ML6674
PIN CONFIGURATION
ML6674
ML6674
32-Pin PCC (Q32)
32-PinTQFP (H32-7)
4
3
2
1
32 31 30
32 31 30 29 28 27 26 25
29
28
27
26
25
24
23
22
21
RRSET1
TPIN–
TPIN+
CMREF
N/C
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
TPOUT–
TPOUT+
RTSET2
RTSET1
TVCCD
TXIN–
RXOUT+
RVCCD
SD–
5
6
RRSET1
RRSET2
N/C
7
SD+
8
N/C
N/C
9
RGND
N/C
TGNDD
LPBK
10
11
12
13
N/C
N/C
RVCCA
RXOUT–
TXIN+
N/C
TXOFF
N/C
TVCCA
TGNDA
9
10 11 12 13 14 15 16
14 15 16 17 18 19 20
PIN DESCRIPTION
NAME
FUNCTION
NAME
FUNCTION
TX +, TX –
These differential ECL100K compatible
inputs receive NRZ data from the PHY
for transmission.
SD+, SD–
These differential ECL100K
compatible outputs indicate the
presence of a data signal with an
amplitude exceeding a preset
threshold.
IN
IN
TPOUT+,
TPOUT–
Outputs from the NRZ buffer drive
these differential current outputs. The
transmitter filter/transformer module
connects the media to these pins.
TPIN+, TPIN–
NRZ encoded data from the
receiver filter/transformer module
enters the Receiver through these
pins.
LPBK
This TTL input enables transmitter-
Receiver loopback internally when
asserted low.
RXOUT+,
RXOUT–
Differential ECL100K compatible
outputs provide NRZ encoded data
to the PHY.
TXOFF
This TTL input forces the NRZ driver to
a high impedence state when asserted
low and shuts off transmit bias currrent.
RRSET1,
RRSET2
Internal time constants controlling
the equalizer’s transfer function
are set by an external resistor
connected across these pins.
RTSET1,
RTSET2
An external 1% resistor connected
between these pins controls the
transmitter output current amplitude.
I
= 32 x 1.25V/RTSET
CMREF
This pin provides a DC common
mode reference point for the
receiver inputs.
OUT
TVCCA,
TVCCD
Separate analog and digital
transmitter power supply pins help to
isolate sensitive circuitry from noise
generating digital functions. Both
supplies are nominally +5 volts.
RVCCA,
RVCCD
Analog and digital supply pins are
separated to isolate clean and
noisy circuit functions. Both
supplies are nominally +5 volts.
TGNDA,
TGNDD
Analog and digital transmitter grounds
provide separate return paths for clean
and noisy signals.
RGND
Receiver ground.
2
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
