DM9008AEP_06 DAVICOM [Davicom Semiconductor, Inc.], DM9008AEP_06 Datasheet - Page 9

• Manufacturer Part Number: DM9008AEP_06
• Description: Ethernet Controller with General Processor Interface
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

5. Pin Description
5.1 Processor Interface
18,17,16,1
4,13,12,11
5.2 EEPROM Interface
Preliminary
Version: DM9008AEP-DS-P03
Dec. 14, 2006
Pin No.
Pin No.
,10
31,
29,
28,
27,
26,
25,
24,
32
34
19
20
21
35
36
37
22
I = Input
# = asserted low
SD15_WAKE
SD14_LED3,
SD10_GP3,
SD11_GP4,
SD12_GP5,
SD13_GP6,
SD8_GP1,
SD9_GP2,
Pin Name
Pin Name
EEDIO
SD0~7
EECK
EECS
IOW#
CMD
IOR#
CS#
INT
O = Output
I/O,PD IO Data to EEPROM
I/O,PD
I/O,PD
O,PD
O,PD
O,PD
Type
I,PD
Type
I,PD
I,PD
I,PD
Processor Read Command
This pin is low active at default, its polarity can be modified by EEPROM setting.
See the EEPROM content description for detail
Processor Write Command
This pin is low active at default, its polarity can be modified by EEPROM setting.
See the EEPROM content description for detail
Chip Select
A default low active signal used to select the DM9008A. Its polarity can be
modified by EEPROM setting. See the EEPROM content description for detail.
Command Type
When high, the access of this command cycle is DATA port
When low, the access of this command cycle is INDEX port
Interrupt Request
This pin is high active at default, its polarity can be modified by EEPROM
setting or by strap pin EECK. See the EEPROM content description for
detail
Processor Data Bus bit 0~7
Processor Data Bus bit 8~15
In 16-bit mode (see EECS pin description), these pins act as the processor data
bus bit 8~15;
In 8-bit mode, these pins have other definitions in the followings:
Pin 31,29,28,27,26,25 act as the general purpose pins that defined in REG.1Eh
and 1Fh. The SD13_
When SD13_GP6 is pulled high, the INT is Open-Drain output type;
Otherwise it is force output type.
Pin 24 is act as full-duplex LED in LED mode 1; otherwise it act as 10Base-T link
LED in LED mode 0. (Note:
Pin 22 is act as a wake up signal.
Clock to EEPROM
This pin is also used as the strap pin of the polarity of the INT pin
When this pin is pulled high, the INT pin is low active; otherwise the INT pin is
high active
Chip Select to EEPROM
This pin is also used as a strap pin to define the internal memory data
bus width. When it is pulled high, the memory access bus is 8-bit;
Otherwise it is 16-bit.
I/O = Input/Output
PD = internal pull-low about 60K
Ethernet Controller with General Processor Interface
GP6 pin also act as trap pin for the INT output type.
LED mode is defined in EEPROM setting.)
O/D = Open Drain
Description
Description
DM9008AEP
P = Power
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