PCF5083 datasheet(121/136 Pages) PHILIPS

121 / 136 page

1996 Oct 29

121

Philips Semiconductors

Objective speciﬁcation

GSM signal processing IC

PCF5083

Notes to the AC characteristics

1. Parameters are valid over the specified temperature range.

2. All voltages are measured with respect to ground (VSS). For testing all inputs swing between 0 V and VDD with a

transition time of 4 ns. All time measurements are made with input voltages of 0 V and VDD and output voltages of

0.2VDD and 0.8VDD as appropriate.

3. Test conditions for outputs: CL = 40 pF, except open-drain outputs. Test conditions for open-drain outputs:

CL = 40 pF; IL = 1.8 mA at VDD.

4. All timing diagrams should only be referred to in regard to the edge-to-edge measurements of the timing

specifications. They are not intended as a functional description of the input and output signals. Refer to the

functional description and related timing diagrams for device operation. All setup and hold times are specified with

respect to VIH and VIL. All delay times with respect to 0.5VDD. Times with only typical values are not tested during IC

production

5. For testing the AC characteristics, the low swing input CKI is driven with a square wave signal of the specified

minimum peak-to-peak input voltage swing. The typical values for additional components are: C1 = 4.7 nF,

C2 = 100 pF and R1 =10kΩ.

6. For testing the AC characteristics, the input CLK32I is driven with a standard test signal (see note 2). A typical

application for crystal operation is: R = 10 M

Ω, fQ = 32.768 kHz, C1 = 15 pF, CT = 15 pF (for crystal CL = 12.5 pF).

7. These times are guaranteed by design and are not tested during IC production.

8. DCLK internally divided-by-two to drive the DSP; tDCLKOUT = 1⁄DCLK.

9. This time specified is when PI is empty.

10. This time specified is when PO is full.

11. Not tested in production.

12. Mode 0 and 1, or Mode 2 are selected by register settings. Refer to the functional specification.

13. The output DCL has two different cycle times depending on the DCL period number. Refer to the functional

description. The table lists the cycle times for the 1.536 MHz internal clock mode and the maximum clock frequency

in external clock mode. The minimum cycle times correspond to the 4.096 MHz external clock mode and therefore

apply to all the external clock modes.

14. The Audio Interface timing is given for the non-transparent mode. In transparent mode the IOM®-2 Interface timing

applies to the Audio Interface accordingly, refer to functional description.

PCF5083 bảng dữ liệu(PDF) 121 Page - NXP Semiconductors