Datasheet

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APPLICATION INFORMATION
Differences for DIR1703
DIR9001
SLES198 – DECEMBER 2006
The DIR9001 has many improved functions compared to the DIR1703.
The DIR9001 functions are similar to those of the DIR1703.
The DIR9001 pin assignment is equivalent to that of the DIR1703.
The DIR9001 biphase input signal decoding function is almost equivalent to that of the DIR1703.
The differences between the DIR9001 and DIR1703 are shown in Table 12 .
Table 12. Main Differences Between DIR1703 and DIR9001
DIFFERENCE DIR1703 DIR9001
Operational supply-voltage range 3 V to 3.6 V 2.7 V to 3.6 V
Operation temperature range –25 ° C to 85 ° C –40 ° C to 85 ° C
Package SSOP-28P, pin pitch: 0.65 mm TSSOP-28P, pin pitch: 0.65 mm
Clock recovery architecture SpAct™ feature Conventional PLL
IEC60958-3 jitter tolerance Not compliant Compliant
IEC60958 sampling frequency accuracy Level II ( ± 1000 ppm) Level III ( ± 12.5%)
Acceptable sampling frequency 32/44.1/48/88.2/96 kHz, ±1500 ppm 28 kHz to 108 kHz continuous
Biphase input signal level CMOS level 5-V tolerant TTL level
Connection of loop filter Between FILT pin and VCC Between FILT pin and AGND
XTI source clock frequency One of the following clock sources or Optional 24.576-MHz (24.576-MHz clock is
resonators must be connected to the XTI pin: only required to use the internal
4.069/5.6448/6.144/ 8.192/11.2896/12.288/ actual-sampling-frequency calculator or use
16.384/16.9344/18.432/ 22.5792/24.576-MHz the DIR9001 as a 24.576-MHz clock
generator.)
BFRAME H period 32/f
S
8/f
S
Channel status and user data Synchronous with LRCK transition 17-BCK delay from LRCK transition
Latest tracked frequency hold Available Not available
PLL mode clock at error Latest tracked frequency VCO free-running frequency
Clock transition signal out CKTRNS pin, active H CLKST pin, active-high
Oscillation amplifier External feedback resistor (typ. 1 M Ω ) Internal feedback resistor
26
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