I5216 Datasheet, PDF (70/83 Pages) Winbond – 8 TO 16 MINUTE VOICE RECORD/PLAYBACK SYSTEM WITH INTEGRATED CODEC

I5216 SERIES
Advanced Information
PRELIMINARY
SYSTEM CONFIGURATION
A device generating a message is a ‘transmitter’; a device receiving a message is the ‘receiver’. The
device that controls the message is the ‘master’ and the devices that are controlled by the master are
the ‘slaves’.
ACKNOWLEDGE
The number of data bytes transferred between the start and stop conditions from transmitter to
receiver is unlimited. Each byte of eight bits is followed by an acknowledge bit. The acknowledge bit is
a HIGH level signal put on the interface bus by the transmitter during which time the master generates
an extra acknowledge related clock pulse. A slave receiver which is addressed must generate an
acknowledge after the reception of each byte. In addition, a master receiver must generate an
acknowledge after the reception of each byte that has been clocked out of the slave transmitter.
The device that acknowledges must pull down the SDA line during the acknowledge clock pulse so
that the SDA line is stable LOW during the HIGH period of the acknowledge related clock pulse (set-
up and hold times must be taken into consideration). A master receiver must signal an end of data to
the transmitter by not generating an acknowledge on the last byte that has been clocked out of the
slave. In this event, the transmitter must leave the data line HIGH to enable the master to generate a
stop condition.
MICRO -
CONTROLLER
LCD
DRIVER
STATIC
RAM OR
EEPROM
SDA
SCL
GATE
ARRAY
ISD 5116
MBC645
Example of an I²C-bus configuration using two microcontrollers
Data output by
BY^traTDⁿRA^sA^mTNAittS^{eOMrUITTPTEURT}
Data output by
re^DBc^Ae_Yi^Tv_RAer_{EOCUETIVPEURT}
SCL from Master
SCL FROM
MASTER
S
S_cSota^Tnrt_dAc_iRto_ion^Td_nition
Not _na_ock_tn_ao_cw_klw_ne_od_wg_le_edge
Not ackn^ao^cw^klⁿw^oed^wg^le^edge
7¹
2²
8⁸
9⁹
A^Ack^cn^koⁿw^ole^wd^lg^ee^dgo^en t^ohⁿe ^tI^2hC^e-b^I2u^Cs^-bus
C^cl^lo^oc^ck^kp^pul^us^le^sefor^for
ac_ak_ckn_no_ow_wl_le_edd_gg_ee_mm_ee_ntnt
MBC602
Publication Release Date: November 30, 2001
- 70
Revision A1