ml6694 Microsemi Corporation, ml6694 Datasheet - Page 4

• Manufacturer Part Number: ml6694
• Description: 100base-tx Physical Layer With 5-bit Interface
• Manufacturer: Microsemi Corporation

ML6694
4
PIN DESCRIPTION
39
40,41 (34,35)
42
43
44
PIN
(33)
(36)
(37)
(38)
NAME
CMREF
10BTTXINN/P 10BASE-T transmit waveform inputs. The ML6694 presents a linear copy of the input
LPBK
AVCC1
TXC
(Continued)
DESCRIPTION
point for the twisted-pair media line receiver. A typical value for CMREF is
(VCC–1.26)V.
at 10BTTXINN/P to the TPOUTN/P outputs when the ML6694 functions in 10BASE-T
mode. Signals presented to these pins must be centered at V
amplitude of 0.25V.
Loopback TTL input pin. Tying this pin to ground places the part in loopback mode;
data at RSM<4:0> are serialized, MLT-3 encoded, equalized then sent to the receive
PLL for clock recovery and sent to the RSM<4:0> outputs. Floating this pin or tying it
to V
Analog +5V power supply.
Transmit clock TTL input. This 25MHz clock is the frequency reference for the
internal transmit PLL clock multiplier. This pin should be driven by an external
25MHz clock at TTL or CMOS levels.
Receiver common-mode reference output. This pin provides a common-mode bias
CC
places the part in its normal mode of operation.
CC
/2 with a single ended