May 2005
15
M9999-051305
KS8995XA
Micrel, Inc.
Pin Number
Pin Name
Type(1)
Port
Pin Function(2)
47
PWRDN_N
Ipu
Full-chip power down. Active low.
48
RESERVE/NC
Reserved pin. No connect.
109
Reserved
All
No connect.
112
Reserved
All
No connect.
115
RST_N
Ipu
Reset the KS8995X. Active low.
5
RXM1
I
1
Physical receive signal - (differential).
11
RXM2
I
2
Physical receive signal - (differential).
20
RXM3
I
3
Physical receive signal - (differential).
26
RXM4
I
4
Physical receive signal - (differential).
33
RXM5
I
5
Physical receive signal - (differential).
4
RXP1
I
1
Physical receive signal + (differential).
10
RXP2
I
2
Physical receive signal + (differential).
19
RXP3
I
3
Physical receive signal + (differential).
25
RXP4
I
4
Physical receive signal + (differential).
32
RXP5
I
5
Physical receive signal + (differential).
119
SCANEN
Ipd
Factory test pin.
110
SCL
I/O
All
Output clock at 81kHz in I2C master mode. See “Pin# 113.”
84
SCOL
Ipd/O
Switch MII collision detect.
87
SCONF0
Ipd
Dual MII configuration pin.
86
SCONF1
Ipd
Dual MII configuration pin.
Pin# (91, 86, 87):
Switch MII
PHY [5] MII
000
Disable, Otri
001
PHY Mode MII
Disable, Otri
010
MAC Mode MII
Disable, Otri
011
PHY Mode SNI
Disable, Otri
100
Disable
101
PHY Mode MII
110
MAC Mode MII
PHY Mode MII
111
PHY Mode SNI
PHY Mode MII
85
SCRS
Ipd/O
Switch MII carrier sense.
111
SDA
I /O
All
Serial data input/output in I2C master mode. See “Pin# 113.”
78
SMRXC
I/O
Switch MII receive clock. PHY or MAC mode MII.
83
SMRXD0
Ipd/O
Switch MII receive bit 0; strap option: see “Register 11[1].”
Notes:
1. P = Power supply.
I = Input.
O = Output.
I/O = Bidirectional.
Gnd = Ground.
Ipu = Input w/internal pull-up.
Ipd = Input w/internal pull-down.
Ipd/O = Input w/internal pull-down during reset, output pin otherwise.
Ipu/O = Input w/internal pull-up during reset, output pin otherwise.
2. Otri = Output tristated.