w86l488 Winbond Electronics Corp America, w86l488 Datasheet - Page 26

• Manufacturer Part Number: w86l488
• Description: Sd/ Sdio/ Mmc Memory Card Bridge
• Manufacturer: Winbond Electronics Corp America

Interrupt:
The XINTN pin is used to notify Host that something happens or error occurs. The INT bit of status
register can be read and check repeatedly if the Host cannot accept XINTN pin. XINTN will active
(low) at the falling edge of system clock if any bit in the interrupt register is high, XINTN pin will return
to high when write high to the related bit of the interrupt status register except DRQ interrupt in, the
XINTN pin will go low again at four system clock cycles later if any other interrupt event is still
pending.
XWRHN
XINTN
System_
A[3:1]
D[15:0]
XCSN
XRDN
Clock
Fig. 7-8 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. 7-9 Timing of Interrupt in.
011
0x80XX
- 23 -
010
Publication Release Date: February 5, 2004
Preliminary W86L488
010
011
1xxxxxxxb
Revision 0.82