DS1086LPMB1 Peripheral Module General Description Features The DS1086LPMB1 peripheral module provides the S User-Programmable 130kHz to 66.6MHz Square necessary hardware to interface the DS1086L 3.3V Wave spread-spectrum EconOscillatorK to any system that S No External Timing Components Required utilizes PmodK-compatible expansion ports configurable 2 S 6-Pin Pmod-Compatible Connector (I C) 2 for I C communication. The DS1086L is a program- S Example Software Written in C for Portability mable clock generator that produces a spread-spectrum (dithered) square-wave output of frequencies from S Secondary Header Allows Daisy-Chaining of 130kHz to 66.6MHz. The selectable dithered output 2 Additional Modules on the I C Bus reduces radiated-emission peaks by dithering the S Output Header Provides Access to Control Signals frequency 0.5%, 1%, 2%, 4%, or 8% below the for External Circuitry programmed frequency. The DS1086L has a power-down S RoHS Compliant mode and an output-enable control for power-sensitive applications. S Proven PCB Layout Refer to the DS1086L IC data sheet for detailed informa- S Fully Assembled and Tested tion regarding operation of the IC. Ordering Information appears at end of data sheet. DS1086LPMB1 Peripheral Module EconOscillator is a trademark of Maxim Integrated Products, Inc. Pmod is a trademark of Digilent Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrateds website at www.maximintegrated.com. 19-6318 Rev 0 5/12DS1086LPMB1 Peripheral Module Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION J3 1 5-pin straight male header 0.01FF Q10%, 16V X7R ceramic C1 1 capacitor (0603) R1, R2, R8, 5 4.7kI Q5% resistors (0603) Murata GRM188R71C103KA01D R9, R10 R3, R4, R5 3 1kI Q5% resistors (0603) 0.1FF Q10%, 16V X7R ceramic C2 1 capacitor (0603) R6, R7 2 150kI Q5% resistors (0603) Murata GRM188R71C104KA01D 3.3V spread-spectrum U1 1 EconOscillator (8 FSOP) 12-pin (2 x 6) right-angle male J1 1 Maxim DS1086LU+ header J2 1 8-pin (2 x 4) straight male header 1 PCB: EPCB1086L Component Supplier SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Note: Indicate that you are using the DS1086LPMB1 when contacting this component supplier. 2 Table 1. Connector J1 (I C Communication) Detailed Description PIN SIGNAL DESCRIPTION 2 I C Interface Power-down. When the pin is high, the The DS1086LPMB1 peripheral module can interface to output buffer is enabled. When the pin the host in one of two ways. It can plug directly into a 1 PDN is low, the master oscillator is disabled 2 Pmod-compatible port (configured for I C) through con- (power-down mode). 2 nector J1, or in this case, other I C boards can attach to 2 the same I C bus through connector J2. Dither enable. When the pin is high, the 2 SPRD dither is enabled. When the pin is low, 2 I C Interface the dither is disabled. (Daisy-Chaining Modules) 2 3 SCL I C serial clock Alternatively, the peripheral module can connect to other 2 2 4 SDA I C serial data I C-based Pmod modules using a 4-conductor ribbon cable connecting to the J2 connector. In this situation, 5 GND Ground 2 pins 1-4 and 5-8 of J2 provide two connections to the I C 6 VCC Power supply 2 bus, allowing the module to be inserted into an I C bus Output enable. When the pin is high, daisy-chain. the output buffer is enabled. When the 7 OE Connector J1 provides connection of the module to the pin is low, the output is disabled but the Pmod host. The pin assignments and functions adhere master oscillator is still on. to the Pmod standard recommended by Digilent. See 8 N.C. Not connected Table 1. 2 9 SCL I C serial clock The J2 connector allows the module to be connected 2 10 SDA I C serial data 2 through a daisy-chain from another I C module and/or 11 GND Ground 2 2 provide I C and power connections to other I C modules 12 VCC Power supply on the same bus. See Table 2. Maxim Integrated 2