88e1240 Marvell Semiconductor, Inc., 88e1240 Datasheet - Page 16

• Manufacturer Part Number: 88e1240
• Description: Integrated 10/100/1000 Gigabit Ethernet Transceiver
• Manufacturer: Marvell Semiconductor, Inc.

Table 12:
Table 13:
Table 14:
Doc. No. MV-S103821-00, Rev. A
Page 16
17 6-TQFP
Pin #
101
102
99
1
17 6-TQFP
Pin #
97
96
98
152
17 6-TQFP
Pin #
89
Clock/Reset
Test
Reference
196 -T FB GA
P i n #
K14
J14
L14
D2
196 -T FB GA
P i n #
M14
M13
K13
C8
196 -T FB GA
P i n #
L13
Alaska
Integrated 10/100/1000 Gigabit Ethernet Transceiver
®
88E1240 Product Brief
Pin Name
XTAL1
XTAL2
TSTCLK
RESETn
Pin Name
HSDACP
HSDACN
TSTPT
TSTPTF
Pin Name
RSET
Document Classification: Proprietary Information
Pi n
Typ e
I
O
I
I
Pi n
Typ e
O
O
O
Pi n
Typ e
I
De scrip tio n
25 MHz Clock Input
25 MHz ± 50 ppm tolerance crystal reference or
oscillator input. The XTAL1 input voltage should
not exceed 1.8V+5%.
25 MHz Crystal Output.
25 MHz ± 50 ppm tolerance crystal reference.
When the XTAL2 pin is not connected, it should be
left floating.
Test Clock. Must be tied to XTAL1.
Hardware reset. XTAL1 must be active for a mini-
mum of 10 clock cycles before the rising edge of
RESETn. RESETn must be in inactive state for
normal operation.
1 = Normal operation
0 = Reset
De scrip tio n
AC Test Point. Positive and Negative.
These pins are also used to bring out a differential
TX_TCLK. These pins can be connected to VSS
through a 50 ohms termination resistor for IEEE
testing and debug purposes. These pins maybe
left floating if debug and IEEE testing are not of
importance.
DC Test Point. The TSTPT pin should be left float-
ing if not used.
DC test point. The TSTPTF pin should be left float-
ing if not used.
De scrip tio n
Resistor Reference
External 5.0 kohm 1% resistor connected to
ground.
Copyright © 2011 Marvell
May 4, 2011, Advance