ST70137 STMicroelectronics, ST70137 Datasheet - Page 12

• Manufacturer Part Number: ST70137
• Manufacturer: STMicroelectronics

Specifications of ST70137

• Screening Level: Commercial
• Lead Free Status / Rohs Status: Not Compliant

PIN DESCRIPTION (continued)
CLOCK & RESET INTERFACE
MCLK
RSTN
AFE INTERFACE
AFETXD[3:0]
AFERXD[3:0]
CLWD
CTRLDOUT
AFESEL
AFERST
AFEWR / GPIO[ 5]
CTRLDIN / GPIO[4]
SUSPEND
SUSPENDN
PWDN
LDPWDN
Signal Name
Direction Init Status
I/O
O
O
O
O
O
O
O
I
I
I
I
I
I
H
H
H
H
L
L
L
I
I
I
I
I
I
I
Polarity
L/-
L/-
H
H
H
H
L
L
L
L
-
-
-
-
35.328 MHz Master Input Clock.
Asynchronous
USB_PCI_SEL = ‘1’).
AFE Transmit Data Nibble Bus
The signal changes are synchronized to the rising edge of
MCLK clock signal.
AFE Receive Data Nibble Bus
The signal changes are synchronized to the rising edge of
MCLK clock signal.
Start of word indication
This signal is the word clock used to enable shift of data.
It occurs on CTRLDOUT signal to indicate the first data of
the nibble sequence. The CLWD frequency is equal to
MCLK/4.
Transmit Control Word Data to AFE
The data is shifted out from internal register on the rising
edge of MCLK during CLWD assertion.
Select ST-70136 [0] or ADSL_C [1].
AFE Reset
This
(USB_PCIN_SEL
(USB_PCIN_SEL = [1]) if AFESEL = [0], or to the Sachem
GPOUT register if AFESEL = [1]. Not usable in USB
mode.
AFE Write control output signal (AFESEL = 0), or Gen-
eral Purpose I/O pin. The selection is performed writing
the proper bit in the PCFW or UCFW (depending on sta-
tus of USB_PCIN_SEL pin) registers. At the power-on or
hardware reset the GPIO[5] function is selected.
Receive Control word data from AFE (AFESEL = 0), or
General Purpose I/O pin. The selection is performed writ-
ing the proper bit in the PCFW or UCFW (depending on
status of USB_PCIN_SEL pin) registers. At the power-on
or hardware reset the GPIO[4] function is selected ACTD I
I H Activation Tone Detect [1] (or Wake Up signal).
When PCI IF has been selected, the Low to High transi-
tion of ACTD asserts the PCI_PMEN signal (if this last
has been enabled) and generates an interrupt event.
When USB IF has been selected, the Low to High transi-
tion of ACTD de-asserts the SUSPEND signal and
re-enable the internal ST70137 activity.
Suspend Mode Indication.
Suspend Mode Indication Negated.
AFE Power Down.
Line Driver Power Down [1].
signal
is connected
Master
Signal Description
=
[0])
Input
to the
or
Reset
UCFW
internal
(active
ST70137
registers
PCFW
12/22
if