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XRT94L33 Datasheet(PDF) 3 Page - Exar Corporation |
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XRT94L33 Datasheet(HTML) 3 Page - Exar Corporation |
3 / 465 page xr XRT94L33 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET Rev.1.2.0. 3 PIN DESCRIPTION of the XRT94L33 (Rev. B) PIN # SIGNAL NAME I/O SIGNAL TYPE DESCRIPTION MICROPROCESSOR INTERFACE Y22 PCLK I TTL Microprocessor Interface Clock Input: This clock input signal is only used if the Microprocessor Interface has been configured to operate in one of the Synchronous Mode (e.g., Power PC 403 Mode). If the Microprocessor Interface is configured to operate in one of these modes, then it will use this clock signal to do the following. • To sample the CS*, WR*/R/W*, A[14:0], D[7:0], RD*/DS* and DBEN input pins, and • To update the state of D[7:0] and the RDY/DTACK output signals. NOTES: 1. The Microprocessor Interface can work with µPCLK frequencies ranging up to 33MHz. 2. This pin is inactive if the user has configured the Microprocessor Interface to operate in either the Intel- Asynchronous or the Motorola-Asynchronousl Modes. In this case, the user should tie this pin to GND. AD25 AD23 AC21 PTYPE_0 PTYPE_1 PTYPE_2 I TTL Microprocessor Type Select input: These three input pins permit the user to configure the Microprocessor Interface block to readily support a wide variety of Microprocessor Interfaces. The relationship between the settings of these input pins and the corresponding Microprocessor Interface configuration is presented below. PTYPE[2:0] Microprocessor Interface Mode 000 Intel-Asynchronous Mode 001 Motorola – Asynchronous Mode 010 Intel X86 011 Intel I960 100 IDT3051/52 (MIPS) 101 Power PC 403 Mode 111 Motorola 860 |
Similar Part No. - XRT94L33_06 |
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Similar Description - XRT94L33_06 |
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