XR17V358 Datasheet, PDF (8/68 Pages) Exar Corporation – HIGH PERFORMANCE OCTAL PCI EXPRESS UART

XR17V358
PRELIMINARY
HIGH PERFORMANCE OCTAL PCI EXPRESS UART
PIN DESCRIPTIONS
REV. P1.0.2
NAME
EN485#
ENIR#
TEST0
TEST1
TEST2
VCC33
VCC33A
VCC33P
VCC33B
VCC12
VCC12A
GND
NC
PIN #
TYPE
DESCRIPTION
C10
I Auto RS-485 mode enable (active low). This pin is sampled during power up,
following a hardware reset (RST#) or soft reset (register RESET). It can be
used to start up all 8 UARTs in the Auto RS-485 Half-Duplex Direction control
mode. The sampled logic state is transferred to FCTR bit-5 in the UART
channel.
B10
I Infrared mode enable (active low). This pin is sampled during power up, fol-
lowing a hardware reset (RST#) or soft-reset (register RESET). It can be
used to start up all 8 UARTs in the infrared mode. The sampled logic state is
transferred to MCR bit-6 in the UART.
F2
I Factory Test Modes. For normal operation, connect to GND.
B11
I
A11
I
D5, D9, E12,
J12, M7
Pwr 3.3V I/O power supply.
K3
Pwr 3.3V analog PHY power supply. A ferrite bead is recommended on this pin.
B13, C13
Pwr 3.3V power supply voltage for output stage of buck regulator.
B14, B15
Pwr 3.3V power supply for the analog blocks of the buck regulator.
D7, D11, E4,
G12, K4, L12,
M9
Pwr 1.2V core power supply. A ferrite bead is recommended on these pins.
K2
Pwr 1.2V analog PHY power supply. A ferrite bead is recommended on this pin.
A4, A8, A12,
B12, C12, D4,
D6, D8, D10,
D12, F1, F4,
F12, G3, H1,
H2, H12, H15,
J3, J4, K1, K12,
L4, M1, M6,
M8, M10, M15,
R4, R8, R12
Pwr Power supply common, ground.
A1, A15, R1,
R15
- No internal connection.
NOTE: Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain, OT=Output Tristate, IS=Input Schmitt
Trigger.
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