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DS_6618_005
78M6618 Data Sheet
1.20 UARTs
The 78M6618 includes two UARTs (UART0 and UART1) that can be programmed to communicate with a
variety of external devices. The UARTs are dedicated 2-wire serial interfaces, which can communicate at
rates up to 38,400 bits/s. All UART transfers are programmable for parity enable, parity, 2 stop bits/1
stop bit and XON/XOFF options for variable communication baud rates from 300 to 38,400 bps. See the
78M6618 Programmer’s Reference Manual for more information regarding the use of the UART
resources.
1.20.1 UART1 (OPT_TX/OPT_RX)
The device includes an interface to implement an IR/optical port on UART1. The pin OPT_TX is
designed to directly drive an external LED for transmitting data on an optical link. The pin OPT_RX has
the same threshold as the RX(UART0) pin, but can also be used to sense the input from an external
photo detector used as the receiver for the optical link. Alternately, the UART1 may be interfaced with a
standard level UART transceiver. Contact Teridian support for more information.
1.21 In Circuit Emulator (ICE) Port
The 78M6618 implements an In Circuit Emulator(ICE) port for debug and programming of the device. To
enable the use of the port the ICE_E pin must be pulled high. In this mode the SEG11,SEG10 and SEG9
pins are repurposed and the E_RST, E_TCLK and E_RXTX pins respectively. Please contact Teridian
support for more information regarding the use of the ICE interface for device programming and debug.
Rev. 1.4
13
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相关PDF资料
78M6631-EVM-1
EVAL BOARD 78M6631
78P2351R-DB
BOARD DEMO FOR 78P2351R
79-WHITE-1"X60YD
TAPE GLASS CLOTH 1"X 60YD WHT
79059-2701
CONN RECEPT R/A 50POS 4-40 SCSI
79059-2702
CONN RECEPT R/A 68POS 4-40 SCSI
79059-2726
CONN RECEPT R/A 50POS 2-56 SCSI
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TAPE CLR ESD YEL STRIPE 2"X72YDS
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CONN CHAMP GUIDE PIN .050
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