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)： 16/59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
16 of 59
Philips Semiconductors
ISP1109
USB transceiver with carkit support
Table 11
shows the pin states in disable or isolate mode.
8.2 Serial control modes
8.2.1
I
2
C-bus mode
In I
2
C-bus mode, an external System-on-a-Chip (SoC) directly communicates with the
serial controller through the SCL and SDA lines. The serial controller has a built-in I
2
C-bus
slave function. An external I
2
C-bus master can access the internal registers of the
ISP1109 through the I
2
C-bus interface.
The supported I
2
C-bus bit rate is up to 400 kbit/s. The I
2
C-bus device address is
010 110Xb, where X is determined by pin 13.
8.2.2
SPI mode
In this mode, an external SoC directly communicates with the serial controller through the
SPI interface: SPI_MOSI, SPI_MISO, SPI_CLK, SPI_CS. The serial controller has a
built-in SPI slave function. An external SPI master can access the internal registers of the
ISP1109 through the SPI interface. The maximum SPI clock rate is 26 MHz.
Table 10:
V
CC
off
off
on
on
on
on
ISP1109 power modes: summary
V
CC(I/O)
V
BUS
off
X
on
X
off
<V
th(svc)
off
>V
th(svc)
on
X
on
X
PWR_DN (bit)
X
X
X
X
0
1
I
CC
< 20
μ
A
yes
yes
yes
no
no
yes
ISET (pin)
high-Z
high-Z
LOW
LOW or HIGH
LOW or HIGH
LOW or HIGH
Comment
power off
isolate mode
disable mode (Power-down)
disable mode (ISET operation)
normal mode (full operation)
normal mode (Power-down)
Table 11:
Pin name
ISP1109 pin states in disable or isolate mode
Disable mode
(V
CC
= on, V
CC(I/O)
= off)
powered
not present
drive HIGH or LOW
high-Z
15 k
pull-down enabled
high-Z
high-Z
high-Z
Isolate mode
(V
CC
= off, V
CC(I/O)
= on)
not present
powered
high-Z
high-Z
high-Z
drive LOW
drive HIGH
high-Z
V
CC
, REG3V3
V
CC(I/O)
, V
REF
ISET
DP
DM
RCV
VP, VM, SPI_MISO, UART_RXD
RESET_N, SPEED, SUSPEND,
SPI_I2C_SEL, SPI_MOSI/I2C_SDA,
SPI_CLK/I2C_CLK, SPI_CS/I2C_ADR,
SE0/VM, DAT/VP, UART_TXD, INT_N
MIC, SPKR_R, SPKR_L, ID, V
BUS
ID_PU
high-Z
V
REF
(high-Z, if voltage on
pin ID > V
REF
)
high-Z
V
REF
(high-Z, if voltage on
pin ID > V
REF
)
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