Technical description – Impulse 2104 User Manual
Page 11
Technical Description
Sealevel Systems SeaLINK+485I Page
8
Technical Description
The SeaLINK+485I: utilizes a USB UART. This chip features programmable
baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte Dual Port
RX Buffer. The RS-422/485 transceiver supports data rates up to 921.6K baud.
Features
• Hot-Pluggable device
• Does not require opening the case
• No system resources are required (i.e. I/O ports or IRQ’s)
• LED status indicators for “USB Enabled”, “TD”, and “RD”
Connector Pin Assignments (DB25 Male)
The SeaLINK+485I complies with the EIA-530 pin out with the following
signals supported
Signal
Name
Pin
#
Mode
GND
Ground
7
RDB
RX+
Receive Positive
16
Input
RDA
RX-
Receive Negative
3
Input
TDB
TX+
Transmit Positive
14
Output
TDA
TX-
Transmit Negative
2
Output
Technical Note: The modem control signals are biased as follows : RTS is
connected to CTS, DTR is connected to DCD and DSR, and RI is tied
inactive.
- PCW-5181 (120 pages)
- PCM-4373 (2 pages)
- EPIC-5536 (2 pages)
- EPIC-CV07 (2 pages)
- EPIC-QM57 (2 pages)
- EPIC-QM77 (2 pages)
- VSX-6118-V2 (1 page)
- VSX-6116-V2 (1 page)
- VSX-6115-V2 (1 page)
- VSX-6114-V2 (1 page)
- VDX-6318RD (1 page)
- VDX-6316RD (1 page)
- VDX-6315RD (1 page)
- VDX-6314RD (1 page)
- PCM-5895 Rev. A (2 pages)
- PCM-8120 (2 pages)
- PCM-9562 (3 pages)
- VSX-6127-V2 (1 page)
- PCM-9375 (3 pages)
- GENE-5315W1 Rev. B (2 pages)
- GENE-5315 Rev. A (2 pages)
- VDX-6327RD (1 page)
- VDX-6328RD (1 page)
- VDX-6329RD (1 page)
- VDX-6326RD (1 page)
- PCM-9343 (3 pages)
- GENE-9655 (2 pages)
- PCM-9362 (2 pages)
- GENE-LN05W2 Rev. B (2 pages)
- PCM-9363 (3 pages)
- GENE-TC05W2 (2 pages)
- GENE-CV05W2 (2 pages)
- SBC-210 (1 page)
- GENE-QM57 (2 pages)
- GENE-QM67 (2 pages)
- GENE-QM77 Rev B (2 pages)
- GENE-QM77 Rev A (2 pages)
- GENE-QM87 (1 page)
- EL630-NR (2 pages)
- EL620-C (2 pages)
- SB601-C (2 pages)
- SB600-C (2 pages)
- SB630-CRM (2 pages)
- CL630-CRM (2 pages)
- DL631-C226 (2 pages)