System Interface Pins
Table 72 gives the state of the system interface pins in the powerdown state. Pins unaffected by the powerdown are
labeled “Unchanged”. Input pins are “Disabled” to prevent them from causing currents internal to the FDC37N769
when they have indeterminate input values.
Table 72 - State of System Pins in Auto Powerdown
SYSTEM PINS
STATE IN AUTO POWERDOWN
Input Pins
IOR
IOW
Unchanged
Unchanged
A[0:9]
D[0:7]
RESET
IDENT
DACK
TC
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Output Pins
Unchanged (low)
Unchanged
FINTR
DB[0:7]
FDRQ
Unchanged (low)
SMSC DS – FDC37N769
Page 93 of 137
Rev. 02-16-07
DATASHEET