CX28394/28395/28398
1.0 Product Description
Quad/x16/Octal—T1/E1/J1 Framers
1.2 Pin Assignments
1.2 Pin Assignments
The CX28394 is packaged in a 128-pin Quad Flat Pack (TQFP). The CX28395 is
packaged in a 318-pin Ball Grid Array (BGA) multi-chip module (MCM). The
CX28398 has two package alternatives: a 208-pin Quad Flat Pack (MQFP) and a
272-pin BGA. Pinout diagrams are provided in Figures 1-2 through 1-6 and
Tables 1-1 through 1-4 summarize pin assignments for system bus pins. Table 1-5
lists all other pin assignments.
Figures 1-7 through 1-12 illustrate the devices’ logic, and Table 1-6 defines
the hardware signals.
The following input pins contain an internal pullup resistor (>50 kΩ) and may
remain unconnected if the active high input state is desired:
A[7:0]
MOTO*
SYNCMD
TDI (CX28394/28398)
Address lines unused in INTEL bus mode.
Pullup selects INTEL bus mode if unconnected.
Pullup selects synchronous processor interface.
JTAG unused if not connected.
TDI1, TDI2 (CX28395) JTAG unused if not connected.
TMS
JTAG unused if not connected.
TCK
Disables JTAG if not connected.
Disables JTAG reset if not connected.
Disables hardware reset if not connected.
May be left unconnected if not used.
TRST*
RST*
SERDI
100054E
Conexant
1-3
CONEXANT [ CONEXANT SYSTEMS, INC ]
