XRT83SL28ES Exar, XRT83SL28ES Datasheet - Page 33

• Manufacturer Part Number: XRT83SL28ES
• Description: Peripheral Drivers & Components - PCIs 8 CH E1 LIU SH
• Manufacturer: Exar

Specifications of XRT83SL28ES

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes

xr
REV. 1.0.0
The serial microprocessor uses a standard 3-pin serial port with CS, SCLK, and SDI for programming the LIU.
Optional pins such as SDO, INT, and RESET allow the ability to read back contents of the registers, monitor
the LIU via an interrupt pin, and reset the LIU to its default configuration by pulling reset "Low" for more than
10µS. A simplified block diagram of the Serial Microprocessor is shown in Figure 26.
F
The serial port requires 16 bits of data applied to the SDI (Serial Data Input) pin. The Serial Microprocessor
samples SDI on the rising edge of SCLK (Serial Clock Input). The data is not latched into the device until all 16
bits of serial data have been sampled. A timing diagram of the Serial Microprocessor is shown in Figure 27.
F
4.0 SERIAL MICROPROCESSOR INTERFACE BLOCK
4.1
IGURE
IGURE
26. S
27. T
Serial Timing Information
SCLK
SDO
SDI
CS
IMING
IMPLIFIED
D
HW/Host
IAGRAM FOR THE
25nS
B
SCLK
R/W
LOCK
SDI
1
CS
A0
2
D
IAGRAM OF THE
A1
3
50nS
High-Z
A2
S
4
ERIAL
A3
RESET
5
Microprocessor
M
A4
ICROPROCESSOR
6
S
Interface
ERIAL
A5
Serial
7
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
31
X
M
8
ICROPROCESSOR
D0
D0
9
D1
D1
I
NTERFACE
10
D2
D2
11
D3
D3
12
I
NTERFACE
D4
D4
13
SDO
INT
D5
D5
14
D6
D6
15
D7
D7
16
High-Z
XRT83SL28