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DATASHEET
TW3801
FN8283
Rev.1.00
Security Link Over Coax (SLOC) Transmitter
November 29, 2012
SLOC (Security Link Over Coax) is a transmission protocol for
Features
simultaneously transmitting analog CVBS video and digital IP
Simultaneous transmission of IP video data and analog
video over a single coaxial cable.
CVBS video over up to 500m of RG59 coaxial cable
The TW3801 is the transmitting (camera) end of a SLOC link,
Analog CVBS video preview support
combining Ethernet digital video data and analog CVBS video
into a single SLOC signal that can be transmitted over 500m of Proprietary adaptive analog equalizer for extending the
coaxial cable. It can be embedded into a camera or configured reach of CVBS video
as a stand-alone IP+CVBS-to-SLOC converter.
Proprietary SLOC-based IP DVR detection
The TW3801 includes an AFE, digital modem, and two
Creates a full-duplex 100BASE-T digital link
Ethernet MII/RMII interfaces. The device accepts an analog
36Mbps downlink speed from TW3801 to TW3811
CVBS signal and an Ethernet (R)MII signal and encodes it into a
4Mbps uplink for SLOC compliance
SLOC signal.
Ethernet MAC MII/RMII interface for interfacing to Camera
Applications
ISPs
Single-channel SLOC transmitter modem
Ethernet PHY MII/RMII interface for interfacing to Ethernet
PHY chip
Embedded SLOC camera modem
2
I C 2-wire control interface
Integrated PLL with 25MHz crystal interface
1.8V, 3.3V supplies
100-TQFP (12mmx12mm) Package
Application Block Diagram
IP Camera SLOC Adapter Module
One-Channel SLOC Receiver
MCU MCU
SPOT
(optional) (optional)
Monitor
Analog Analog
CVBS CVBS
Up to 500m of
EL8101
RG59 cable
DVR
TW3801 TW3811
Ethernet
Network
Ethernet
100BASE-T 100BASE-T
Switch
PHY PHY
NVR
Simplified Application Schematic
1.8V 3.3V 3.3V
Ethernet
V V V
DD_D DD_IO DD_A
MII or
I/O SLOC
COAX_IN
MII / RMII
RJ45 RMII Coax I/O
22F
Interface
PHY
0.1F
COAX_OUT
IP
TW3801
Camera
LOAD_DRV
470F
CVBS
10F
Input
75 75
CVBS_IN
75
150nH
1M
25MHz
2
I C
22pF 22pF
Microcontroller
FN8283 Rev.1.00 Page 1 of 19
November 29, 2012
SCL
SDA
XTAL_IN
XTAL_OUT
+ +TEST_IO
76 VSS_A 50
77 CVBS_IN VSS_IO 49
78 COAX_IN VDD_IO 48
TEST_IN1
79 VSS_DAC 47
80 VREF TEST_IN0 46
81 VDD_DAC RX_D3 45
B
RX_D2
82 VDD_PLL B 44
83 VSS_PLL VSS_D 43
84 XTAL_IN VDD_D 42
85 XTAL_OUT RX_D1 41
B
RX_D0
86 VDD_IO B 40
87 VSS_IO RX_DV 39
B
88 MODE_S0 RX_ER 38
B
TX_CLK
89 VDD_D B 37
90 VSS_D RX_CLKB 36
91 MODE_S1 VSS_D 35
92 MODE_S2 VDD_D 34
TX_D3
93 MODE_S3 B 33
94 SDA TX_D2 32
B
95 VDD_D TX_D1 31
B
TX_D0
96 VSS_D B 30
97 SCLK TX_ENB 29
98 HWRST VSS_IO 28
VDD_IO 27
99 VDD_IO
TX_ER
100 VSS_IO B 26
TW3801
Ordering Information
PART PART TEMP RANGE PACKAGE PKG.
NUMBER MARKING (C) (Pb-free) DWG. #
TW3801-TC1-CR (Notes 1, 2, 3) TW3801 TC1-CR -40 to +85 100 Ld TQFP Q100.12X12A
TW3801-TC1-CR-EVAL Evaluation Board
NOTES:
1. Add T suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For more information on MSL please see tech brief TB363.
Pin Configuration
TW3801
(100 LD TQFP)
TOP VIEW
COM_REF
1 VDD_IO 75
2 VSS_IO VDD_A 74
3 MDC VSS_TVDR 73
4 MDIO NC 72
5 RX_DV VDD_TVDR 71
A
6 RX_ER VSS_DRV 70
A
7 RX_D0 NC 69
A
8 NC
VDD_D 68
9 VSS_D COAX_OUT 67
10 RX_D1 LOAD_DRV 66
A
11 RX_D2 VDD_DRV 65
A
12 RX_D3A VDD_ADC 64
TW3801
13 NC REFP_ADC 63
14 TX_EN REFN_ADC 62
A 100-pin TQFP (12x12)
15 VDD_D COM_ADC 61
16 VSS_D VSS_ADC 60
17 TX_ER VSS_D 59
A
18 TX_D0 VDD_D 58
A
19 TX_D1 57
A A1
20 TX_D2 A0 56
A
21 TX_D3 LED_2 55
A
22 RX_CLK LED_1 54
A
VDD_IO
23 LED_0 53
24 VSS_IO VSS_IO 52
25 TX_CLK VDD_IO 51
A
FN8283 Rev.1.00 Page 2 of 19
November 29, 2012