Network Card User Manual

PacingblockTXEVT[0]
PacingblockTXEVT[1]
EW_INTCTL[8]
EW_INTCTL[9]
PacingblockTXEVT[2]
PacingblockTXEVT[3]
EW_INTCTL[10]
EW_INTCTL[11]
PacingblockTXEVT[4]
PacingblockTXEVT[5]
EW_INTCTL[12]
EW_INTCTL[13]
Pacingblock
TXEVT[6]
PacingblockTXEVT[7]
EW_INTCTL[14]
EW_INTCTL[15]
PS_TICK EW_INTCTL[15:8]
MACTXINT
Transmitpacerandinterruptcombiner
www.ti.com EMAC Functional Architecture
2.7.4 Transmit Pacer and Interrupt Combiner (TPIC)
The transmit pacer and interrupt combiner (TPIC) block performs the following functions:
• Optionally implements pacing for transmit events.
• Combines the output of the pacer module based on the settings of the bits 8 to 15 in the EW_INTCTL
register and generates a single MACTXINT interrupt per the C64x+ megamodule.
• Receives a single PS_TICK and forwards it to all the pacing blocks.
• Allows, per interrupt enabling or disabling of the interrupts, the setting of bits 8 to 15 in the
EW_INTCTL register.
Figure 18 shows the block diagram of transmit pacer and interrupt combiner (TPIC). TXEVT is an interrupt
from EMAC.
Figure 18. Transmit Pacer and Interrupt Combiner
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SPRUEF8F–March 2006–Revised November 2010 C6472/TCI6486 EMAC/MDIO
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