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TSA5059 Datasheet(PDF) 8 Page - NXP Semiconductors |
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TSA5059 Datasheet(HTML) 8 Page - NXP Semiconductors |
8 / 24 page 1999 Oct 05 8 Philips Semiconductors Preliminary specification 2.7 GHz I2C-bus controlled low phase noise frequency synthesizer TSA5059 READ mode: R/W=1 Data can be read out of the TSA5059 by setting the bit R/W to logic 1 (see Table 5). After the slave address has been recognized, the TSA5059 generates an acknowledge pulse and the first data byte (status word) is transferred on the SDA line (MSB first). Data is valid on the SDA line during a HIGH-level of the SCL clock signal. A second data byte can be read out of the TSA5059 if the controller generates an acknowledge on the SDA line. End of transmission will occur if no acknowledge from the controller occurs.The TSA5059 will then release the data line to allow the controller to generate a STOP condition. When ports P0 to P2 are used as inputs, they must be programmed in their high-impedance state. The POR flag is set to logic 1 when VCC drops below approximately 2.75 V and at power-on. It is reset to logic 0 when an end of data is detected by the TSA5059 (end of a READ sequence). Control of the loop is made possible with the in-lock flag which indicates (bit FL = 1) when the loop is phase-locked. The bits I2, I1 and I0 represent the status of the I/O ports P2, P1 and P0 respectively. A logic 0 indicates a LOW-level and a logic 1 indicates a HIGH-level. A built-in 5-level ADC is available at pin ADC. This converter can be used to feed AFC information to the microcontroller through the I2C-bus. The relationship between bits A2, A1, A0 and the input voltage at pin ADC is given in Table 7. Table 5 Read data format Note 1. MSB is transmitted first. Table 6 Explanation of Table 5 Table 7 ADC levels Note 1. Accuracy is ±0.03VCC. BYTE DESCRIPTION MSB(1) LSB CONTROL BIT 1 address 1 1000 MA1 MA0 1 A 2 status byte POR FL I2 I1 I0 A2 A1 A0 − BIT DESCRIPTION A acknowledge bit MA1 and MA0 programmable address bits; see Table 3 POR Power-on reset flag (bit POR = 1 on power-on) FL in-lock flag (bit FL = 1 when the loop is phase-locked) I2, I1 and I0 digital information for I/O ports P2, P1 and P0 respectively A2, A1 and A0 digital outputs of the 5-level ADC; see Table 7 A2 A1 A0 VOLTAGE APPLIED TO PIN ADC(1) 1 0 0 0.6VCC to VCC 0 1 1 0.45VCC to 0.6VCC 0 1 0 0.3VCC to 0.45VCC 0 0 1 0.15VCC to 0.3VCC 0 0 0 0 to 0.15VCC |
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