CX28398 Conexant Systems, CX28398 Datasheet - Page 21

• Manufacturer Part Number: CX28398
• Description: (CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers
• Manufacturer: Conexant Systems

CX28394/28395/28398
Quad/x16/Octal—T1/E1/J1 Framers
100054E
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
Tables 1-1
lists all other pin assignments.
the hardware signals.
remain unconnected if the active high input state is desired:
A[7:0]
MOTO*
SYNCMD
TDI (CX28394/28398)
TDI1, TDI2 (CX28395) JTAG unused if not connected.
TMS
TCK
TRST*
RST*
SERDI
Figures 1-7
The following input pins contain an internal pullup resistor (>50 k ) and may
through
through
1-4
Conexant
summarize pin assignments for system bus pins.
1-12
Address lines unused in INTEL bus mode.
Pullup selects INTEL bus mode if unconnected.
Pullup selects synchronous processor interface.
JTAG unused if not connected.
JTAG unused if not connected.
Disables JTAG if not connected.
Disables JTAG reset if not connected.
Disables hardware reset if not connected.
May be left unconnected if not used.
illustrate the devices’ logic, and
Figures 1-2
1.0 Product Description
through
Table 1-6
1.2 Pin Assignments
1-6
Table 1-5
defines
and
1-3