DM9010_06 DAVICOM [Davicom Semiconductor, Inc.], DM9010_06 Datasheet - Page 26

• Manufacturer Part Number: DM9010_06
• Description: 10/100 Mbps Single Chip Ethernet Controller with General Processor Interface
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

6.33 General Purpose Register 2 ( 35H )
6.34 General Purpose Control Register 3 ( 36H )
6.35 General Purpose Register 3 ( 37H )
6.36 Processor Bus Control Register ( 38H )
Preliminary
Version: DM9010-17--DS-P04
Jan. 18, 2006
7~0
7~0
7~0
7~0
7:5
Bit
Bit
Bit
Bit
4
3
2
1
0
IOW_SPIKE
IOR_SPIKE
CURR
GPC2
Name
GPD2
Name
GPC3
Name
GPD3
Name
Reserved
Reserved
GPIO
HP0,RW
HP0,RW
HP0,RW
HP0,RW
Default
Default
Default
P011,RO
Default
P0,RW
P0,RW
P0,RW
P0,RW
P1,RW
General Purpose Control 2
Define the input/output direction of pins SD23~16, which are used as general
purpose pins when none 32-bit mode and external MII mode, respectively.
General Purpose Register 2 Data
When the correspondent bit of General Purpose Control Register 2 is set, the value
of the bit is reflected to pin SD23~16
When the correspondent bit of General Purpose Control Register 2 is 0, the value
of the bit to be read is reflected from correspondent pins SD23~16
General Purpose Control 3
Define the input/output direction of pins SD31~24, which are used as general
purpose pins when none 32-bit mode and external MII mode, respectively.
General Purpose Register 3 Data
When the correspondent bit of General Purpose Control Register 3 is set, the value
of the bit is reflected to pin SD31~24
When the correspondent bit of General Purpose Control Register 3 is 0, the value
of the bit to be read is reflected from correspondent pins SD31~24
Data Bus Current Driving/Sinking Capability
000: 2mA
001: 4mA
010: 6mA
011: 8mA (default)
100: 10mA
101: 12mA
110: 14mA
111: 16mA
Reserved
Enable Schmitt Trigger
1: Pin 35/36/37 (IOR/IOW/CS#) have Schmitt trigger capability.
Reserved
Eliminate IOW spike
1: eliminate about 2ns IOW spike
Eliminate IOR spike
1: eliminate about 2ns IOR spike
Single Chip Ethernet Controller with General Processor Interface
Description
Description
Description
Description
DM9010
26