AccessRunner ADSL-USB Modem Device Set Data Sheet
Table 3-1. P5200 UIC Hardware Signal Definitions (Continued)
Label
Pin
I/O
I/O Type
Signal Name/Description
NOT USED
Not Used. Connect to GND through 1 KΩ.
HC10
94
I
It
Address Lines 20-10. If Flash ROM is installed, connect to Flash
HAD[29:19]
40-46, 49-52
O
Ot4
ROM A[20:10], respectively. If Flash ROM is not installed, leave open.
Flash ROM Chip Enable. Active low output enables optional Flash
ROM when asserted. If Flash ROM is installed, connect to Flash ROM
CE#. If Flash ROM is not installed, leave open.
HC00 (GPIO32)
93
O
O
Ot4
Flash ROM Reset. Active low output resets optional Flash ROM
when asserted. If Flash ROM is installed, connect to Flash ROM
RESET#. If Flash ROM is not installed, leave open.
FLASH_RST#
(GPIO23)
97
Ot4
Not Used. Leave open.
HC11 (GPIO33)
HAD31 (GPIO37)
TREQA
90
I/O
I/O
I
It/Ot4
Not Used. Leave open.
69
It/Ot4
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved. This pin is connected to internal circuitry. Leave open.
Reserved. These pins are connected to internal circuitry. Leave open.
36
Itpd
Reserved (GPIO06)
Reserved (GPIO17)
Reserved (GPIO25)
157
I/O
I/O
I/O
Itpu/Ot4
Itpu/Ot4
Itpu/Ot4
175
68
Reserved
13-15, 18-20, 24
NOTES:
I/O Types: See Table 3-2.
Table 3-2. P5200 UIC Input/Output Type Descriptions
I/O Type
Description
It
Digital input, +5V tolerant, C = 8 pF
IN
It/Ot4
Ith
Digital input, +5V tolerant, C = 8 pF/Digital output, 4 mA, Z
IN
Digital input, +5V tolerant, with hysteresis, C = 8 pF
IN
= 80 Ω
INT
Itpd
Digital input, +5V tolerant, 75k Ω pull-down, C = 8 pF
IN
Itpu
Digital input, +5V tolerant, 75k Ω pull-up, C = 8 pF
IN
Itpu/Ot4
Otts4
Digital input, +5V tolerant, 75k Ω pull-up, C = 8 pF/Digital output, 4 mA, Z
IN
= 80 Ω
INT
Digital output, 3-State, 4 mA, Z
=80 Ω
INT
Input, USB receiver/Output, USB driver
Iu/Ou
NOTES:
1. See DC characteristics in Table 3-3.
2. I/O Type corresponds to the device Pad Type. The I/O column in tables refers to signal I/O direction used in the application.
Conexant
100427B
3-7
CONEXANT [ CONEXANT SYSTEMS, INC ]
