![](http://datasheet.mmic.net.cn/20000/SPMC68376BGCFT20_datasheet_1390479/SPMC68376BGCFT20_126.png)
MC68336/376
SYSTEM INTEGRATION MODULE
MOTOROLA
USER’S MANUAL
Rev. 15 Oct 2000
5-46
configured as outputs begin to function after RESET is released. Table 5-17 is a sum-
mary of SIM pin states during reset.
5.7.5.2 Reset States of Pins Assigned to Other MCU Modules
As a rule, module pins that are assigned to general-purpose I/O ports go into a high-
impedance state following reset. Other pin states are determined by individual module
control register settings. Refer to sections concerning modules for details. However,
during power-on reset, module port pins may be in an indeterminate state for a short
5.7.6 Reset Timing
The RESET input must be asserted for a specified minimum period for reset to occur.
External RESET assertion can be delayed internally for a period equal to the longest
bus cycle time (or the bus monitor time-out period) in order to protect write cycles from
Table 5-17 SIM Pin Reset States
Pin(s)
Pin State
While RESET
Asserted
Pin State After RESET Released
Default Function
Alternate Function
Pin Function
Pin State
Pin Function
Pin State
CS10/ADDR23/ECLK
VDD
CS10
VDD
ADDR23
Unknown
CS[9:6]/ADDR[22:19]/PC[6:3]
VDD
CS[9:6]
VDD
ADDR[22:19]
Unknown
ADDR[18:0]
High-Z
ADDR[18:0]
Unknown
ADDR[18:0]
Unknown
AS/PE5
High-Z
AS
Output
PE5
Input
AVEC/PE2
High-Z
AVEC
Input
PE2
Input
BERR
High-Z
BERR
Input
BERR
Input
CS1/BG
VDD
CS1
VDD
BG
VDD
CS2/BGACK
VDD
CS2
VDD
BGACK
Input
CS0/BR
VDD
CS0
VDD
BR
Input
CLKOUT
Output
CLKOUT
Output
CLKOUT
Output
CSBOOT
VDD
CSBOOT
VSS
CSBOOT
VSS
DATA[15:0]
Mode select
DATA[15:0]
Input
DATA[15:0]
Input
DS/PE4
High-Z
DS
Output
PE4
Input
DSACK0/PE0
High-Z
DSACK0
Input
PE0
Input
DSACK1/PE1
High-Z
DSACK1
Input
PE1
Input
CS[5:3]/FC[2:0]/PC[2:0]
VDD
CS[5:3]
VDD
FC[2:0]
Unknown
HALT
High-Z
HALT
Input
HALT
Input
IRQ[7:1]/PF[7:1]
High-Z
IRQ[7:1]
Input
PF[7:1]
Input
MODCLK/PF0
Mode Select
MODCLK
Input
PF0
Input
R/W
High-Z
R/W
Output
R/W
Output
RESET
Asserted
RESET
Input
RESET
Input
RMC/PE3
High-Z
RMC
Output
PE3
Input
SIZ[1:0]/PE[7:6]
High-Z
SIZ[1:0]
Unknown
PE[7:6]
Input
TSTME/TSC
Mode select
TSC
Input
TSC
Input