W83627EHG Nuvoton Technology Corporation of America, W83627EHG Datasheet - Page 200

• Manufacturer Part Number: W83627EHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627EHG

• 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

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.
PCICLK
SERIRQ
H=Host Control
Note:
13.3 Stop Frame
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
S
turn-around clock of the Stop Frame.
FRAME
None
IRQ14
R
Stop Frame Timing with Host Using 17 SERIRQ sampling period.
T
R=Recovery
S
IRQ15
IRQ15
FRAME
R
T
S
IOCHCK#
None
FRAME
R
T=Turn-around
W83627EHF/EF, W83627EHG/EG
-189-
T
I
1
STOP FRAME
Host Controller
STOP
H
Publication Release Date: April 7, 2009
R
S=Sample
T
NEXT CYCLE
START
I= Idle.
Version 1.94
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