CS5535 datasheet(540/555 Pages) NSC

540 / 555 page

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540

Revision 0.8

Electrical Specifications (Continued)

6.3.6

USB Signals

All signals detailed in this sub-section use an “IDE” buffer

type. For a detailed explanation of buffer types, see Table

2-4 "Buffer Type Characteristics" on page 28.

In this subsection, unless otherwise noted:

• All timing specifications are specified under the oper-

ating conditions listed in Table 6-3 on page 526 (i.e.,

VCORE and VCORE_VSB = All; VIO and VIO_VSB = All;

TCASE = All).

Table 6-14. USB Timing Parameters

Signal

Parameter

Min

Max

Units

Comment/Condition

USB_PWR_EN1,

USB_PWR_EN2

USB_OC_SENS#

Differential Pair:

USB1_1_DATPOS,

USB1_1_DATNEG,

Differential Pair:

USB1_2_DATPOS,

USB1_2_DATNEG,

Differential Pair:

USB2_1_DATPOS,

USB2_1_DATNEG

usb2_portdn1

Differential Pair:

USB2_2_DATPOS,

USB2_2_DATNEG

Async Output or Level

No clock reference.

Async Input

No clock reference.

Output Rise and Fall

Times (full speed)

Note 1, Note 2, and Note 3.

Output Rise and Fall

Times (low speed)

300

Note 1, Note 2, and Note 4. Measured at

the downstream host end.

Note 1. Rise time and fall time defined in Figure 6-8 "USB Output Parameter Definition" on page 541.

Note 2. The rise and fall time values for a given differential pair are matched within 10%. Edges are monotonic.

Note 3. Actual value is adjustable. Values in this table require CADJ[4:0] = 0x10b:

--XMIT2_CADJ: USBC1 MSR 51600008h[13:9] and USBC2 MSR 51200008h[4:0];

--(XMIT1_CADJ: USBC1 MSR 51600008h[7:5] and USBC2 MSR 51200008h[7:5].

Note 4. The rise and fall time values for a given differential pair are matched within 20%. Edges are monotonic.

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