W83627DHG Nuvoton Technology Corporation of America, W83627DHG Datasheet - Page 187

• Manufacturer Part Number: W83627DHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.3 Stop Frame
After all IRQ/Data Frames have completed, the host controller will terminates SERIRQ with a Stop
frame. Only the host controller can initiate the Stop Frame by driving SERIRQ low for 2 or 3 clocks. If
the Stop Frame is low for 2 clocks, the Sample mode of next SERIRQ cycle’s Sample mode is the Quiet
mode. If the Stop Frame is low for 3 clocks, the Sample mode of next SERIRQ cycle is the Continuous
mode.
Please see the diagram below for more details.
H=Host Control
Note:
PCICLK
SERIRQ
Driver
1. There may be none, one or more Idle states during the Stop Frame.
2. The Start Frame pulse of next SERIRQ cycle may or may not start immediately after the
turn-around clock of the Stop Frame.
S
FRAME
None
Stop Frame Timing with Host Using 17 SERIRQ sampling period.
IRQ14
R
T
R=Recovery
S
IRQ15
IRQ15
FRAME
R
T
S
IOCHCK#
T=Turn-around
None
FRAME
R
-175-
T
I
1
STOP FRAME
Host Controller
Publication Release Date: Aug, 22, 2007
STOP
H
S=Sample
R
T
W83627DHG
NEXT CYCLE
START
I= Idle.
Version 1.4
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