st5080d STMicroelectronics, st5080d Datasheet - Page 6

• Manufacturer Part Number: st5080d
• Description: Piafe Programmable Isdn Audio Front End
• Manufacturer: STMicroelectronics

ST5080A
Following pin definitions are used only when COMBO I/II mode with separate MICROWIRE com-
patible serial control port is selected. (MS input set equal one)
PIN FUNCTIONS (continued)
Following pin definitions are used only when the GCI mode is selected. (MS input set equal zero)
PIN FUNCTIONS (continued)
6/32
19,13,12,20
Pin
Pin
12
13
19
20
A0,A1,A2,A3
Name
Name
CCLK
CS-
CO
CI
Control data Output: Serial control/status information is shifted
out from the PIAFE on this pin when CS- is low on the falling
odges of CCLK.
Control data Input: Serial Control information is shifted into the
PIAFE on this pin when CS- is low on the rising edges of CCLK.
Control Clock input: This clock shifts serial control information
into CI and out from CO when the CS- input is low, depending
on the current instruction. CCLK may be asynchronous with the
other system clocks.
Chip Select input: When this pin is low, control information is
written into and out from the PIAFE via CI and CO pins.
These pins select the address of PIAFE on GCI interface and
must be hardwired to either V
C4,C5,C6,C7 bits of the first address byte respectively.
Description
Description
CC
or GND. A0,A1,A2,A3 refer to