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MXL1344ACAG Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MXL1344ACAG Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 12 page The state of the MXL1344A’s mode-select pins, M0, M1, M2, and DCE/DTE determines the mode of each of the six termination networks. Table 1 shows a cross-ref- erence of termination mode and select pin state for each of the six termination networks within the MXL1344A. +5V Multiprotocol, Software-Selectable Cable Terminator 6 _______________________________________________________________________________________ Table 1. Termination Mode Select Table PROTOCOL DCE/ DTE M2 M1 M0 R1 R2 R3 R4 R5 R6 V.10/RS-423 0 0 0 0 Z Z Z Z Z Z RS-530A 0 0 0 1 Z Z Z V.11 V.11 V.11 RS-530 0 0 1 0 Z Z Z V.11 V.11 V.11 X.21 0 0 1 1 Z Z Z V.11 V.11 V.11 V.35 0 1 0 0 V.35 V.35 Z V.35 V.35 V.35 RS-449/V.36 0 1 0 1 Z Z Z V.11 V.11 V.11 V.28/RS-232 0 1 1 0 Z Z Z Z Z Z No Cable 0 1 1 1 V.11 V.11 V.11 V.11 V.11 V.11 V.10/RS-423 1 0 0 0 Z Z Z Z Z Z RS-530A 1 0 0 1 Z Z Z Z V.11 V.11 RS-530 1 0 1 0 Z Z Z Z V.11 V.11 X.21 1 0 1 1 Z Z Z Z V.11 V.11 V.35 1 1 0 0 V.35 V.35 V.35 Z V.35 V.35 RS-449/V.36 1 1 0 1 Z Z Z Z V.11 V.11 V.28/RS-232 1 1 1 0 Z Z Z Z Z Z No Cable 1 1 1 1 V.11 V.11 V.11 V.11 V.11 V.11 Note: Z Indicates high impedance, 1 = high and 0 = low. Z, V.11, and V.35 refer to termination modes (Figure 4.) R2 52 Ω R3 127 Ω R1 52 Ω S1 CLOSED A B S2 OPEN (a) V.11 (b) V.35 (c) Z A C B A B MXL1344A R2 52 Ω R3 127 Ω R1 52 Ω S1 CLOSED S2 CLOSED R2 52 Ω R3 127 Ω R1 52 Ω S1 OPEN S2 OPEN CC MXL1344A MXL1344A Figure 4. Termination Modes |
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