3X38FTR Datasheet, PDF (16/64 Pages) Agere Systems – OCTAL-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX

3X38FTR 208-Pin SQFP
OCTAL-FET for 10Base-T/100Base-TX/FX
Preliminary Data Sheet
September 2000
Pin Information (continued)
Table 2. 3X38 RMII/SMII Pin Map (continued)
Pin
Number
RMII Mode Pins
I/O
SMII Mode Pins
I/O
27
RTXD1_5
26
RRXD0_5
25
RRXER_5
24
RCRS_DV_5
23
RRXD1_5
22
RTXD0_6
21
RTXEN_6
20
RTXD1_6
18
RRXD0_6
17
RRXD1_6
16
RRXER_6
14
RCRS_DV_6
19
RTXD0_7
13
RTXEN_7
12
RTXD1_7
11
RRXER_7
10
RCRS_DV_7
9
RRXD1_7
8
RRXD0_7
175
FDUPLED_4/RMII_MODE
[TIE LOW]
126
RMCLK 50 MHz CLOCK IN
I
NC
—
O
NC
—
O
SSYNC_7:4
I
O
STXD_5
I
O
NC
—
I
SRXD_6
O
I
NC
—
I
NC
—
O
NC
—
O
NC
—
O
NC
—
O
STXD_6
I
I
SRXD_7
O
I
NC
—
I
NC
—
O
NC
—
O
STXD_7
I
O
NC
—
O
NC
—
I
FDUPLED_4/SMII_MODE
I
[TIE HIGH]
I
RMCLK 125 MHz CLOCK IN
I
Pin Descriptions
Table 3. RMII/SMII Interface Pins
Pins
19, 22, 28, 33,
41, 48, 59, 70
Signal
RTXD0_[7:0]/
SRXD_[7:0]
12, 20, 27, 36,
42, 51, 57, 66
13, 21, 31, 38,
46, 52, 58, 68
8, 18, 26, 35,
40, 50, 55, 63
9, 17, 23, 32,
39, 47, 53, 61
RTXD1_[7:0]
RTXEN_[7:0]
RRXD0_[7:0]
RRXD1_[7:0]
Type
I
O
I
I
O
O
Description
RMII Transmit Data 0. Transmit data bit zero, transitions synchro-
nously with RMCLK.
SMII Receive Data and Control. Receive data and control transi-
tions synchronously with RMCLK.
RMII Transmit Data 1. Transmit data bit one, transitions synchro-
nously with RMCLK.
RMII Transmit Enable. Transmit enable indicates that the MAC is
presenting dibits on RTXD[1:0] for transmission.
RMII Receive Data 0. Receive data bit zero, transitions synchro-
nously with RMCLK.
RMII Receive Data 1. Receive data bit one, transitions synchro-
nously with RMCLK.
16
Lucent Technologies Inc.