R1610C RDC Semiconductor, R1610C Datasheet - Page 31

• Manufacturer Part Number: R1610C
• Description: High Performance 16 Bits MCU Integrated One 10/100M Mac Controller - 3.3V Operating Voltage/2.5V Core Voltage
• Manufacturer: RDC Semiconductor

R
RESCON register. Unfortunately, sometimes it latches the wrong data in the RESCON register. To avoid this
problem, programs can be used to check WTCR (Watchdog Timer Control Register) bit13. When the system is a
cold boot, WTCR bit13 is “0” and the RESCON register can be processed by programs. When the system is
re-started by the watchdog timeout, WTCR bit13 is “1” and the RESCON check can be skipped by programs.
Data Sheet
Final Version 1.5
October 27, 2003
R
9.1 Power-up Reset
Register Offset:
Register Name:
Reset Value
15-0
15
Bit
D
D
After watchdog timeout is processed, the system will be reset and the R1610C will re-latch D[15:0] into the
14
Name
C
C
RC
13
®
®
:
Attribute
R
R
I
I
S
S
C
C
RO
F6h
Reset Configuration Register
D[15:0]
D
D
12
SD_CLK
S
S
Internal
P
P
RST_n
Reset
C
C
o
o
m
m
m
m
u
u
11
Reset Configuration D[15:0].
The D[15:0] must be with weak pull-up or pull-down resistors to correspond the
contents when they are latched into this register as the RST_n signal goes from low
to high. The value of the reset configuration register provides the system information
when the software reads this register. This register is read only and the contents
remain valid until next processor reset.
n
n
i
i
c
c
a
a
t
t
i
i
o
o
n
n
min.=10ms
10
9
Power-up Reset Timing
8
RC
7
819.2us (X1 Input =
25MHz)
6
Description
5
4
Fast Ethernet RISC Processor
3
2
1
R1610C
0
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