frames

Ref:52

Dropped frames that could have been accepted (data

overflow, status overflow and acknowledgement of BDs)

Dropped frames due to data overflow

C1:42

Frames dropped because of overflow in the FIFO and

256-byte buffer

Dropped frames due to status overflow

C2:51

Frames dropped because of inability to write status for one

frame and a new frame starts

TSEC2 FIFO Events

Receive FIFO data valid

C1:46

Receive FIFO contains receive data

Transmit frames without threshold

C7:45

Transmit frames that do not hit Tx FIFO threshold

Receive FIFO above 1/4

Ref:61

—

Receive FIFO above 1/2

Ref:62

—

Receive FIFO above 3/4

Ref:63

—

TSEC2 DMA Events

DMA reads

C1:48

Descriptor and data reads

BD reads

C2:55

Transmit and RxBD reads

RxBD reads

C3:52

Times that RxBD reads (transmit number can be calculated

by subtracting this number from total)

DMA writes

C4:53

Descriptor and data writes

BD writes

C5:47

Times that TxBDs and RxBDs closed

RxBD writes

C6:50

Times RxBDs closed (transmit number can be calculated

by subtracting this number from total)

Table 19-10. Performance Monitor Events (continued)

Event Counted

Number

Description of Event Counted

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