ISP1508AET NXP Semiconductors, ISP1508AET Datasheet - Page 27

• Manufacturer Part Number: ISP1508AET
• Description: RF Transceiver USB 2.0 ULPI TRNSCVR
• Manufacturer: NXP Semiconductors

Specifications of ISP1508AET

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935283548118 ISP1508AET-T

NXP Semiconductors
Table 14.
ISP1508A_ISP1508B_1
Product data sheet
Signaling mode
General settings
3-state drivers
Power-up or V
V
Host settings
Host chirp
Host high-speed
Host full-speed
Host high-speed or
full-speed suspend
Host high-speed or
full-speed resume
Host low-speed
Host low-speed
suspend
Host low-speed
resume
Host Test J or Test K 00b
Peripheral settings
Peripheral chirp
Peripheral
high-speed
Peripheral full-speed 01b
B_SESS_END
Operating states and their corresponding resistor settings
BUS
9.3 USB state transitions
<
Register settings
XCVR
SELECT
[1:0]
XXb
01b
00b
00b
X1b
01b
01b
10b
10b
10b
00b
00b
A Hi-Speed USB peripheral, host or OTG device handles more than one electrical state as
defined in Universal Serial Bus Specification Rev. 2.0 and On-The-Go Supplement to the
USB 2.0 Specification Rev. 1.2 . The ISP1508 accommodates various states through
register settings of the XCVRSELECT[1:0], TERMSELECT, OPMODE[1:0],
DP_PULLDOWN and DM_PULLDOWN bits.
Table 14
force resistor settings as also given in
follows:
It is up to the link to set the desired register settings.
•
•
•
•
RPU_DP_EN enables the 1.5 k pull-up resistor on DP
RPD_DP_EN enables the 15 k pull-down resistor on DP
RPD_DM_EN enables the 15 k pull-down resistor on DM
HSTERM_EN enables the 45
summarizes operating states. The values of register settings in
TERM
SELECT
Xb
0b
0b
0b
1b
1b
1b
1b
1b
1b
0b
1b
0b
1b
OPMODE
[1:0]
01b
00b
10b
00b
00b
00b
10b
00b
00b
10b
10b
10b
00b
00b
Rev. 01 — 14 August 2007
DP_
PULL
DOWN
Xb
1b
1b
1b
1b
1b
1b
1b
1b
1b
1b
0b
0b
0b
termination resistors on DP and DM
Table
DM_
PULL
DOWN
Xb
1b
1b
1b
1b
1b
1b
1b
1b
1b
1b
0b
0b
0b
14. Resistor setting signals are defined as
ISP1508A; ISP1508B
Internal resistor settings
RPU_DP
_EN
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
1b
0b
1b
RPD_DP
_EN
0b
1b
1b
1b
1b
1b
1b
1b
1b
1b
1b
0b
0b
0b
ULPI HS USB transceiver
RPD_
DM_EN
0b
1b
1b
1b
1b
1b
1b
1b
1b
1b
1b
0b
0b
0b
© NXP B.V. 2007. All rights reserved.
Table 14
HSTERM_
EN
0b
0b
1b
1b
0b
0b
0b
0b
0b
0b
1b
0b
1b
0b
will
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