SmartHSF Mobile Modem Data Sheet
CDMA Interface
Twelve lines, defined by the installed cell phone driver software, are available to support the CDMA cellular phone interface:
• Panel 1
• Panel 2
• CB
• CF
• CJ
• CC
• CE
• CD
• Control RXD
• Control TXD
• BB (USART IN)
• BA (USART OUT)
GSM Interface
Five lines, defined by the installed cell phone driver software, are available to support the GSM phone interface:
• DA(IN)
• RX-A
• TX-A
• TX-A
• RX2-B USART
• TX2-B USART
3.1.2 HSD Interface Signals, Pin Assignments, and Signal Definitions
The CX11250 HSD 100-pin TQFP hardware interface signals are shown by major interface in Figure 3-1, are shown by pin
number in Figure 3-2, and are listed by pin number in Table 3-1.
The CX11250 HSD hardware interface signals are defined in Table 3-2.
Cell phone/telephone line interface signal assignments are listed in Table 3-3.
100553B
Conexant
3-3