TRx I/O Definition (cont’d.)
Name
RX[0]
RX[1]
RX[2]
RX[3]
RX[4]
RX[5]
RX[6]
RX[7]
RX[8]
RX[9]
RXCAP0
RXCAP1
TX[0]
TX[1]
TX[2]
TX[3]
TX[4]
TX[5]
TX[6]
TX[7]
TX[8]
TX[9]
TXCAP1
TXCAP0
V
CC
_RX
Pin
45
44
43
41
40
39
38
36
35
34
48
49
2
3
4
6
7
8
9
11
12
13
16
17
23
28
57
50
53
55
29
37
42
20
59
18
60
Type
O-TTL
Signal
Data Outputs:
One 10 bit data byte. RX[0] is the first bit received.
RX[0] is the least significant bit.
C
I-TTL
Loop Filter Capacitor:
A loop filter capacitor for the internal PLL must
be connected across the RXCAP0 and RXCAP1 pins. (typical value = 0.1
µF).
Data Inputs:
One 10 bit, 8B/10B-encoded data byte. TX[0] is the first
bit transmitted. TX[0] is the least significant bit.
C
S
V
CC
_RXA
V
CC
_RXHS
S
S
V
CC
_RXTTL
S
Loop Filter Capacitor:
A loop filter capacitor must be connected across
the TXCAP1 and TXCAP0 pins (typical value = 0.1
µF).
Logic Power Supply:
Normally 3.3 volts. Used for internal receiver
PECL logic. It should be isolated from the noisy TTL supply as well as
possible.
Analog Power Supply:
Normally 3.3 volts. Used to provide a clean
supply line for the PLL and high-speed analog cells.
High-Speed Supply:
Normally 3.3 volts. Used only for the high-speed
receiver cell (HS_IN). Noise on this line should be minimized for best
operation.
TTL Power Supply:
Normally 3.3 volts. Used for all TTL receiver output
buffer cells.
Logic Power Supply:
Normally 3.3 volts. Used for internal transmitter PECL
logic. It should be isolated from the noisy TTL supply as well as possible.
Analog Power Supply:
Normally 3.3 volts. Used to provide a clean
supply line for the PLL and high-speed analog cells.
High-Speed ECL Supply:
Normally 3.3 volts. Used only for the last stage
of the high-speed transmitter output cell (HS_OUT) as shown in
Figure 10. Due to high current transitions, this V
CC
should be well
bypassed to a ground plane.
High-Speed Supply:
Normally 3.3 volts. Used by the transmitter side for the
high-speed circuitry. Noise on this line should be minimized for best operation.
TTL Power Supply:
Normally 3.3 volts. Used for all TTL
transmitter input buffer cells.
V
CC
_TX
V
CC
_TXA
V
CC
_TXECL
S
S
S
V
CC
_TXHS
V
CC
_TXTTL
63
5
10
S
S
723
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
