參數(shù)資料
型號： ISP1109
廠商： NXP Semiconductors N.V.
英文描述： Universal Serial Bus transceiver with carkit support
中文描述： 與車載通用串行總線收發(fā)器支持
文件頁數(shù)： 18/59頁
文件大小： 295K
代理商： ISP1109
9397 750 13355
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 14 July 2005
18 of 59
Philips Semiconductors
ISP1109
USB transceiver with carkit support
If UART_PIN_SEL = 1:
–
For the TxD signal: From SE0/VM (V
CC(I/O)
level) to DM (REG3V3 level)
–
For the RxD signal: From DP (REG3V3 level) to DAT/VP (REG3V3 level).
The ISP1109 is in transparent UART mode, if bit UART_EN of the Mode Control 1 register
is set.
8.4.2
Transparent audio mode
In transparent audio mode, the ISP1109 will disable its DP and DM driver. The carkit
interrupt detector is enabled. The built-in analog switches will be tuned based on the
selection of carkit audio mode:
Stereo mode: SPKR_L on DM and SPKR_R on DP
Mono and MIC mode: SPKR_L on DM and MIC on DP.
The ISP1109 is in transparent audio mode, if bit UART_EN of the Mode Control 1 register
is cleared, and bit AUDIO_EN of the Audio Control register is set.
8.4.3
Transparent general-purpose buffer mode
In transparent general-purpose buffer mode, the DAT/VP and SE0/VM pins are connected
to the DP and DM pins, respectively. Using bits TRANSP_BDIR1 and TRANSP_BDIR0 of
the Mode Control 2 register as specified in
Table 14
, you can control the direction of data
transfer. The ISP1109 is in transparent general-purpose buffer mode if bit UART_EN = 0,
bit AUDIO_EN = 0, and bit TRANSP_EN = 1.
Table 13
provides a summary of the device operating modes.
Table 13:
Mode
Summary of device operating modes
Bit
UART_EN
0
Transparent
general purpose
buffer mode
Description
UART_PIN_SEL
X
X
AUDIO_EN
0
0
AUDIO_MONO
X
X
TRANSP_EN
0
1
USB mode
USB ATX enabled
USB ATX disabled.
SE0/VM
DM
DAT/VP
DP
See
Table 14
USB ATX disabled.
SPKR_L
→
DM
SPKR_R
→
DP
USB ATX disabled.
SPKR_L
→
DM
MIC
←
DP
USB ATX disabled.
UART_TXD
→
DM
UART_RXD
←
DP
USB ATX disabled.
SE0/VM
→
DM
DAT/VP
←
DP
0
Transparent Audio
mode (stereo)
0
X
1
0
X
Transparent Audio
mode (mono)
0
X
1
1
X
TransparentUART
mode (mode 1)
1
0
X
X
X
TransparentUART
mode (mode 2)
1
1
X
X
X
相關PDF資料
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