FDC37B787-NS Standard Microsystems (SMSC), FDC37B787-NS Datasheet - Page 115

• Manufacturer Part Number: FDC37B787-NS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37B787-NS

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

Timing Diagrams For IRQSER Cycle
PCICLK
IRQSER
Drive Source
A) Start Frame timing with source sampled a low pulse on IRQ1
PCICLK = 33Mhz_IN pin
IRQSER = SIRQ pin
1) Start Frame pulse can be 4-8 clocks wide.
IRQ1
SL
or
H
H=Host Control
SL=Slave Control
START
Host Controller
START FRAME
H
1
S=Sample
R
118
T
R=Recovery
T=Turn-around
IRQ0 FRAME IRQ1 FRAME
S
None
R
T
S
IRQ1
R
T
IRQ2 FRAME
S
None
R
T