VN16218L2 VAISH [Vaishali Semiconductor], VN16218L2 Datasheet - Page 3

• Manufacturer Part Number: VN16218L2
• Description: 2.5 Gigabit SERDES Transceiver
• Manufacturer: VAISH [Vaishali Semiconductor]

VN16218
Table 1. Pin Description
2001-11-09
VDDT
VSS
VDD
VDDA
TX[0:19]
VSSA
NC
VSST
TBC/REF
TEST1
EQEN
EN_CD
RX-F
EWR
COM_DET
RBC, RBCN
Vaishali Semiconductor
Name
1, 73
7, 30, 41,
60
13, 31, 46,
53
21, 66, 69,
71
2, 4, 6
9,11, 14
16, 18, 20
23, 3, 5
8,10,12
15, 17, 19
22, 24
25, 61, 70,
72
26, 29, 79
27, 40
28
32
33
34
35
36
37
38, 39
Pin #
747 Camden Avenue, Suite C
P
P
P
P
I-TTL
P
P
I-TTL
I-TTL
I-TTL
I-TTL
O
I-TTL
O-TTL
O-TTL
Type
3.3V power supply
Digital Ground. 0V
Digital Power Supply. Connect to 1.8V
Analog Power Supply. Connect to 1.8V
Transmit Data Bus (bits 0 through 19). 20 bit transmit character.
Parallel data on this bus is clocked in on the rising edge of TBC.
The data bit corresponding to T0 is transmitted first
Analog Ground. 0V
No Connection
TTL ground
Transmit Byte Clock / Reference Clock . A 125 MHz clock supplied
by the host system. The transmitter section accepts this signal as
the frequency reference clock. It is multiplied by 20 to generate the
serial bit clock and other internal clocks. The transmit side also
uses this clock as the transmit byte clock for the incoming parallel
data TX0 …. TX19. It also serves as the reference clock for the
receive portion of the transceiver
Test pin. For Vaishali use only. User should connect to V
Equalizer enable
Enables comma detect
Receiver filter pin. For Vaishali use only.
Enable Internal WRAP mode. This pin is LOW in normal operation.
When enabled High, an internal loop-back path from the transmitter
to the receiver is enabled, TX+ is HIGH and TX- is LOW
Comma Detect. This output goes HIGH to signify that R0:6 contains
a comma character (0011111). COM_DET can be sampled on the
rising edge of TBC
Recovered Byte Clock. Recovered clock and its complement
derived from the RX data rate divided by 20. The rising edge of
RBC corresponds to a new word on RX[0:19]
www.vaishali.com
Campbell
Page 3
CA 95008
Description
Ph. 408.377.6060
Advance Information
Fax [phone]
DD
MDSN-0003-00