isp1302 NXP Semiconductors, isp1302 Datasheet - Page 27

• Manufacturer Part Number: isp1302
• Description: Isp1302 Universal Serial Bus On-the-go Transceiver With Carkit Support
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 30.
ISP1302_1
Product data sheet
Bit
Symbol
Reset
Access
Carkit Control register (address S = 1Ah, C = 1Bh) bit allocation
9.1.2.6 Carkit Control register
R/S/C
7
0
reserved
Table 29.
Table 30
Table 31.
Bit
4
3
2
1
0
Bit
7 to 6
5
4
3
2
1
0
R/S/C
6
0
Symbol
UART_2V8_EN
IDPU_DIS
DP_WKPU_EN
SRP_INIT
REG_BYPASS_
DIS
shows the bit allocation of this register.
Symbol
-
SPKR_MIC_EN
SPKR_L_EN
SPKR_R_BIAS_EN
SPKR_L_BIAS_EN
RX_PULSE_EN
TX_PULSE_EN
Misc Control register (address S = 18h, C = 19h) bit description
Carkit Control register (address S = 1Ah, C = 1Bh) bit description
SPKR_MIC
R/S/C
_EN
5
0
Rev. 01 — 24 May 2007
Description
This bit indicates the output voltage level of the internal regulator.
This bit is only valid when bit UART_EN is logic 1.
When this bit and bit UART_EN are logic 1, the internal regulator
bypass switch will always be disabled, ignoring the value of bit
REG_BYPASS_DIS. This is to ensure that the internal regulator
outputs +2.8 V, when V
0 — Internal regulator outputs 3.3 V
1 — Internal regulator outputs 2.8 V
0 — Internal ID pin pull-up resistor is enabled
1 — Internal ID pin pull-up resistor is disabled
This bit will enable R
support the detection of external accessory devices. This bit is
optional.
0 — Disconnect the DP weak pull-up resistor (R
1 — Connect the DP weak pull-up resistor (R
0 — No event
1 — Initialize SRP, if this bit is set, the following events occur in
sequence: enable DP pull-up for 7.5 ms, enable the VBUS_CHRG
resistor for 32 ms, enable the VBUS_DISCHRG resistor for 13 ms.
This bit will autoclear when the sequence is complete.
0 — Internal regulator bypass switch is turned on, when V
1 — Internal regulator bypass switch is turned off
SPKR_L_
R/S/C
Description
reserved
Enables the speaker right or MIC line switch
Enables the speaker left line switch
Enables the DC bias for the speaker right line
Enables the DC bias for the speaker left line
Enables the data-during-audio receive
Enables the data-during-audio transmit
EN
4
0
SPKR_R_
BIAS_EN
R/S/C
3
0
USB OTG transceiver with carkit support
weakUP(DP)
CC
is 3.0 V to 4.5 V.
SPKR_L_
BIAS_EN
on the DP line. It is provided to
R/S/C
2
0
PULSE_E
R/S/C
weakUP(DP)
RX_
N
1
0
weakUP(DP)
© NXP B.V. 2007. All rights reserved.
ISP1302
…continued
)
TX_PULSE
CC
)
R/S/C
_EN
< 3.6 V
0
0
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