XRT83L38 Datasheet, PDF (11/91 Pages) Exar Corporation – OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

XRT83L38
OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. 1.0.0
SIGNAL NAME
RXRES1
RXRES0
TQFP
PIN #
81
82
BGA
LEAD #
TYPE
DESCRIPTION
Receive External Resistor Control Pins - Hardware mode
R10
I Receive External Resistor Control Pin 1:
V10
Receive External Resistor Control Pin 0:
These pins determine the value of the external Receive fixed resistor
according to the following table:
RXRES1
0
0
1
1
RXRES0
0
1
0
1
Required Fixed External
RX Resistor
No External Fixed Resistor
240Ω
210Ω
150Ω
RCLKE
133
J16
µPTS1
133
J16
TRANSMITTER SECTIONS
NOTE: These pins are internally pulled “Low” with a 50kΩ resistor.
I Receive Clock Edge - Hardware mode
Set this pin “High” to sample RPOS_N/RNEG_n on the falling edge of
RCLK_n. With this pin tied “Low”, output data are updated on the rising edge
of RCLK_n.
Microprocessor Type Select Input pin 1 - Host mode
This pin along with µPTS2 (pin 128) is used to select the microprocessor
type. See “Microprocessor Type Select Input Pins - Host Mode:” on page 12.
NOTE: This pin is internally pulled “Low” with a 50kΩ resistor.
SIGNAL NAME
TCLKE
µPTS2
TTIP_0
TTIP_1
TTIP_2
TTIP_3
TTIP_4
TTIP_5
TTIP_6
TTIP_7
TQFP
PIN #
128
128
7
13
144
150
46
40
117
111
BGA
LEAD #
TYPE
DESCRIPTION
L15
I Transmit Clock Edge - Hardware mode
Set this pin “High” to sample transmit input data on the rising edge of
TCLK_n. With this pin tied “Low”, input data are sampled on the falling
edge of TCLK_n.
L15
Microprocessor Type Select Input pin 2 - Host mode
This pin along with µPTS1 (pin 133) selects the microprocessor type. See
“Microprocessor Type Select Input Pins - Host Mode:” on page 12.
NOTE: This pin is internally pulled “Low” with a 50kΩ resistor.
E3
O Transmitter Tip Output for Channel _0
Positive differential transmit output to the line.
G4
Transmitter Tip Output for Channel _1
F17
Transmitter Tip Output for Channel _2
C16
Transmitter Tip Output for Channel _3
R2
Transmitter Tip Output for Channel _4
N2
Transmitter Tip Output for Channel _5
N16
Transmitter Tip Output for Channel _6
P16
Transmitter Tip Output for Channel _7
7