w86l488y-ay Winbond Electronics Corp America, w86l488y-ay Datasheet - Page 24

• Manufacturer Part Number: w86l488y-ay
• Description: Winbond Host Interface Sd/sdio/mmc Memory Card Bridge
• Manufacturer: Winbond Electronics Corp America

Interrupt (XINTN):
Interrupt is used to notify Host that this device needs its service. The status can be read and check
repeatedly if the Host cannot serve regard interrupt. XINTN will be asserted (low level) at the falling
edge of system clock if any bit in the Interrupt Reg. is set, XINTN pin will de-asserted (high level)
when related bit of Interrupt Status Reg. is set. But DRQ interrupt has the higher priority than
configuration of Interrupt Status Reg.. XINTN will be asserted again at four system clocks period later
if any other interrupt event is still pending.
XWRHN
XINTN
System_
A[3:1]
D[15:0]
XCSN
XRDN
Clock
Fig. 7-6 Host Write Transmit Data Buffer in Burst Access Mode (DABST = high).
System_
A[3:1]
D[15:0]
XCSN
XWRHN
XWRLN
XDRQN
Clock
010
Fig. 7-7 Timing of Interrupt in.
011
0x80XX
- 21 -
010
Publication Release Date: June 04, 2006
010
011
1xxxxxxxb
W86L488
Revision 1.21