ISP1109BS 查看數據表（PDF） - Philips Electronics
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ISP1109BS Datasheet PDF : 59 Pages
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Philips Semiconductors
ISP1109
USB transceiver with carkit support
Table 10: ISP1109 power modes: summary
VCC
off
VCC(I/O)
off
VBUS
X
PWR_DN (bit)
X
off
on
X
X
on
off
on
off
on
on
<Vth(svc)
X
>Vth(svc)
X
X
0
on
on
X
1
ICC < 20 µA
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 shows the pin states in disable or isolate mode.
Table 11: ISP1109 pin states in disable or isolate mode
Pin name
VCC, REG3V3
VCC(I/O), VREF
ISET
Disable mode
(VCC = on, VCC(I/O) = off)
powered
not present
drive HIGH or LOW
DP
high-Z
DM
15 kΩ pull-down enabled
RCV
high-Z
VP, VM, SPI_MISO, UART_RXD
high-Z
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
high-Z
MIC, SPKR_R, SPKR_L, ID, VBUS
ID_PU
high-Z
VREF (high-Z, if voltage on
pin ID > VREF)
Isolate mode
(VCC = off, VCC(I/O) = on)
not present
powered
high-Z
high-Z
high-Z
drive LOW
drive HIGH
high-Z
high-Z
VREF (high-Z, if voltage on
pin ID > VREF)
8.2 Serial control modes
8.2.1 I2C-bus mode
In I2C-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 I2C-bus
slave function. An external I2C-bus master can access the internal registers of the
ISP1109 through the I2C-bus interface.
The supported I2C-bus bit rate is up to 400 kbit/s. The I2C-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.
9397 750 13355
Product data sheet
Rev. 01 — 14 July 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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