CYP15G0101DXB_11 Datasheet, PDF (28/44 Pages) Cypress Semiconductor – Single-channel HOTLink II Transceiver Compliant to multiple standards

CYP15G0101DXB
CYV15G0101DXB
CYP(V)15G0101DXB AC Characteristics
Over the Operating Range (continued)
Parameter
Description
t_RREFDA[43]
Receive data access time from REFCLK (RXCKSEL = LOW)
t_RREFDV
Receive data valid time from REFCLK (RXCKSEL = LOW)
t_REFDV–
Received data valid time to RXCLK (RXCKSEL = LOW)
t_REFDV+
Received data valid time from RXCLK (RXCKSEL = LOW)
t_REFCDV–
Received data valid time to RXCLKC (RXCKSEL = LOW)
t_REFCDV+
t_REFRX[41, ^42]
Received data valid time from RXCLKC (RXCKSEL = LOW)
REFCLK frequency referenced to extracted received clock frequency
Transmit Serial Outputs and TX PLL Characteristics
Min
–
2.5
10UI – 4.7
0.5
10UI – 4.3
–0.2
–1500
t_B
t_RISE[42]
Bit time
CML output rise time 20%–80% (CML test load)
SPDSEL = HIGH
SPDSEL = MID
5100
60
100
t_FALL[42]
CML output fall time 80%–20% (CML test load)
SPDSEL = LOW
180
SPDSEL = HIGH
60
SPDSEL = MID
100
t_DJ[42, ^{44, 46]}
t_RJ[42, ^{45, 46]}
Deterministic Jitter (peak-peak)
Random Jitter (σ)
t_TXLOCK
Transmit PLL lock to REFCLK
Receive Serial Inputs and CDR PLL Characteristics
SPDSEL = LOW
180
IEEE 802.3z^[47]
–
IEEE 802.3z^[47]
–
–
t_RXLOCK
Receive PLL lock to input data stream (cold start)
–
Receive PLL lock to input data stream
–
t_RXUNLOCK
Receive PLL unlock rate
t_JTOL[46]
Total jitter tolerance
t_DJTOL[46]
Deterministic jitter tolerance
Capacitance^[42]
–
IEEE 802.3z^[47]
600
IEEE 802.3z^[47]
370
Parameter
Description
Test Conditions
C_INTTL
C_INPECL
TTL input capacitance
PECL input capacitance
T_A = 25 °C, f₀ = 1 MHz, V_CC = 3.3 V
T_A = 25 °C, f₀ = 1 MHz, V_CC = 3.3 V
Max
9.5
–
–
–
–
–
+1500
666
270
500
1000
270
500
1000
25
11
200
376K
376K
46
–
–
Max
7
4
Unit
ns
ns
ns
ns
ns
ns
ppm
ps
ps
ps
ps
ps
ps
ps
ps
ps
us
UI^[48]
UI
UI
ps
ps
Unit
pF
pF
Notes
41. REFCLK has no phase or frequency relationship with the recovered clock(s) and only acts as a centering reference to reduce clock synchronization time. REFCLK
must be within ±1500 ppm (±0.15%) of the remote transmitter’s PLL reference (REFCLK) frequency. Although transmitting to a HOTLink II receiver necessitates
the frequency difference between the transmitter and receiver reference clocks to be within ±1500 ppm, the stability of the crystal needs to be within the limits
specified by the appropriate standard when transmitting to a remote receiver that is compliant to that standard. For example, to be IEEE 802.3z Gigabit Ethernet
compliant, the frequency stability of the crystal needs to be within ±100 ppm.
42. Tested initially and after any design or process changes that may affect these parameters, but not 100% tested.
43. Since this timing parameter is greater than the minimum time period of REFCLK it sets an upper limit to the frequency in which REFCLKx can be used to clock
the receive data out of the output register. For predictable timing, users can use this parameter only if REFCLK period is greater than sum of t_RREFDA and set-up
time of the upstream device. When this condition is not true, RXCLKC± or RXCLKA± (a buffered or delayed version of REFCLK when RXCKSELx = LOW) could
be used to clock the receive data out of the device.
44. While sending continuous K28.5s, outputs loaded to a balanced 100Ω load, measured at the cross point of the differential outputs over the operating range.
45. While sending continuous K28.7s, after 100,000 samples measured at the cross point of differential outputs, time referenced to REFCLK input, over the operating
range.
46. Total jitter is calculated at an assumed BER of 1E − 12. Hence: Total Jitter (t_J) = (t_RJ * 14) + t_DJ.
47. Also meets all Jitter Generation and Jitter Tolerance requirements as specified by SMPTE 259M, SMPTE 292M, CPRI, ESCON, FICON, Fibre Channel and
DVB-ASI.
48. Receiver UI (Unit Interval) is calculated as 1/(f_REF * 20)(when RXRATE = HIGH)or1/(f_REF * 10) (when RXRATE = LOW) if no data is being received, or 1/(f_REF * 20)(when
RXRATE = HIGH) or 1/(f_REF * 10) (when RXRATE = LOW) of the remote transmitter if data is being received. In an operating link this is equivalent to t_B
Document Number: 38-02031 Rev. *M
Page 28 of 44
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