h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 476

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 16 Synchronous Serial Communication Unit (SSU)
16.4.3
The connection between data I/O pins and the shift register (SSTRSR) depends on the
combination of the MSS and BIDE bits in SSCRH. Figure 16.3 shows the connection.
The SSU transmits serial data from the SSO pin and receives serial data from the SSI pin when
operating with BIDE
transmits serial data from the SSI pin and receives serial data from the SSO pin when operating
with BIDE 0 and MSS 0 (standard, slave mode) (see figure 16.3 (2)).
The SSU transmits and receives serial data from the SSO pin regardless of master or slave mode
when operating with BIDE
However, even if both the TE and RE bits are set to 1, transmission and reception are not
performed simultaneously. Either the TE or RE bit must be selected.
Rev. 3.00 Oct 04, 2005 page 436 of 598
REJ09B0155-0300
(1) When BIDE = 0 (standard mode), MSS = 1, TE = 1, and RE = 1
(3) When BIDE = 1 (bidirectional mode), MSS = 1, and TE or RE = 1 (4) When BIDE=1 (bidirectional mode), MSS = 0, and TE or RE = 1
Shift register
Shift register
Relationship between Data I/O Pins and the Shift Register
(SSTRSR)
(SSTRSR)
Figure 16.3 Relationship between Data I/O Pins and the Shift Register
0 and MSS 1 (standard, master mode) (see figure 16.3 (1)). The SSU
1 (bidirectional mode) (see figure 16.3 (3) and (4)).
SSCK
SSO
SSI
SSCK
SSO
SSI
(2) When BIDE = 0 (standard mode), MSS = 0, TE = 1, and RE = 1
Shift register
Shift register
(SSTRSR)
(SSTRSR)
SSCK
SSO
SSI
SSCK
SSO
SSI