AccessRunner ADSL-USB Modem Device Set Data Sheet
65, 70, 73-80,
Table 3-1. P5200 UIC Hardware Signal Definitions
USB Port. USBP and USBN are the differential data positive and
negative signals of the USB port. Connect USBP and USBN to USB
+Data and -Data, respectively, through 10 Ω, and optionally through a
quick switch in order to isolate the USBP and USBN from the USB
during suspend mode.
USB Resume. Active high input used to detect occurrence of USB
USB POWER DETECT INTERFACE
USB 5 V Detect. Active high input used to detect presence of +5 V at
the USB connector.
Clock In. Connect to 35.328 MHz voltage controlled crystal oscillator
(VCXO) output through 51 Ω.
Reset. Active low input signal to reset the P5200 UIC. Connect to
Boot Option. To boot from internal ROM, leave open. To boot from
external ROM, pull down with 4.7k Ω resistor. Leave open.
PLL Ground. Connect to GND through 4.7 kΩ.
CX20431 AFE CONTROL AND SERIAL INTERFACE
AFE Clock In. Connect to AFE STROBE through 33 Ω.
AFE Strobe Out. Connect to AFE CTRL_STRB.
AFE Control In. Serial digital data sent to the AFE. Connect to AFE
AFE Control Out. Serial digital data received from the AFE. Connect
to AFE CTRL_OUT.
AFE Wakeup. DSL Power Management Wakeup Signal from AFE.
Connect to AFE WAKEUP.
CX11627 ADDP PARALLEL INTERFACE
Address Lines 9-7. Connect to ADDP A[9:7], respectively.
Address Lines 6-0. Connect to ADDP A[6:0], respectively.
Data Lines 15-00. Connect to ADDP D[15:0], respectively.
Read Enable. Active low read enable. When asserted, data is
transferred from the selected device onto the data bus. Connect to
Write Enable. Active low write enable. When asserted, data is
transferred from the data bus into the selected device. Connect to
ADDP Chip Select. Active low output select ADDP when asserted.
Connect to ADDP CSB.
ADDP Interrupt Request 1. Active low input asserted to request
interrupt servicing by the ADDP. Connect to ADDP IRQ1.
ADDP Interrupt Request 2. Active low input asserted to request
interrupt servicing by the ADDP. Connect to ADDP IRQ2.
ADDP Power Down. Active low output asserted put ADDP in a low
power mode. Connect to ADDP PWR_DWN.
ADDP Reset. Active low output resets ADDP when asserted. Connect
to ADDP RSTB.
Scan Mode. Connect to ADDP SSCANMODE.