HDMP-1526 Datasheet, PDF (12/14 Pages) Agilent(Hewlett-Packard) – Fibre Channel Transceiver Chip

TRx I/O Definition (cont’d.)
Name
VCC_RXTTL
RBC1
RBC0
GND_RXTTL
RX[0]
RX[1]
RX[2]
RX[3]
RX[4]
RX[5]
RX[6]
RX[7]
RX[8]
RX[9]
BYTSYNC
RXCAP0
RXCAP1
VCC_RXA
GND_RXA
-DIN
+DIN
VCC_RXHS
GND_RXHS
VCC_TXECL
VCC_TXHS
-DOUT
+DOUT
GND_TXHS
Pin Type
Signal
29
S TTL Power Supply: Normally 5 volts. Used for all TTL receiver output
37
buffer cells.
42
30 O-TTL Receiver Byte Clocks: The receiver section recovers two 53.125 MHz
31
receive byte clocks. These two clocks are approximately 180 degrees out
of phase. The receiver parallel data outputs are alternatively clocked on
the rising edge of these clocks. RBC1 aligns and outputs the comma
character (for byte alignment) when detected.
32
S TTL Receiver Ground: Normally 0 volts. Used for the TTL output cells
33
of the receiver section.
46
45 O-TTL Data Outputs: One 10 bit data byte. RX[0] is the first bit received.
44
RX[0] is the least significant bit.
43
41
40
39
38
36
35
34
47 O-TTL Byte Sync Output: An active high output. Used to indicate detection of
either a comma character or a K28.5 special character of positive
disparity. It is only active when ENBYTSYNC is enabled.
48
C Loop Filter Capacitor: A loop filter capacitor for the internal PLL is
49
connected across the RXCAP0 and RXCAP1 pins.
(typical value = 0.01 µF).
50
S Analog Power Supply: Normally 5 volts. Used to provide a clean supply
line for the PLL and high-speed analog cells.
51
S Analog Ground: Normally 0 volts. Used to provide a clean ground
plane for the receiver PLL and high-speed analog cells.
52 HS_IN Serial Data Inputs: High-speed inputs. Serial data is accepted from the
54
± DIN inputs when LOOPEN is low.
53
S High-Speed Supply: Normally 5 volts. Used only for the high-speed
55
receiver cell (HS_IN). Noise on this line should be minimized for best
operation.
56
S Ground: Normally 0 volts.
60
S High-Speed ECL Supply: Normally 5 volts. Used only for the last stage
of the high-speed transmitter output cell (HS_OUT) as shown in
Figure 9. Due to high current transitions, this V_CC should be well
bypassed to a ground plane.
63
S High-Speed Supply: Normally 5 volts. Used by the transmitter side
for the high-speed circuitry. Noise on this line should be minimized
for best operation.
61 HS_OUT Serial Data Outputs: High-speed outputs. These lines are active when
62
LOOPEN is set low. When LOOPEN is set high, these outputs are held
static.
64
S Ground: Normally 0 volts.
693