MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 760
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MPC8313ECZQADDC
Manufacturer Part Number
MPC8313ECZQADDC
Description
Microprocessors - MPU 8313 REV2.2 PB ENC EXT
Manufacturer
Freescale Semiconductor
Datasheet
1.MPC8313CZQADDC.pdf
(1214 pages)
Specifications of MPC8313ECZQADDC
Processor Series
MPC8313E
Core
e300
Data Bus Width
16 bit
Maximum Clock Frequency
133 MHz
Program Memory Size
16 KB
Data Ram Size
16 KB
Interface Type
I2C
Mounting Style
SMD/SMT
Package / Case
PBGA
Number Of Programmable I/os
32
Number Of Timers
4
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Offset eTSEC1:0x2_4110; eTSEC2:0x2_5110
Reset
Enhanced Three-Speed Ethernet Controllers
15.5.3.2.4
The TXIC register enables and configures the operational parameters for interrupt coalescing associated
with transmitted frames.
Table 15-18
15-42
11–15
16–31
3–10
Bits
W
0
1
2
R
ICEN ICCS —
0
Name
ICEN
ICCS Interrupt coalescing timer clock source.
ICFT
ICTT
—
—
describes the fields of the TXIC register.
1
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Transmit Interrupt Coalescing Register (TXIC)
Interrupt coalescing enable
0 Interrupt coalescing is disabled. Interrupts are raised as they are received.
1 Interrupt coalescing is enabled. If the eTSEC transmit frame interrupt is enabled (IMASK[TXFEN] is set),
0 The coalescing timer advances count every 64 eTSEC Tx interface clocks (TSEC n _GTX_CLK).
1 The coalescing timer advances count every 64 system clocks. This mode is recommended for FIFO
Reserved
Interrupt coalescing frame count threshold. While interrupt coalescing is enabled (TXIC[ICEN] is set), this
value determines how many frames are transmitted before raising an interrupt. The eTSEC threshold counter
is reset to ICFT following an interrupt. The value of ICFT must be greater than zero to avoid unpredictable
behavior.
Reserved
Interrupt coalescing timer threshold. While interrupt coalescing is enabled (TXIC[ICEN] is set), this value
determines the maximum amount of time after transmitting a frame before raising an interrupt. If frames have
been transmitted but the frame count threshold has not been met, an interrupt is raised when the threshold
timer reaches zero. The threshold timer is reset to the value in this field and begins counting down upon
transmission of the first frame having its TxBD[I] bit set. The threshold value is represented in units of 64 clock
periods as specified by the timer clock source (TXIC[ICCS[). The value of ICTT must be greater than zero to
avoid unpredictable behavior.
2
an interrupt is raised when the threshold number of frames is reached (defined by TXIC[ICFT]) or when the
threshold timer expires (determined by TXIC[ICTT]).
operation.
3
Figure 15-13
ICFT
Figure 15-13. TXIC Register Definition
Table 15-18. TXIC Field Descriptions
describes the definition for the TXIC register.
10 11
—
All zeros
Description
15 16
ICTT
Freescale Semiconductor
Access: Read/Write
31
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