ksz8851-mql Micrel Semiconductor, ksz8851-mql Datasheet - Page 12

• Manufacturer Part Number: ksz8851-mql
• Description: Single-port Ethernet Mac Controller With 8/16-bit Or 32-bit Non-pci Interface
• Manufacturer: Micrel Semiconductor

February 2009
Micrel, Inc.
Pin Number
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Pin Name
P1LED3
PWRDN
VDDCO
DGND
EEDO
DGND
AGND
EECS
ARDY
EEEN
EESK
EEDI
WRN
RDN
AEN
NC
NC
NC
NC
NC
Ipd/O
Type
Opd
Opu
Gnd
Opd
Opd
Gnd
Gnd
Ipu
Ipd
Ipd
Ipu
Ipu
Ipu
—
—
—
—
—
P
Pin Function
Read Strobe Not
Asynchronous read strobe, active Low.
EEPROM Chip Select
This signal is used to select an external EEPROM device.
Asynchronous Ready
ARDY may be used when interfacing asynchronous buses to extend bus access cycles. It
is asynchronous to the host CPU or bus clock. This pin need an external 4.7K pull-up
resistor.
No Connect.
No Connect
Digital IO ground
1.8V digital core voltage output (internal 1.8V LDO regulator output), this 1.8V output pin
provides power to VDDC, VDDA and VDDAP pins. These 1.8V input pins directly connect
to external 1.8V when VDDIO is 1.8V.
Note: Internally LDO regulator input is from VDDIO. Do not connect an external power
supply to this pin. This pin is used for connecting external filter (Ferrite bead and
capacitors).
No Connect.
EEPROM Enable
EEPROM is enabled and connected when this pin is pull-up.
EEPROM is disabled when this pin is pull-down or no connect.
Port 1 LED indicator
See the description in pins 3, 4, and 5.
EEPROM Data Out
This pin is connected to DI input of the serial EEPROM.
EEPROM Serial Clock: A 4
(OBCR[1:0]=00 on-chip bus speed @ 125MHz) serial output clock cycle to load
configuration data from the serial EEPROM.
Config Mode: The pull-up/pull-down value is latched as big or little endian mode during
power-up / reset. See “Strapping Options” section for details
EEPROM Data In
This pin is connected to DO output of the serial EEPROM when EEEN is pull-up.
This pin has to pull-down for 8-bit bus mode or pull-up for 16-bus mode when the EEEN
pin is pull-down (without EEPROM).
Config Mode: The pull-up/pull-down value is latched as 16- or 8-bit mode during power-up
/ reset. See “Strapping Options” section for details.
No Connect.
Address Enable
Address and chip select qualifier for the address decoding and chip enable, active Low.
Write Strobe Not
Asynchronous write strobe, active Low.
Digital IO ground
No Connect.
Full-chip power-down. Active Low (Low = Power down; High or floating = Normal
operation). All I/O pins will tri-state during chip power down.
Analog ground
12
µ
s (OBCR[1:0]=11 on-chip bus speed @ 25MHz) or 800ns
KSZ8851-16/32 MQL/MQLI
M9999-021309-1.1