USB97C102 Datasheet, PDF (7/80 Pages) SMSC Corporation – Multi-Endpoint USB Peripheral Controller with Integrated 5 Port HUB

QFP PIN
NUMBER
28
29
26
SYMBOL
RESET_IN
TST_OUT
nTEST
PIN DESCRIPTION
Power on reset; active high
This signal is used by the system to reset the chip. It also generates an
internal POR.
XNOR Chain output
This signal is used for testing the chip via an internal XNOR Chain.
Test input
This signal is a manufacturing test pin. User can pull it high or leave it
unconnected.
BUFFER
TYPE
I
O8
IP
BUFFER TYPE DESCRIPTIONS
BUFFER
I
IP
O8
I/O8
I/O16
O24
I/ODP24
ICLKx
OCLKx
ICLK
IOUSB
Table 2 - USB97C102 Buffer Type Description
DESCRIPTION
Input (no pull-up)
Input 90µA with internal pull-up
Output with 8mA drive
Input/output with 8mA drive
Input/output with 16mA drive
Output, 24mA sink, 12mA source.
Input/Output drain , 24mA sink, 12mA source with 90µA pull-up
XTAL clock input
XTAL clock output
Clock input (TTL levels)
Defined in USB specification V1.1
CODE DEBUGGER INTERFACE
This interface is made available by driving NTEST=0 and TSTOUT=0 (In this mode, TSTOUT is an input of the chip).
In this mode, the pin functions are defined as follows:
QFP PIN
NUMBER
64, 69, 70,
63, 73, 43,
72, 71, 62-
58,
56-54
42
66
112-115,
117-120
44
75
74
68
65
SYMBOL
FA[15:0]
NFRD
NFWR
FD[7:0]
nFCE
FA19
FA18
FA17
FA16
PIN DESCRIPTION
8051 Address Bus
Data Read Strobe; active low
Data Write; active low
Data Bus
8051 T1IN timer signal
8051 T0IN timer signal
8051 WAKE interrupt signal
8051 INT1 interrupt signal
8051 INT0 interrupt signal
BUFFER
TYPE
I
I
I
I/O8
O8
O8
O8
O8
O8
SMSC DS – USB97C102
Page 7
Rev. 03/23/2000